./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 639f18bc5de28da6eb107c1e55f1eb45909efdef ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:58:23,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:58:23,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:58:23,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:58:23,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:58:23,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:58:23,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:58:23,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:58:23,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:58:23,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:58:23,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:58:23,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:58:23,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:58:23,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:58:23,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:58:23,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:58:23,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:58:23,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:58:23,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:58:23,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:58:23,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:58:23,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:58:23,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:58:23,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:58:23,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:58:23,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:58:23,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:58:23,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:58:23,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:58:23,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:58:23,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:58:23,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:58:23,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:58:23,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:58:23,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:58:23,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:58:23,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:58:23,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:58:23,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:58:23,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:58:23,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:58:23,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:58:23,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:58:23,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:58:23,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:58:23,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:58:23,498 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:58:23,499 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:58:23,499 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:58:23,499 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:58:23,499 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:58:23,500 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:58:23,501 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:58:23,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:58:23,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:58:23,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:58:23,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:58:23,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:58:23,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:58:23,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:58:23,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:58:23,505 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:58:23,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:58:23,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:58:23,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:58:23,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:58:23,506 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:58:23,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:58:23,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:58:23,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:58:23,508 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:58:23,511 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:58:23,511 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_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 639f18bc5de28da6eb107c1e55f1eb45909efdef [2020-11-29 19:58:23,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:58:23,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:58:23,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:58:23,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:58:23,933 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:58:23,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2020-11-29 19:58:24,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/data/ef2ba91ad/54372aa245af4146864c34456926fcd6/FLAGd10a59b86 [2020-11-29 19:58:24,540 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:58:24,541 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/sv-benchmarks/c/termination-numeric/rec_counter3.c [2020-11-29 19:58:24,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/data/ef2ba91ad/54372aa245af4146864c34456926fcd6/FLAGd10a59b86 [2020-11-29 19:58:24,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/data/ef2ba91ad/54372aa245af4146864c34456926fcd6 [2020-11-29 19:58:24,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:58:24,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:58:24,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:58:24,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:58:24,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:58:24,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:58:24" (1/1) ... [2020-11-29 19:58:24,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dcf433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:24, skipping insertion in model container [2020-11-29 19:58:24,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:58:24" (1/1) ... [2020-11-29 19:58:24,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:58:24,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:58:25,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:58:25,141 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:58:25,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:58:25,182 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:58:25,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25 WrapperNode [2020-11-29 19:58:25,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:58:25,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:58:25,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:58:25,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:58:25,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:58:25,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:58:25,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:58:25,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:58:25,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... [2020-11-29 19:58:25,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:58:25,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:58:25,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:58:25,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:58:25,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-11-29 19:58:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-11-29 19:58:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:58:25,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:58:25,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:58:25,650 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:58:25,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:25 BoogieIcfgContainer [2020-11-29 19:58:25,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:58:25,653 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:58:25,654 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:58:25,658 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:58:25,659 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:58:25,659 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:58:24" (1/3) ... [2020-11-29 19:58:25,661 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595ded27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:58:25, skipping insertion in model container [2020-11-29 19:58:25,661 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:58:25,661 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:25" (2/3) ... [2020-11-29 19:58:25,661 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595ded27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:58:25, skipping insertion in model container [2020-11-29 19:58:25,662 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:58:25,662 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:25" (3/3) ... [2020-11-29 19:58:25,663 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2020-11-29 19:58:25,747 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:58:25,747 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:58:25,747 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:58:25,747 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:58:25,747 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:58:25,748 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:58:25,748 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:58:25,748 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:58:25,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 19:58:25,787 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-11-29 19:58:25,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:58:25,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:58:25,796 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:58:25,796 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:58:25,796 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:58:25,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 19:58:25,799 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-11-29 19:58:25,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:58:25,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:58:25,800 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:58:25,800 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:58:25,809 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 9#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2020-11-29 19:58:25,809 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 8#L5true assume !(0 == ~a); 11#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2020-11-29 19:58:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 51816, now seen corresponding path program 1 times [2020-11-29 19:58:25,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:25,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95910078] [2020-11-29 19:58:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:25,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:25,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:25,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash 29959, now seen corresponding path program 1 times [2020-11-29 19:58:25,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:25,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443786396] [2020-11-29 19:58:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:25,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:25,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:25,957 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:25,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:25,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1543650624, now seen corresponding path program 1 times [2020-11-29 19:58:25,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:25,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172216367] [2020-11-29 19:58:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:25,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:25,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:25,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:26,158 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:26,174 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:26,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:26,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:26,174 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:58:26,175 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:26,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:26,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:26,175 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2020-11-29 19:58:26,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:26,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:26,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:26,443 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:26,443 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:26,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,465 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:26,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,487 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:26,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:26,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:26,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,620 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 [2020-11-29 19:58:26,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,625 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:26,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:26,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:26,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,729 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:26,733 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,733 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:26,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,791 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:26,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:58:26,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:26,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,880 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-6} Honda state: {rec_#in~a=-6} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=0}, {rec_#in~a=-1}] Lambdas: [0, 10, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:26,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:26,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:26,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:26,917 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-11-29 19:58:27,008 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:27,009 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:27,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:27,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:27,009 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:58:27,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:27,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:27,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2020-11-29 19:58:27,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:27,010 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:27,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:27,299 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:27,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,308 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,313 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:27,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,370 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 [2020-11-29 19:58:27,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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) [2020-11-29 19:58:27,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,426 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,432 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3=0} Honda state: {ULTIMATE.start_main_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:27,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,500 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/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 [2020-11-29 19:58:27,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,569 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,569 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,610 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,641 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,642 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:27,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,673 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,680 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,680 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:58:27,717 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:27,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:27,755 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:58:27,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:58:27,935 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:58:27,937 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:27,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:27,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:27,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:27,937 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:58:27,938 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:27,938 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:27,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:27,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2020-11-29 19:58:27,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:27,938 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:27,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:27,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:28,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:28,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:28,193 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:28,199 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,211 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,211 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:58:28,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,253 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:58:28,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,317 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,317 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,318 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,318 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,320 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,383 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,416 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 Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,418 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:58:28,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:58:28,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,570 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:28,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:58:28,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:28,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:28,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,697 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:28,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:58:28,712 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:28,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:28,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:28,741 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 19:58:28,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:28,756 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-29 19:58:28,756 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-29 19:58:28,778 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:58:28,853 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-29 19:58:28,853 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:28,862 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:58:28,869 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-11-29 19:58:28,870 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:58:28,870 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2020-11-29 19:58:28,916 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 19:58:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:28,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:58:28,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:29,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:58:29,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:29,112 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-29 19:58:29,113 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2020-11-29 19:58:29,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 34 states and 42 transitions. Complement of second has 13 states. [2020-11-29 19:58:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:58:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 19:58:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-29 19:58:29,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-29 19:58:29,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:29,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 19:58:29,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:29,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-29 19:58:29,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:29,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2020-11-29 19:58:29,394 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:29,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 22 states and 29 transitions. [2020-11-29 19:58:29,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 19:58:29,403 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 19:58:29,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2020-11-29 19:58:29,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:58:29,404 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-11-29 19:58:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2020-11-29 19:58:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-29 19:58:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 19:58:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-11-29 19:58:29,441 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-29 19:58:29,442 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-29 19:58:29,442 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:58:29,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2020-11-29 19:58:29,443 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:29,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:58:29,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:58:29,445 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:29,445 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:58:29,445 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 116#L20 call main_#t~ret3 := rec(main_~i~0);< 115#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 125#recFINAL assume true; 132#recEXIT >#47#return; 123#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 124#L21-2 [2020-11-29 19:58:29,445 INFO L796 eck$LassoCheckResult]: Loop: 124#L21-2 assume !!(main_~res~1 < 1); 124#L21-2 [2020-11-29 19:58:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:29,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1684481175, now seen corresponding path program 1 times [2020-11-29 19:58:29,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:29,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109848576] [2020-11-29 19:58:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:58:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:29,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109848576] [2020-11-29 19:58:29,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:58:29,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:58:29,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214563277] [2020-11-29 19:58:29,555 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:58:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-11-29 19:58:29,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:29,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398089926] [2020-11-29 19:58:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:29,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:29,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:29,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:29,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:29,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:58:29,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:58:29,590 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 8 Second operand 5 states. [2020-11-29 19:58:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:29,659 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-11-29 19:58:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:58:29,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-29 19:58:29,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:29,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 20 transitions. [2020-11-29 19:58:29,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 19:58:29,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 19:58:29,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2020-11-29 19:58:29,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:58:29,664 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 19:58:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2020-11-29 19:58:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 19:58:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 19:58:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-29 19:58:29,676 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 19:58:29,676 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 19:58:29,676 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:58:29,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2020-11-29 19:58:29,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:29,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:58:29,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:58:29,681 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:29,681 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:58:29,682 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 175#L18 assume !(main_~i~0 <= 0); 170#L20 call main_#t~ret3 := rec(main_~i~0);< 169#recENTRY ~a := #in~a; 171#L5 assume !(0 == ~a); 173#L8 call #t~ret0 := rec(~a - 1);< 172#recENTRY ~a := #in~a; 174#L5 assume 0 == ~a;#res := 0; 178#recFINAL assume true; 184#recEXIT >#45#return; 182#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 179#L10-2 [2020-11-29 19:58:29,684 INFO L796 eck$LassoCheckResult]: Loop: 179#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 179#L10-2 [2020-11-29 19:58:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:29,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1511241834, now seen corresponding path program 1 times [2020-11-29 19:58:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360236889] [2020-11-29 19:58:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:29,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:29,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:29,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:29,724 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2020-11-29 19:58:29,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:29,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105691406] [2020-11-29 19:58:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:29,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:29,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:29,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -396143387, now seen corresponding path program 1 times [2020-11-29 19:58:29,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:29,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763248839] [2020-11-29 19:58:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 19:58:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:58:29,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763248839] [2020-11-29 19:58:29,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:58:29,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:58:29,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830172246] [2020-11-29 19:58:29,844 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:29,844 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:29,844 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:29,844 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:29,844 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:58:29,844 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:29,844 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:29,844 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:29,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2020-11-29 19:58:29,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:29,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:29,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:29,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:29,894 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:29,894 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:29,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:29,899 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:29,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:58:29,951 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:30,001 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:58:30,003 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:30,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:30,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:30,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:30,003 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:58:30,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:30,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:30,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:30,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2020-11-29 19:58:30,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:30,004 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:30,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:30,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:30,057 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:30,057 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:30,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:30,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:30,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:30,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:30,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:30,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:30,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:30,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:30,067 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:30,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:30,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:30,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:30,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:30,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:30,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:30,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:30,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:30,120 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:58:30,125 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:58:30,125 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_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:30,133 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:58:30,133 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:58:30,133 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:58:30,134 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:30,176 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:58:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:30,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:58:30,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:30,281 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:58:30,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:30,282 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-29 19:58:30,282 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-29 19:58:30,369 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 37 states and 49 transitions. Complement of second has 10 states. [2020-11-29 19:58:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:58:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:58:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-29 19:58:30,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 1 letters. [2020-11-29 19:58:30,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:30,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 1 letters. [2020-11-29 19:58:30,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:30,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 19:58:30,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:30,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 49 transitions. [2020-11-29 19:58:30,381 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:30,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 31 states and 41 transitions. [2020-11-29 19:58:30,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-29 19:58:30,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-29 19:58:30,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 41 transitions. [2020-11-29 19:58:30,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:58:30,387 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-11-29 19:58:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 41 transitions. [2020-11-29 19:58:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 19:58:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 19:58:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2020-11-29 19:58:30,396 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-11-29 19:58:30,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:58:30,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:58:30,399 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand 5 states. [2020-11-29 19:58:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:30,434 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-11-29 19:58:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:58:30,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2020-11-29 19:58:30,438 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:30,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 35 transitions. [2020-11-29 19:58:30,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-29 19:58:30,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-29 19:58:30,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2020-11-29 19:58:30,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:58:30,440 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-29 19:58:30,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2020-11-29 19:58:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 19:58:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 19:58:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-29 19:58:30,456 INFO L714 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-29 19:58:30,457 INFO L594 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-29 19:58:30,457 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:58:30,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2020-11-29 19:58:30,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-29 19:58:30,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:58:30,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:58:30,466 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:30,466 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:58:30,467 INFO L794 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 362#L18 assume !(main_~i~0 <= 0); 355#L20 call main_#t~ret3 := rec(main_~i~0);< 354#recENTRY ~a := #in~a; 356#L5 assume !(0 == ~a); 358#L8 call #t~ret0 := rec(~a - 1);< 357#recENTRY ~a := #in~a; 361#L5 assume 0 == ~a;#res := 0; 363#recFINAL assume true; 373#recEXIT >#45#return; 381#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 378#L10-2 assume !(~rescopy~0 > 0); 379#L10-3 #res := 1 + ~res~0; 382#recFINAL assume true; 374#recEXIT >#47#return; 364#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 365#L21-2 [2020-11-29 19:58:30,467 INFO L796 eck$LassoCheckResult]: Loop: 365#L21-2 assume !!(main_~res~1 < 1); 365#L21-2 [2020-11-29 19:58:30,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1423892654, now seen corresponding path program 1 times [2020-11-29 19:58:30,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:30,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619036916] [2020-11-29 19:58:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,513 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:30,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 2 times [2020-11-29 19:58:30,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:30,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251990233] [2020-11-29 19:58:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,523 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1190999276, now seen corresponding path program 1 times [2020-11-29 19:58:30,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:30,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784115387] [2020-11-29 19:58:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:30,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:58:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:58:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:58:30,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784115387] [2020-11-29 19:58:30,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078664158] [2020-11-29 19:58:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 19:58:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:30,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:58:30,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:58:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:58:30,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:58:30,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2020-11-29 19:58:30,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846704146] [2020-11-29 19:58:30,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:30,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:58:30,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:58:30,857 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. cyclomatic complexity: 9 Second operand 8 states. [2020-11-29 19:58:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:30,906 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-11-29 19:58:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:58:30,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2020-11-29 19:58:30,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:58:30,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 26 transitions. [2020-11-29 19:58:30,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 19:58:30,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 19:58:30,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2020-11-29 19:58:30,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:58:30,911 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-29 19:58:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2020-11-29 19:58:30,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-11-29 19:58:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:58:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-29 19:58:30,917 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-29 19:58:30,917 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-29 19:58:30,917 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 19:58:30,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2020-11-29 19:58:30,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:58:30,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:58:30,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:58:30,923 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:30,924 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:58:30,924 INFO L794 eck$LassoCheckResult]: Stem: 504#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 505#L18 assume !(main_~i~0 <= 0); 495#L20 call main_#t~ret3 := rec(main_~i~0);< 494#recENTRY ~a := #in~a; 496#L5 assume !(0 == ~a); 498#L8 call #t~ret0 := rec(~a - 1);< 497#recENTRY ~a := #in~a; 500#L5 assume !(0 == ~a); 499#L8 call #t~ret0 := rec(~a - 1);< 497#recENTRY ~a := #in~a; 501#L5 assume 0 == ~a;#res := 0; 510#recFINAL assume true; 512#recEXIT >#45#return; 511#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 502#L10-2 assume !(~rescopy~0 > 0); 503#L10-3 #res := 1 + ~res~0; 508#recFINAL assume true; 509#recEXIT >#45#return; 506#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 507#L10-2 [2020-11-29 19:58:30,924 INFO L796 eck$LassoCheckResult]: Loop: 507#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 507#L10-2 [2020-11-29 19:58:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash -274003163, now seen corresponding path program 1 times [2020-11-29 19:58:30,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:30,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105428447] [2020-11-29 19:58:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2020-11-29 19:58:30,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:30,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130908275] [2020-11-29 19:58:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:30,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:30,974 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:30,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:30,975 INFO L82 PathProgramCache]: Analyzing trace with hash 95836554, now seen corresponding path program 1 times [2020-11-29 19:58:30,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:30,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388947719] [2020-11-29 19:58:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:31,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:31,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:31,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:31,036 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:31,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:31,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:31,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:31,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:58:31,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:31,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:31,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:31,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2020-11-29 19:58:31,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:31,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:31,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:31,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:31,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:31,081 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:31,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:58:31,087 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:31,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:58:31,135 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:31,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:58:31,182 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:58:31,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:58:31,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:58:31,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:58:31,182 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:58:31,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:31,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:58:31,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:58:31,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2020-11-29 19:58:31,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:58:31,183 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:58:31,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:31,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:58:31,216 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:58:31,216 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:31,219 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:58:31,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:58:31,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:58:31,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:58:31,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:58:31,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:58:31,222 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:58:31,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:31,225 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:58:31,229 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:58:31,229 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_f3bd7d0f-ec13-4c40-a5a1-57cc77ae8b3d/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:58:31,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:58:31,233 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:58:31,233 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:58:31,233 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:58:31,271 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:58:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:58:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,389 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:31,391 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-29 19:58:31,391 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 19:58:31,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-11-29 19:58:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:58:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:58:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-29 19:58:31,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-29 19:58:31,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:31,457 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:58:31,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,554 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:58:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,571 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:31,575 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-29 19:58:31,575 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 19:58:31,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-11-29 19:58:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:58:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:58:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-29 19:58:31,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-29 19:58:31,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:31,697 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:58:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:58:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,799 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:31,801 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-29 19:58:31,801 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 19:58:31,865 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2020-11-29 19:58:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:58:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:58:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-29 19:58:31,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-29 19:58:31,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:31,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2020-11-29 19:58:31,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:31,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2020-11-29 19:58:31,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:58:31,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2020-11-29 19:58:31,869 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:58:31,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-11-29 19:58:31,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:58:31,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:58:31,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:58:31,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:58:31,870 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:58:31,870 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:58:31,870 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:58:31,871 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 19:58:31,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:58:31,871 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:58:31,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:58:31,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:58:31 BoogieIcfgContainer [2020-11-29 19:58:31,878 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:58:31,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:58:31,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:58:31,882 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:58:31,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:25" (3/4) ... [2020-11-29 19:58:31,886 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:58:31,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:58:31,888 INFO L168 Benchmark]: Toolchain (without parser) took 6978.95 ms. Allocated memory was 83.9 MB in the beginning and 132.1 MB in the end (delta: 48.2 MB). Free memory was 52.8 MB in the beginning and 87.6 MB in the end (delta: -34.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:31,889 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 54.7 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:31,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.30 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 85.7 MB in the end (delta: -33.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:31,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.94 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:31,901 INFO L168 Benchmark]: Boogie Preprocessor took 33.00 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.5 MB in the end (delta: 882.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:31,901 INFO L168 Benchmark]: RCFGBuilder took 380.52 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 73.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:31,905 INFO L168 Benchmark]: BuchiAutomizer took 6224.92 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 87.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:31,906 INFO L168 Benchmark]: Witness Printer took 7.70 ms. Allocated memory is still 132.1 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:31,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 54.7 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.30 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 85.7 MB in the end (delta: -33.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.94 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.00 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.5 MB in the end (delta: 882.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 380.52 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 73.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6224.92 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 87.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.70 ms. Allocated memory is still 132.1 MB. Free memory is still 87.6 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 4 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.4s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 102 SDtfs, 91 SDslu, 140 SDs, 0 SdLazy, 85 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf98 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf120 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 133ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...