./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.16.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.16.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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 59f77c8e05911b32b52175a230b989da0fe83a06 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:52:59,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:52:59,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:52:59,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:52:59,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:52:59,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:52:59,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:52:59,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:52:59,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:52:59,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:52:59,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:52:59,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:52:59,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:52:59,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:52:59,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:52:59,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:52:59,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:52:59,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:52:59,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:52:59,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:52:59,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:52:59,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:52:59,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:52:59,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:52:59,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:52:59,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:52:59,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:52:59,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:52:59,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:52:59,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:52:59,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:52:59,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:52:59,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:52:59,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:52:59,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:52:59,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:52:59,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:52:59,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:52:59,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:52:59,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:52:59,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:52:59,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 15:53:00,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:53:00,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:53:00,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:53:00,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:53:00,012 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:53:00,013 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 15:53:00,013 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 15:53:00,013 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 15:53:00,013 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 15:53:00,014 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 15:53:00,015 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 15:53:00,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:53:00,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:53:00,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:53:00,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:53:00,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 15:53:00,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 15:53:00,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 15:53:00,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:53:00,018 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 15:53:00,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:53:00,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 15:53:00,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:53:00,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:53:00,019 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 15:53:00,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:53:00,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:53:00,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:53:00,020 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 15:53:00,023 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 15:53:00,023 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_bad2a266-2924-43b5-bf91-e5990013c08e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59f77c8e05911b32b52175a230b989da0fe83a06 [2020-12-01 15:53:00,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:53:00,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:53:00,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:53:00,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:53:00,383 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:53:00,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.16.c [2020-12-01 15:53:00,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/data/4ff3a7a5a/d03f9f3fc0144e08a3f0197bc84d39d7/FLAG074957e76 [2020-12-01 15:53:00,897 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:53:00,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/sv-benchmarks/c/termination-restricted-15/b.16.c [2020-12-01 15:53:00,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/data/4ff3a7a5a/d03f9f3fc0144e08a3f0197bc84d39d7/FLAG074957e76 [2020-12-01 15:53:01,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/bin/uautomizer/data/4ff3a7a5a/d03f9f3fc0144e08a3f0197bc84d39d7 [2020-12-01 15:53:01,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:53:01,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:53:01,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:53:01,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:53:01,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:53:01,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54153649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01, skipping insertion in model container [2020-12-01 15:53:01,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:53:01,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:53:01,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:53:01,518 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:53:01,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:53:01,548 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:53:01,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01 WrapperNode [2020-12-01 15:53:01,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:53:01,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:53:01,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:53:01,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:53:01,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:53:01,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:53:01,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:53:01,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:53:01,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... [2020-12-01 15:53:01,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:53:01,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:53:01,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:53:01,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:53:01,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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 [2020-12-01 15:53:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:53:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:53:01,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:53:01,833 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 15:53:01,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:01 BoogieIcfgContainer [2020-12-01 15:53:01,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:53:01,837 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 15:53:01,837 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 15:53:01,841 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 15:53:01,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:53:01,842 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 03:53:01" (1/3) ... [2020-12-01 15:53:01,843 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@728c4636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:53:01, skipping insertion in model container [2020-12-01 15:53:01,843 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:53:01,844 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:01" (2/3) ... [2020-12-01 15:53:01,844 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@728c4636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:53:01, skipping insertion in model container [2020-12-01 15:53:01,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:53:01,844 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:01" (3/3) ... [2020-12-01 15:53:01,846 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.16.c [2020-12-01 15:53:01,908 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 15:53:01,909 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 15:53:01,909 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 15:53:01,909 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:53:01,909 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:53:01,909 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 15:53:01,910 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:53:01,910 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 15:53:01,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-12-01 15:53:01,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:53:01,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:53:01,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:53:01,954 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:53:01,954 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:53:01,954 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 15:53:01,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-12-01 15:53:01,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:53:01,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:53:01,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:53:01,956 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:53:01,956 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:53:01,963 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~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;main_~c~0 := 0; 9#L11-2true [2020-12-01 15:53:01,963 INFO L796 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~x~0 > 0); 3#L12-2true assume !(main_~y~0 > 0); 10#L12-3true main_~x~0 := main_~x~0 - 1; 9#L11-2true [2020-12-01 15:53:01,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:01,970 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-12-01 15:53:01,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:01,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987113566] [2020-12-01 15:53:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:02,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:02,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:02,098 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:02,105 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-12-01 15:53:02,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:02,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595150801] [2020-12-01 15:53:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:02,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:02,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:02,143 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-12-01 15:53:02,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:02,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408561684] [2020-12-01 15:53:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:02,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:02,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:02,177 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:02,262 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:53:02,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:53:02,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:53:02,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:53:02,263 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:53:02,264 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:02,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:53:02,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:53:02,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2020-12-01 15:53:02,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:53:02,265 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:53:02,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,498 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:53:02,499 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:02,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:53:02,513 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 [2020-12-01 15:53:02,545 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:53:02,545 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_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:02,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:53:02,588 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 [2020-12-01 15:53:02,609 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:53:02,610 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_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:02,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:53:02,650 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_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:02,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:53:02,704 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 [2020-12-01 15:53:02,761 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:53:02,764 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:53:02,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:53:02,764 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:53:02,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:53:02,764 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:53:02,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:02,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:53:02,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:53:02,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2020-12-01 15:53:02,766 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:53:02,766 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:53:02,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:02,920 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:53:02,925 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:02,937 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 [2020-12-01 15:53:02,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:53:02,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:53:02,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:53:02,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:53:02,955 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:53:02,955 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:02,970 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:03,011 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 [2020-12-01 15:53:03,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:53:03,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:53:03,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:53:03,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:53:03,018 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:53:03,018 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 [2020-12-01 15:53:03,033 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,056 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 [2020-12-01 15:53:03,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:53:03,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:53:03,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:53:03,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:53:03,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:53:03,061 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:53:03,061 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:53:03,078 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:53:03,085 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 15:53:03,085 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:03,093 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:53:03,093 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:53:03,093 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:53:03,094 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,131 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:53:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:03,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:53:03,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:03,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:53:03,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:03,204 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 [2020-12-01 15:53:03,205 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-12-01 15:53:03,247 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-12-01 15:53:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-12-01 15:53:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:53:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-12-01 15:53:03,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-12-01 15:53:03,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:53:03,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-12-01 15:53:03,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:53:03,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-12-01 15:53:03,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:53:03,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-12-01 15:53:03,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-12-01 15:53:03,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-12-01 15:53:03,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-12-01 15:53:03,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-12-01 15:53:03,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-12-01 15:53:03,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 15:53:03,263 INFO L692 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-12-01 15:53:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-12-01 15:53:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-12-01 15:53:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-12-01 15:53:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-12-01 15:53:03,288 INFO L715 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-12-01 15:53:03,289 INFO L595 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-12-01 15:53:03,289 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 15:53:03,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-12-01 15:53:03,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-12-01 15:53:03,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:53:03,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:53:03,290 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-12-01 15:53:03,290 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-12-01 15:53:03,291 INFO L794 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~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;main_~c~0 := 0; 74#L11-2 assume !!(main_~x~0 > 0); 70#L12-2 [2020-12-01 15:53:03,291 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~y~0 > 0);main_~y~0 := main_~y~0 - 1; 70#L12-2 [2020-12-01 15:53:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-12-01 15:53:03,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:03,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836749740] [2020-12-01 15:53:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:03,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:03,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:03,301 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-12-01 15:53:03,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:03,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497754140] [2020-12-01 15:53:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:03,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:03,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:03,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-12-01 15:53:03,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:03,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778905792] [2020-12-01 15:53:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:03,338 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:53:03,343 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:53:03,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:53:03,365 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:53:03,366 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:53:03,366 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:53:03,367 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:53:03,367 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:53:03,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:53:03,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:53:03,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2020-12-01 15:53:03,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:53:03,370 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:53:03,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:03,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:03,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:03,459 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:53:03,459 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:53:03,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:53:03,518 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:53:03,518 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_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:03,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:53:03,561 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 [2020-12-01 15:53:03,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:53:03,573 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_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:03,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:53:03,613 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) [2020-12-01 15:53:03,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:53:03,666 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,709 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:53:03,711 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:53:03,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:53:03,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:53:03,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:53:03,711 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:53:03,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:53:03,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:53:03,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2020-12-01 15:53:03,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:53:03,712 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:53:03,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:03,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:03,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:53:03,792 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:53:03,792 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,795 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 [2020-12-01 15:53:03,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:53:03,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:53:03,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:53:03,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:53:03,811 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:53:03,811 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:53:03,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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 [2020-12-01 15:53:03,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-12-01 15:53:03,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:53:03,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:53:03,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:53:03,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:53:03,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:53:03,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:53:03,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:53:03,878 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:53:03,881 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-12-01 15:53:03,881 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bad2a266-2924-43b5-bf91-e5990013c08e/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:53:03,883 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:53:03,884 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:53:03,884 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:53:03,884 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-12-01 15:53:03,903 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:53:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:03,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:53:03,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:03,943 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:53:03,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:53:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:03,946 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 [2020-12-01 15:53:03,946 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-12-01 15:53:03,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2020-12-01 15:53:03,965 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 [2020-12-01 15:53:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-12-01 15:53:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-12-01 15:53:03,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2020-12-01 15:53:03,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:53:03,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2020-12-01 15:53:03,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:53:03,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-12-01 15:53:03,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:53:03,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-12-01 15:53:03,969 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:53:03,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-12-01 15:53:03,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 15:53:03,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 15:53:03,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 15:53:03,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:53:03,969 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:53:03,969 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:53:03,970 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:53:03,970 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-12-01 15:53:03,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:53:03,970 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:53:03,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 15:53:03,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 03:53:03 BoogieIcfgContainer [2020-12-01 15:53:03,976 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 15:53:03,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:53:03,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:53:03,978 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:53:03,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:01" (3/4) ... [2020-12-01 15:53:03,982 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:53:03,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:53:03,986 INFO L168 Benchmark]: Toolchain (without parser) took 2668.37 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 70.7 MB in the beginning and 52.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:03,989 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 96.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:53:03,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.60 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 70.4 MB in the beginning and 108.9 MB in the end (delta: -38.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:03,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.44 ms. Allocated memory is still 130.0 MB. Free memory was 108.9 MB in the beginning and 107.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:53:03,999 INFO L168 Benchmark]: Boogie Preprocessor took 18.03 ms. Allocated memory is still 130.0 MB. Free memory was 107.8 MB in the beginning and 106.8 MB in the end (delta: 992.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:53:03,999 INFO L168 Benchmark]: RCFGBuilder took 234.77 ms. Allocated memory is still 130.0 MB. Free memory was 106.8 MB in the beginning and 98.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:04,000 INFO L168 Benchmark]: BuchiAutomizer took 2138.99 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 52.4 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:53:04,001 INFO L168 Benchmark]: Witness Printer took 5.74 ms. Allocated memory is still 130.0 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:53:04,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 96.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.60 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 70.4 MB in the beginning and 108.9 MB in the end (delta: -38.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.44 ms. Allocated memory is still 130.0 MB. Free memory was 108.9 MB in the beginning and 107.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.03 ms. Allocated memory is still 130.0 MB. Free memory was 107.8 MB in the beginning and 106.8 MB in the end (delta: 992.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.77 ms. Allocated memory is still 130.0 MB. Free memory was 106.8 MB in the beginning and 98.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2138.99 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 52.4 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.74 ms. Allocated memory is still 130.0 MB. Free memory is still 52.4 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 10 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax206 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...