./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.13.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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.13.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 15:22:49,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:22:49,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:22:50,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:22:50,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:22:50,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:22:50,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:22:50,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:22:50,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:22:50,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:22:50,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:22:50,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:22:50,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:22:50,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:22:50,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:22:50,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:22:50,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:22:50,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:22:50,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:22:50,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:22:50,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:22:50,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:22:50,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:22:50,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:22:50,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:22:50,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:22:50,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:22:50,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:22:50,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:22:50,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:22:50,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:22:50,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:22:50,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:22:50,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:22:50,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:22:50,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:22:50,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:22:50,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:22:50,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:22:50,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:22:50,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:22:50,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 15:22:50,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:22:50,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:22:50,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:22:50,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:22:50,176 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:22:50,176 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 15:22:50,176 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 15:22:50,177 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 15:22:50,177 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 15:22:50,177 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 15:22:50,179 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 15:22:50,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:22:50,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:22:50,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:22:50,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:22:50,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 15:22:50,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 15:22:50,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 15:22:50,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:22:50,182 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 15:22:50,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:22:50,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 15:22:50,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:22:50,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:22:50,184 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 15:22:50,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:22:50,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:22:50,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:22:50,185 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 15:22:50,187 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 15:22:50,187 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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2020-12-01 15:22:50,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:22:50,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:22:50,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:22:50,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:22:50,603 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:22:50,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.13.c [2020-12-01 15:22:50,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/data/4edd19e73/9c8d89ed09384382bd8e15852f66031e/FLAG2fbbc0664 [2020-12-01 15:22:51,212 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:22:51,213 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/sv-benchmarks/c/termination-restricted-15/b.13.c [2020-12-01 15:22:51,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/data/4edd19e73/9c8d89ed09384382bd8e15852f66031e/FLAG2fbbc0664 [2020-12-01 15:22:51,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/bin/uautomizer/data/4edd19e73/9c8d89ed09384382bd8e15852f66031e [2020-12-01 15:22:51,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:22:51,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:22:51,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:22:51,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:22:51,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:22:51,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c25dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51, skipping insertion in model container [2020-12-01 15:22:51,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:22:51,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:22:51,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:22:51,848 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:22:51,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:22:51,880 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:22:51,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51 WrapperNode [2020-12-01 15:22:51,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:22:51,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:22:51,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:22:51,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:22:51,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:22:51,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:22:51,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:22:51,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:22:51,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... [2020-12-01 15:22:51,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:22:51,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:22:51,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:22:51,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:22:51,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:22:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:22:52,273 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:22:52,273 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 15:22:52,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:52 BoogieIcfgContainer [2020-12-01 15:22:52,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:22:52,277 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 15:22:52,277 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 15:22:52,282 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 15:22:52,284 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:22:52,284 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 03:22:51" (1/3) ... [2020-12-01 15:22:52,286 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bf270fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:22:52, skipping insertion in model container [2020-12-01 15:22:52,286 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:22:52,286 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:22:51" (2/3) ... [2020-12-01 15:22:52,287 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bf270fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:22:52, skipping insertion in model container [2020-12-01 15:22:52,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:22:52,287 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:52" (3/3) ... [2020-12-01 15:22:52,289 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.13.c [2020-12-01 15:22:52,401 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 15:22:52,401 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 15:22:52,401 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 15:22:52,401 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:22:52,401 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:22:52,402 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 15:22:52,402 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:22:52,402 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 15:22:52,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-12-01 15:22:52,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:22:52,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:22:52,442 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:22:52,450 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:22:52,450 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:22:52,450 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 15:22:52,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-12-01 15:22:52,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:22:52,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:22:52,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:22:52,453 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 15:22:52,453 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:22:52,462 INFO L794 eck$LassoCheckResult]: Stem: 4#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; 10#L16-2true [2020-12-01 15:22:52,463 INFO L796 eck$LassoCheckResult]: Loop: 10#L16-2true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 8#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 10#L16-2true [2020-12-01 15:22:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:52,478 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-12-01 15:22:52,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:52,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184122982] [2020-12-01 15:22:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:52,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:52,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:52,658 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-12-01 15:22:52,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:52,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761436139] [2020-12-01 15:22:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:52,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:52,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:52,716 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:52,731 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-12-01 15:22:52,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:52,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778674717] [2020-12-01 15:22:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:52,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:52,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:52,767 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:52,936 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:22:52,950 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:22:52,950 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:22:52,950 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:22:52,951 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:22:52,951 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:52,951 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:22:52,951 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:22:52,951 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2020-12-01 15:22:52,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:22:52,952 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:22:52,992 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 15:22:53,035 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 15:22:53,045 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 15:22:53,231 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:22:53,232 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:53,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:22:53,244 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 15:22:53,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:22:53,276 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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:53,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:22:53,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:22:53,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:22:53,336 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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:53,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:22:53,391 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:53,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:22:53,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:22:53,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:22:53,682 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:22:53,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:22:53,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:22:53,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:22:53,683 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:22:53,683 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:53,683 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:22:53,683 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:22:53,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2020-12-01 15:22:53,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:22:53,684 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:22:53,685 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 15:22:53,690 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 15:22:53,694 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 15:22:53,786 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:22:53,793 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:53,805 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 15:22:53,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:22:53,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:22:53,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:22:53,809 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 [2020-12-01 15:22:53,821 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:22:53,821 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:22:53,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:53,882 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 15:22:53,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:22:53,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:22:53,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:22:53,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:22:53,889 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:22:53,890 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:22:53,927 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:53,979 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 15:22:53,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:22:53,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:22:53,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:22:53,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:22:53,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:22:53,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:22:53,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:22:54,012 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:22:54,034 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-12-01 15:22:54,035 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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:54,072 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:22:54,072 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:22:54,073 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:22:54,073 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 [] [2020-12-01 15:22:54,151 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:22:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:54,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:22:54,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:22:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:54,256 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:22:54,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:22:54,260 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 15:22:54,300 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 15:22:54,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-12-01 15:22:54,375 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2020-12-01 15:22:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:22:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:22:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-12-01 15:22:54,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2020-12-01 15:22:54,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:22:54,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-12-01 15:22:54,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:22:54,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2020-12-01 15:22:54,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:22:54,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-12-01 15:22:54,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:22:54,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2020-12-01 15:22:54,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-12-01 15:22:54,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-12-01 15:22:54,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-12-01 15:22:54,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 15:22:54,395 INFO L692 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-12-01 15:22:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-12-01 15:22:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-01 15:22:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-01 15:22:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-12-01 15:22:54,439 INFO L715 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-12-01 15:22:54,439 INFO L595 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-12-01 15:22:54,439 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 15:22:54,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-12-01 15:22:54,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:22:54,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:22:54,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:22:54,441 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-12-01 15:22:54,441 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:22:54,441 INFO L794 eck$LassoCheckResult]: Stem: 63#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; 64#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2020-12-01 15:22:54,442 INFO L796 eck$LassoCheckResult]: Loop: 69#L13 assume !(main_~x~0 > main_~z~0); 65#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 66#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2020-12-01 15:22:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:54,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-12-01 15:22:54,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:54,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147420783] [2020-12-01 15:22:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:54,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:54,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:54,458 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:54,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-12-01 15:22:54,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:54,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833740077] [2020-12-01 15:22:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:54,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:54,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:54,476 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:54,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:54,478 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-12-01 15:22:54,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:54,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889639014] [2020-12-01 15:22:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:54,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:54,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:54,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:54,537 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:22:54,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:22:54,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:22:54,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:22:54,537 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:22:54,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:54,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:22:54,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:22:54,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2020-12-01 15:22:54,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:22:54,539 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:22:54,541 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 15:22:54,545 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 15:22:54,550 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 15:22:54,614 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:22:54,614 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:54,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:22:54,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:22:54,644 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:22:54,644 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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:54,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:22:54,674 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 15:22:54,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-12-01 15:22:54,695 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_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 [2020-12-01 15:22:54,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:22:54,738 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 [2020-12-01 15:22:54,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:22:54,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:22:55,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:22:55,335 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:22:55,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:22:55,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:22:55,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:22:55,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:22:55,335 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:55,335 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:22:55,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:22:55,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2020-12-01 15:22:55,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:22:55,336 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:22:55,338 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 15:22:55,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:22:55,356 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 15:22:55,421 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:22:55,421 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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 15:22:55,444 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 15:22:55,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:22:55,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:22:55,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:22:55,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:22:55,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:22:55,457 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:22:55,475 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) [2020-12-01 15:22:55,532 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 15:22:55,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:22:55,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:22:55,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:22:55,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:22:55,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:22:55,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:22:55,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:55,551 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:22:55,576 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 15:22:55,577 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66688f8b-5703-4b5d-a2a5-a98f8effdf99/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) [2020-12-01 15:22:55,628 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:22:55,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:22:55,629 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:22:55,629 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 [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:22:55,668 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:22:55,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:55,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:22:55,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:22:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:55,714 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:22:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:22:55,845 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 15:22:55,847 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 [2020-12-01 15:22:55,847 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-12-01 15:22:55,908 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2020-12-01 15:22:55,909 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 15:22:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-12-01 15:22:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-12-01 15:22:55,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2020-12-01 15:22:55,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:22:55,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-12-01 15:22:55,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:22:55,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2020-12-01 15:22:55,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:22:55,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2020-12-01 15:22:55,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:22:55,928 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2020-12-01 15:22:55,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-12-01 15:22:55,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-12-01 15:22:55,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2020-12-01 15:22:55,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-12-01 15:22:55,930 INFO L692 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-12-01 15:22:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2020-12-01 15:22:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-12-01 15:22:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:22:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2020-12-01 15:22:55,942 INFO L715 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-12-01 15:22:55,942 INFO L595 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-12-01 15:22:55,943 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-12-01 15:22:55,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2020-12-01 15:22:55,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:22:55,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:22:55,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:22:55,947 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-12-01 15:22:55,947 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:22:55,947 INFO L794 eck$LassoCheckResult]: Stem: 147#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; 148#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 163#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2020-12-01 15:22:55,947 INFO L796 eck$LassoCheckResult]: Loop: 149#L16 assume !(main_~y~0 > main_~z~0); 150#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 157#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2020-12-01 15:22:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-12-01 15:22:55,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:55,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999992617] [2020-12-01 15:22:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:55,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:22:55,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:22:55,963 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:22:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:22:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-12-01 15:22:55,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:22:55,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389775560] [2020-12-01 15:22:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:22:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:22:56,026 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 15:22:56,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389775560] [2020-12-01 15:22:56,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:22:56,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:22:56,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443704552] [2020-12-01 15:22:56,033 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-12-01 15:22:56,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:22:56,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:22:56,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:22:56,038 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-12-01 15:22:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:22:56,077 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-12-01 15:22:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:22:56,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2020-12-01 15:22:56,079 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:22:56,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-12-01 15:22:56,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 15:22:56,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 15:22:56,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 15:22:56,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:22:56,080 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:22:56,080 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:22:56,080 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:22:56,080 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-12-01 15:22:56,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:22:56,081 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:22:56,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 15:22:56,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 03:22:56 BoogieIcfgContainer [2020-12-01 15:22:56,088 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 15:22:56,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:22:56,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:22:56,089 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:22:56,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:22:52" (3/4) ... [2020-12-01 15:22:56,094 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:22:56,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:22:56,096 INFO L168 Benchmark]: Toolchain (without parser) took 4520.71 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 65.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:56,097 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:56,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.46 ms. Allocated memory is still 86.0 MB. Free memory was 53.2 MB in the beginning and 65.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:56,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.25 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 63.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:56,100 INFO L168 Benchmark]: Boogie Preprocessor took 14.67 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 62.5 MB in the end (delta: 883.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:56,101 INFO L168 Benchmark]: RCFGBuilder took 348.75 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 54.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:56,102 INFO L168 Benchmark]: BuchiAutomizer took 3811.29 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 65.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:22:56,103 INFO L168 Benchmark]: Witness Printer took 5.57 ms. Allocated memory is still 104.9 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:22:56,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.46 ms. Allocated memory is still 86.0 MB. Free memory was 53.2 MB in the beginning and 65.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.25 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 63.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.67 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 62.5 MB in the end (delta: 883.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 348.75 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 54.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3811.29 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 65.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.57 ms. Allocated memory is still 104.9 MB. Free memory is still 65.3 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 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax206 hnf100 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...