./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.15.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer --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 28b8f223b97939bdb3ffe1e6bb25bd5d633f35c4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:35:31,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:35:31,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:35:31,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:35:31,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:35:31,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:35:31,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:35:31,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:35:31,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:35:31,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:35:31,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:35:31,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:35:31,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:35:31,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:35:31,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:35:31,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:35:31,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:35:31,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:35:31,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:35:31,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:35:31,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:35:31,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:35:31,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:35:31,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:35:31,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:35:31,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:35:31,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:35:31,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:35:31,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:35:31,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:35:31,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:35:31,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:35:31,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:35:31,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:35:31,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:35:31,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:35:31,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:35:31,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:35:31,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:35:31,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:35:31,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:35:31,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:35:31,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:35:31,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:35:31,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:35:31,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:35:31,553 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:35:31,553 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:35:31,553 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:35:31,554 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:35:31,554 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:35:31,554 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:35:31,554 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:35:31,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:35:31,555 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:35:31,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:35:31,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:35:31,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:35:31,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:35:31,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:35:31,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:35:31,557 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:35:31,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:35:31,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:35:31,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:35:31,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:35:31,558 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:35:31,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:35:31,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:35:31,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:35:31,559 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:35:31,560 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:35:31,561 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:/tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b8f223b97939bdb3ffe1e6bb25bd5d633f35c4 [2020-11-30 00:35:31,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:35:31,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:35:31,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:35:31,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:35:31,913 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:35:31,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.15.c [2020-11-30 00:35:32,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/data/b1a275fdb/54c5f0416cce46f6bdcf536f96846e79/FLAG49aa0bf2f [2020-11-30 00:35:32,574 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:35:32,575 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/sv-benchmarks/c/termination-restricted-15/b.15.c [2020-11-30 00:35:32,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/data/b1a275fdb/54c5f0416cce46f6bdcf536f96846e79/FLAG49aa0bf2f [2020-11-30 00:35:32,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/data/b1a275fdb/54c5f0416cce46f6bdcf536f96846e79 [2020-11-30 00:35:32,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:35:32,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:35:32,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:32,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:35:32,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:35:32,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:32" (1/1) ... [2020-11-30 00:35:32,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f497531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:32, skipping insertion in model container [2020-11-30 00:35:32,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:32" (1/1) ... [2020-11-30 00:35:32,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:35:32,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:35:33,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:33,161 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:35:33,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:33,203 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:35:33,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33 WrapperNode [2020-11-30 00:35:33,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:33,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:33,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:35:33,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:35:33,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:33,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:35:33,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:35:33,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:35:33,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... [2020-11-30 00:35:33,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:35:33,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:35:33,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:35:33,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:35:33,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/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 [2020-11-30 00:35:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:35:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:35:33,597 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:35:33,598 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:35:33,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:33 BoogieIcfgContainer [2020-11-30 00:35:33,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:35:33,602 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:35:33,603 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:35:33,608 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:35:33,609 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:35:33,609 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:35:32" (1/3) ... [2020-11-30 00:35:33,611 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50e39660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:35:33, skipping insertion in model container [2020-11-30 00:35:33,611 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:35:33,612 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:33" (2/3) ... [2020-11-30 00:35:33,612 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50e39660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:35:33, skipping insertion in model container [2020-11-30 00:35:33,613 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:35:33,613 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:33" (3/3) ... [2020-11-30 00:35:33,615 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.15.c [2020-11-30 00:35:33,723 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:35:33,724 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:35:33,724 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:35:33,724 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:35:33,724 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:35:33,724 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:35:33,725 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:35:33,725 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:35:33,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-30 00:35:33,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:35:33,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:33,765 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:33,772 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:35:33,772 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:35:33,773 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:35:33,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-30 00:35:33,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:35:33,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:33,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:33,776 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:35:33,776 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:35:33,785 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 3#L13-3true [2020-11-30 00:35:33,785 INFO L796 eck$LassoCheckResult]: Loop: 3#L13-3true assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 6#L13-2true assume !(main_~y~0 > main_~z~0); 3#L13-3true [2020-11-30 00:35:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:33,801 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 00:35:33,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:33,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673029080] [2020-11-30 00:35:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:33,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:33,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:33,923 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1288, now seen corresponding path program 1 times [2020-11-30 00:35:33,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:33,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617466248] [2020-11-30 00:35:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:34,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617466248] [2020-11-30 00:35:34,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:34,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:35:34,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10523067] [2020-11-30 00:35:34,016 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:35:34,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:35:34,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:35:34,045 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-11-30 00:35:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:34,157 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-11-30 00:35:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:35:34,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-11-30 00:35:34,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:35:34,165 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 4 states and 5 transitions. [2020-11-30 00:35:34,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-30 00:35:34,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-30 00:35:34,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 5 transitions. [2020-11-30 00:35:34,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:35:34,169 INFO L691 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-11-30 00:35:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 5 transitions. [2020-11-30 00:35:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2020-11-30 00:35:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:35:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-11-30 00:35:34,236 INFO L714 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-11-30 00:35:34,236 INFO L594 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-11-30 00:35:34,236 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:35:34,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2020-11-30 00:35:34,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:35:34,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:34,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:34,238 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:35:34,238 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:35:34,238 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 24#L13-3 [2020-11-30 00:35:34,238 INFO L796 eck$LassoCheckResult]: Loop: 24#L13-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 25#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 27#L13-2 assume !(main_~y~0 > main_~z~0); 24#L13-3 [2020-11-30 00:35:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:34,239 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-30 00:35:34,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:34,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898841418] [2020-11-30 00:35:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:34,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:34,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:34,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:34,269 INFO L82 PathProgramCache]: Analyzing trace with hash 40007, now seen corresponding path program 1 times [2020-11-30 00:35:34,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:34,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445504154] [2020-11-30 00:35:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:34,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:34,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:34,313 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2020-11-30 00:35:34,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:34,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250686159] [2020-11-30 00:35:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:34,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:34,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:34,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:34,471 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:35:34,471 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:35:34,472 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:35:34,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:35:34,472 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:35:34,473 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:34,473 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:35:34,473 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:35:34,473 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2020-11-30 00:35:34,473 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:35:34,474 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:35:34,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:34,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:34,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:34,655 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:35:34,656 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:34,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:34,667 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:34,678 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:35:34,678 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 /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:34,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:34,728 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 [2020-11-30 00:35:34,733 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:35:34,733 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 /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:34,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:34,783 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 /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:34,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:35:34,838 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:35,300 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:35:35,310 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:35:35,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:35:35,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:35:35,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:35:35,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:35:35,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:35,311 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:35:35,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:35:35,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2020-11-30 00:35:35,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:35:35,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:35:35,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:35,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:35,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:35,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:35:35,479 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:35,485 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 [2020-11-30 00:35:35,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:35,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:35,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:35,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:35,497 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:35:35,497 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:35:35,504 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:35,563 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 [2020-11-30 00:35:35,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:35,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:35,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:35,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:35:35,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:35:35,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:35,579 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:35,631 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 [2020-11-30 00:35:35,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:35,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:35:35,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:35,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:35,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:35:35,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:35:35,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:35,645 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:35:35,653 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 00:35:35,654 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:35,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:35:35,661 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:35:35,661 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:35:35,662 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:35,709 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:35:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:35,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:35:35,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:35,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:35:35,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:35,927 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 [2020-11-30 00:35:35,928 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-11-30 00:35:35,982 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2020-11-30 00:35:35,984 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 [2020-11-30 00:35:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:35:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-30 00:35:35,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-30 00:35:35,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:35:35,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:35:35,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:35:35,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-30 00:35:35,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:35:35,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2020-11-30 00:35:35,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:35:35,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 11 transitions. [2020-11-30 00:35:35,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-30 00:35:35,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-30 00:35:35,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-30 00:35:35,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:35:35,996 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 00:35:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-30 00:35:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-30 00:35:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:35:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-30 00:35:36,003 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 00:35:36,003 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 00:35:36,003 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:35:36,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-30 00:35:36,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:35:36,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:36,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:36,008 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-11-30 00:35:36,008 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:35:36,008 INFO L794 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 76#L13-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 77#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 81#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 80#L13-2 [2020-11-30 00:35:36,009 INFO L796 eck$LassoCheckResult]: Loop: 80#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 80#L13-2 [2020-11-30 00:35:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 1 times [2020-11-30 00:35:36,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:36,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180763362] [2020-11-30 00:35:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:36,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:36,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:36,073 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-30 00:35:36,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:36,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883349708] [2020-11-30 00:35:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:36,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:36,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:36,088 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:36,089 INFO L82 PathProgramCache]: Analyzing trace with hash 29869449, now seen corresponding path program 2 times [2020-11-30 00:35:36,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:36,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203512120] [2020-11-30 00:35:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:36,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:36,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:36,116 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:36,135 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:35:36,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:35:36,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:35:36,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:35:36,136 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:35:36,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:36,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:35:36,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:35:36,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration3_Loop [2020-11-30 00:35:36,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:35:36,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:35:36,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,244 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:35:36,244 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:36,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:36,255 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 [2020-11-30 00:35:36,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:35:36,261 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 /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:36,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:36,316 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 /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:36,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:35:36,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:35:36,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:35:36,390 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-3}, {ULTIMATE.start_main_~x~0=7}, {ULTIMATE.start_main_~x~0=-5}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/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 [2020-11-30 00:35:36,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:36,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:35:36,449 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:35:36,449 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 /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:36,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:35:36,503 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/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 [2020-11-30 00:35:36,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:35:36,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:35:36,770 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:35:36,772 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:35:36,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:35:36,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:35:36,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:35:36,773 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:35:36,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:36,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:35:36,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:35:36,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration3_Loop [2020-11-30 00:35:36,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:35:36,774 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:35:36,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:35:36,891 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:35:36,892 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:35:36,904 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 [2020-11-30 00:35:36,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:36,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:36,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:36,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:35:36,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:35:36,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:36,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:36,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:35:36,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:36,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:35:36,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:36,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:36,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:35:36,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:35:36,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:35:36,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:35:37,008 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 [2020-11-30 00:35:37,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:37,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:37,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:37,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:35:37,023 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:35:37,023 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:35:37,032 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/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 [2020-11-30 00:35:37,067 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 [2020-11-30 00:35:37,070 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:35:37,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:35:37,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:35:37,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:35:37,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:35:37,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:35:37,073 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:35:37,097 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:35:37,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:35:37,120 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4b6e5e5-91af-4aba-840a-d8839bdcef85/bin/uautomizer/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 [2020-11-30 00:35:37,198 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:35:37,199 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:35:37,199 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:35:37,199 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-11-30 00:35:37,252 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:35:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:37,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:35:37,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:37,292 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:35:37,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:37,293 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 [2020-11-30 00:35:37,294 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-30 00:35:37,307 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 4 states. [2020-11-30 00:35:37,308 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 [2020-11-30 00:35:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 00:35:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-30 00:35:37,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-30 00:35:37,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:35:37,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-30 00:35:37,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:35:37,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-30 00:35:37,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:35:37,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2020-11-30 00:35:37,311 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:35:37,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-11-30 00:35:37,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:35:37,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:35:37,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:35:37,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:35:37,313 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:35:37,313 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:35:37,313 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:35:37,313 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:35:37,313 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:35:37,313 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:35:37,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:35:37,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:35:37 BoogieIcfgContainer [2020-11-30 00:35:37,320 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:35:37,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:35:37,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:35:37,322 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:35:37,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:33" (3/4) ... [2020-11-30 00:35:37,326 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:35:37,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:35:37,328 INFO L168 Benchmark]: Toolchain (without parser) took 4373.01 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 91.4 MB in the beginning and 105.7 MB in the end (delta: -14.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:37,329 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:37,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.43 ms. Allocated memory is still 121.6 MB. Free memory was 91.1 MB in the beginning and 98.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:37,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.48 ms. Allocated memory is still 121.6 MB. Free memory was 98.9 MB in the beginning and 97.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:37,331 INFO L168 Benchmark]: Boogie Preprocessor took 36.25 ms. Allocated memory is still 121.6 MB. Free memory was 97.6 MB in the beginning and 96.8 MB in the end (delta: 784.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:37,332 INFO L168 Benchmark]: RCFGBuilder took 302.75 ms. Allocated memory is still 121.6 MB. Free memory was 96.8 MB in the beginning and 88.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:37,333 INFO L168 Benchmark]: BuchiAutomizer took 3718.06 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 88.4 MB in the beginning and 105.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:37,334 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 146.8 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:37,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.43 ms. Allocated memory is still 121.6 MB. Free memory was 91.1 MB in the beginning and 98.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.48 ms. Allocated memory is still 121.6 MB. Free memory was 98.9 MB in the beginning and 97.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.25 ms. Allocated memory is still 121.6 MB. Free memory was 97.6 MB in the beginning and 96.8 MB in the end (delta: 784.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 302.75 ms. Allocated memory is still 121.6 MB. Free memory was 96.8 MB in the beginning and 88.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3718.06 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 88.4 MB in the beginning and 105.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.15 ms. Allocated memory is still 146.8 MB. Free memory is still 105.7 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 3 SDs, 0 SdLazy, 18 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax167 hnf98 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf92 smp92 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...