./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 0.1.24-6b5699a [2019-11-25 08:47:27,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:27,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:28,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:28,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:28,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:28,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:28,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:28,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:28,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:28,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:28,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:28,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:28,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:28,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:28,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:28,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:28,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:28,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:28,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:28,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:28,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:28,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:28,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:28,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:28,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:28,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:28,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:28,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:28,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:28,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:28,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:28,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:28,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:28,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:28,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:28,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:28,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:28,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:28,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:28,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:28,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:47:28,070 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:28,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:28,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:28,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:28,073 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:28,073 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:47:28,073 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:47:28,073 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:47:28,074 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:47:28,074 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:47:28,075 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:47:28,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:28,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:28,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:28,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:28,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:47:28,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:47:28,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:47:28,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:28,077 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:47:28,077 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:28,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:47:28,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:28,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:28,078 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:47:28,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:28,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:28,078 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:47:28,079 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:47:28,079 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:28,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:28,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:28,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:28,273 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:28,275 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:28,275 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2019-11-25 08:47:28,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/data/c8fd92427/ea7f1a8bf0df486abd0b53899deedf4f/FLAG4586a8452 [2019-11-25 08:47:28,729 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:28,730 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/sv-benchmarks/c/termination-numeric/rec_counter3.c [2019-11-25 08:47:28,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/data/c8fd92427/ea7f1a8bf0df486abd0b53899deedf4f/FLAG4586a8452 [2019-11-25 08:47:28,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/data/c8fd92427/ea7f1a8bf0df486abd0b53899deedf4f [2019-11-25 08:47:28,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:28,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:28,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:28,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:28,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:28,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:28" (1/1) ... [2019-11-25 08:47:28,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc26540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:28, skipping insertion in model container [2019-11-25 08:47:28,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:28" (1/1) ... [2019-11-25 08:47:28,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:28,794 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:28,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:28,959 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:29,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:29,040 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:29,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29 WrapperNode [2019-11-25 08:47:29,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:29,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:29,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:29,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:29,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:29,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:29,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:29,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:29,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... [2019-11-25 08:47:29,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:29,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:29,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:29,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:29,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-11-25 08:47:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-11-25 08:47:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:29,327 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:29,327 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:47:29,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:29 BoogieIcfgContainer [2019-11-25 08:47:29,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:29,329 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:47:29,329 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:47:29,332 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:47:29,332 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:47:29,333 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:47:28" (1/3) ... [2019-11-25 08:47:29,334 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51345d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:47:29, skipping insertion in model container [2019-11-25 08:47:29,334 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:47:29,334 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:29" (2/3) ... [2019-11-25 08:47:29,334 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51345d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:47:29, skipping insertion in model container [2019-11-25 08:47:29,334 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:47:29,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:29" (3/3) ... [2019-11-25 08:47:29,336 INFO L371 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2019-11-25 08:47:29,426 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:47:29,427 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:47:29,427 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:47:29,427 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:29,427 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:29,427 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:47:29,428 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:29,428 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:47:29,463 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2019-11-25 08:47:29,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2019-11-25 08:47:29,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:29,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:29,501 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:47:29,501 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:47:29,502 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:47:29,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2019-11-25 08:47:29,505 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2019-11-25 08:47:29,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:29,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:29,506 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:47:29,506 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:47:29,513 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 9#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2019-11-25 08:47:29,515 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 8#L5true assume !(0 == ~a); 11#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2019-11-25 08:47:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:29,520 INFO L82 PathProgramCache]: Analyzing trace with hash 51816, now seen corresponding path program 1 times [2019-11-25 08:47:29,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:29,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726033377] [2019-11-25 08:47:29,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:29,601 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash 29959, now seen corresponding path program 1 times [2019-11-25 08:47:29,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:29,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490415771] [2019-11-25 08:47:29,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:29,614 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:29,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1543650624, now seen corresponding path program 1 times [2019-11-25 08:47:29,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:29,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452893384] [2019-11-25 08:47:29,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:29,630 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:29,714 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:29,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:29,716 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:29,716 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:29,717 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:47:29,717 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:29,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:29,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:29,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2019-11-25 08:47:29,718 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:29,718 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:29,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:29,856 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:29,857 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:29,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:29,866 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 [2019-11-25 08:47:29,876 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:29,876 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:29,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:29,900 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:29,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:29,906 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:29,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:29,921 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 [2019-11-25 08:47:29,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:29,927 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:29,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:29,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:29,948 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:29,948 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:29,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:29,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:29,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:29,959 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:29,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:29,970 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:29,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:47:29,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,017 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,017 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-1} Honda state: {rec_#in~a=-1} Generalized eigenvectors: [{rec_#in~a=-1}, {rec_#in~a=0}, {rec_#in~a=0}] Lambdas: [1, 0, 9] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:30,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,029 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,030 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-11-25 08:47:30,057 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:30,057 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:30,057 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:30,057 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:30,057 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:47:30,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:30,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:30,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2019-11-25 08:47:30,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:30,058 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:30,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,181 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:30,182 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,190 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,190 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,205 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,206 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,225 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 [2019-11-25 08:47:30,229 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,230 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,245 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,249 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,264 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,269 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,286 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,290 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,290 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,305 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,309 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:30,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,333 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,333 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:30,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,348 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,369 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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 [2019-11-25 08:47:30,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:47:30,387 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:47:30,387 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:30,414 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:47:30,430 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,448 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:47:30,449 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:30,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:30,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:30,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:30,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:47:30,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:30,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:30,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2019-11-25 08:47:30,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:30,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:30,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:30,565 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:30,569 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,585 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 [2019-11-25 08:47:30,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,595 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,601 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 [2019-11-25 08:47:30,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,613 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 [2019-11-25 08:47:30,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,617 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 [2019-11-25 08:47:30,619 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,625 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 [2019-11-25 08:47:30,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,629 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 [2019-11-25 08:47:30,632 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,648 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 [2019-11-25 08:47:30,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,663 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 [2019-11-25 08:47:30,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,677 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,685 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 [2019-11-25 08:47:30,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,689 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 [2019-11-25 08:47:30,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,697 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 [2019-11-25 08:47:30,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,701 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 [2019-11-25 08:47:30,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,712 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 [2019-11-25 08:47:30,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,720 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 [2019-11-25 08:47:30,724 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,734 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 [2019-11-25 08:47:30,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,745 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 [2019-11-25 08:47:30,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:30,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:30,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:30,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,752 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,760 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 [2019-11-25 08:47:30,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:30,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:30,763 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:47:30,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:30,784 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-25 08:47:30,785 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,808 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:47:30,854 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-25 08:47:30,854 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:30,864 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:30,871 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-25 08:47:30,871 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:47:30,872 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2019-11-25 08:47:30,878 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-25 08:47:30,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:30,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:47:30,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:30,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:47:30,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:31,030 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 [2019-11-25 08:47:31,031 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2019-11-25 08:47:31,179 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 34 states and 42 transitions. Complement of second has 13 states. [2019-11-25 08:47:31,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:47:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:47:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-25 08:47:31,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-25 08:47:31,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:31,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-25 08:47:31,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:31,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-25 08:47:31,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:31,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2019-11-25 08:47:31,195 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 22 states and 29 transitions. [2019-11-25 08:47:31,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-25 08:47:31,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-25 08:47:31,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2019-11-25 08:47:31,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:47:31,206 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-11-25 08:47:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2019-11-25 08:47:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-25 08:47:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:47:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-25 08:47:31,238 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-25 08:47:31,238 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-25 08:47:31,238 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:47:31,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2019-11-25 08:47:31,241 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:31,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:31,242 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:31,242 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:47:31,242 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 116#L20 call main_#t~ret3 := rec(main_~i~0);< 115#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 125#recFINAL assume true; 132#recEXIT >#47#return; 123#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 124#L21-2 [2019-11-25 08:47:31,242 INFO L796 eck$LassoCheckResult]: Loop: 124#L21-2 assume !!(main_~res~1 < 1); 124#L21-2 [2019-11-25 08:47:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1684481175, now seen corresponding path program 1 times [2019-11-25 08:47:31,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358865339] [2019-11-25 08:47:31,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:31,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358865339] [2019-11-25 08:47:31,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:31,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:47:31,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559792559] [2019-11-25 08:47:31,325 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:47:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,325 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2019-11-25 08:47:31,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871118608] [2019-11-25 08:47:31,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,332 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:31,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:31,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:31,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:31,342 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 8 Second operand 5 states. [2019-11-25 08:47:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:31,382 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-25 08:47:31,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:31,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-11-25 08:47:31,384 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 20 transitions. [2019-11-25 08:47:31,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-25 08:47:31,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-25 08:47:31,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2019-11-25 08:47:31,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:47:31,385 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-25 08:47:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2019-11-25 08:47:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:47:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:47:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-25 08:47:31,387 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-25 08:47:31,388 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-25 08:47:31,388 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:47:31,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2019-11-25 08:47:31,391 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:31,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:31,392 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:31,392 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:47:31,393 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 [2019-11-25 08:47:31,393 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 [2019-11-25 08:47:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1511241834, now seen corresponding path program 1 times [2019-11-25 08:47:31,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96288514] [2019-11-25 08:47:31,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,418 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-11-25 08:47:31,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532487904] [2019-11-25 08:47:31,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,428 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,429 INFO L82 PathProgramCache]: Analyzing trace with hash -396143387, now seen corresponding path program 1 times [2019-11-25 08:47:31,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101049013] [2019-11-25 08:47:31,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:47:31,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101049013] [2019-11-25 08:47:31,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:31,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:47:31,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941164450] [2019-11-25 08:47:31,513 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:31,514 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:31,514 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:31,514 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:31,514 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:47:31,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:31,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:31,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:31,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2019-11-25 08:47:31,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:31,514 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:31,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:31,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:31,546 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:31,547 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:31,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:31,555 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:31,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:47:31,565 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 [2019-11-25 08:47:31,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:47:31,578 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:31,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:31,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:31,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:31,578 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:47:31,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:31,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:31,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:31,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2019-11-25 08:47:31,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:31,579 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:31,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:31,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:31,617 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:31,617 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:31,631 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:47:31,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:31,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:31,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:31,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:31,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:31,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:31,634 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 [2019-11-25 08:47:31,636 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:31,641 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 [2019-11-25 08:47:31,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:31,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:31,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:31,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:31,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:31,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:31,644 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 [2019-11-25 08:47:31,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:47:31,648 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:47:31,649 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:31,657 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:47:31,657 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:47:31,657 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:47:31,657 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-11-25 08:47:31,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:47:31,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,806 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:31,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:31,807 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 [2019-11-25 08:47:31,807 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:47:31,862 INFO L76 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. [2019-11-25 08:47:31,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:47:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:47:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-25 08:47:31,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 1 letters. [2019-11-25 08:47:31,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:31,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 1 letters. [2019-11-25 08:47:31,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:31,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2019-11-25 08:47:31,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:31,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 49 transitions. [2019-11-25 08:47:31,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 31 states and 41 transitions. [2019-11-25 08:47:31,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-25 08:47:31,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-25 08:47:31,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 41 transitions. [2019-11-25 08:47:31,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:47:31,871 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-25 08:47:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 41 transitions. [2019-11-25 08:47:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-25 08:47:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:47:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-25 08:47:31,876 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-25 08:47:31,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:31,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:31,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:31,876 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand 5 states. [2019-11-25 08:47:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:31,891 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-25 08:47:31,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:31,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2019-11-25 08:47:31,894 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 35 transitions. [2019-11-25 08:47:31,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-25 08:47:31,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-25 08:47:31,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2019-11-25 08:47:31,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:47:31,895 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-25 08:47:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2019-11-25 08:47:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-25 08:47:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:47:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-11-25 08:47:31,900 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-25 08:47:31,900 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-25 08:47:31,901 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:47:31,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2019-11-25 08:47:31,902 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-25 08:47:31,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:31,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:31,903 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:31,904 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:47:31,904 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 [2019-11-25 08:47:31,905 INFO L796 eck$LassoCheckResult]: Loop: 365#L21-2 assume !!(main_~res~1 < 1); 365#L21-2 [2019-11-25 08:47:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1423892654, now seen corresponding path program 1 times [2019-11-25 08:47:31,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388711358] [2019-11-25 08:47:31,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,934 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:31,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,934 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 2 times [2019-11-25 08:47:31,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287175939] [2019-11-25 08:47:31,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:31,941 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1190999276, now seen corresponding path program 1 times [2019-11-25 08:47:31,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:31,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121833512] [2019-11-25 08:47:31,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:47:32,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121833512] [2019-11-25 08:47:32,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3782578] [2019-11-25 08:47:32,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:47:32,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:47:32,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2019-11-25 08:47:32,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900300841] [2019-11-25 08:47:32,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:47:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:47:32,137 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. cyclomatic complexity: 9 Second operand 8 states. [2019-11-25 08:47:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:32,168 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-11-25 08:47:32,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:47:32,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2019-11-25 08:47:32,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:47:32,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 26 transitions. [2019-11-25 08:47:32,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-25 08:47:32,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-25 08:47:32,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2019-11-25 08:47:32,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:47:32,172 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-25 08:47:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2019-11-25 08:47:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-25 08:47:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:47:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-25 08:47:32,174 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-25 08:47:32,174 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-25 08:47:32,174 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:47:32,175 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2019-11-25 08:47:32,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:47:32,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:47:32,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:47:32,176 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:32,176 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:47:32,176 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 [2019-11-25 08:47:32,179 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 [2019-11-25 08:47:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:32,180 INFO L82 PathProgramCache]: Analyzing trace with hash -274003163, now seen corresponding path program 1 times [2019-11-25 08:47:32,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:32,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182980043] [2019-11-25 08:47:32,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:32,211 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:32,211 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-11-25 08:47:32,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:32,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814532055] [2019-11-25 08:47:32,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:32,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:32,218 INFO L82 PathProgramCache]: Analyzing trace with hash 95836554, now seen corresponding path program 1 times [2019-11-25 08:47:32,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:32,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504868986] [2019-11-25 08:47:32,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:47:32,253 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:47:32,265 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:32,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:32,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:32,265 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:32,265 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:47:32,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:32,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:32,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:32,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2019-11-25 08:47:32,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:32,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:32,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:32,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:32,291 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:32,291 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:32,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:47:32,300 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_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:32,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:47:32,314 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 [2019-11-25 08:47:32,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:47:32,323 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:47:32,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:47:32,323 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:47:32,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:47:32,323 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:47:32,324 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:32,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:47:32,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:47:32,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2019-11-25 08:47:32,324 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:47:32,324 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:47:32,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:32,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:47:32,352 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:47:32,352 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:32,360 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 [2019-11-25 08:47:32,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:47:32,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:47:32,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:47:32,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:47:32,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:47:32,363 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:47:32,363 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 [2019-11-25 08:47:32,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:47:32,368 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:47:32,368 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b70ec42-e1e0-4cf7-ab3d-7632d41388bc/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) [2019-11-25 08:47:32,372 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:47:32,372 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:47:32,372 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:47:32,373 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-11-25 08:47:32,374 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:47:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,453 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:32,454 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 [2019-11-25 08:47:32,454 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:47:32,498 INFO L76 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. [2019-11-25 08:47:32,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:47:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:47:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-25 08:47:32,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-25 08:47:32,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:32,499 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:47:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,581 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:32,581 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 [2019-11-25 08:47:32,582 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:47:32,618 INFO L76 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. [2019-11-25 08:47:32,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:47:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:47:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-25 08:47:32,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-25 08:47:32,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:32,620 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:47:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:47:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:32,693 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:32,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:32,694 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 [2019-11-25 08:47:32,694 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:47:32,735 INFO L76 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. [2019-11-25 08:47:32,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:47:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:47:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-25 08:47:32,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-25 08:47:32,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:32,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2019-11-25 08:47:32,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:32,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2019-11-25 08:47:32,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:47:32,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2019-11-25 08:47:32,739 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:47:32,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-25 08:47:32,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:47:32,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:47:32,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:47:32,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:47:32,739 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:32,739 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:32,739 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:32,739 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:47:32,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:47:32,740 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:47:32,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:47:32,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:47:32 BoogieIcfgContainer [2019-11-25 08:47:32,746 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:47:32,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:32,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:32,747 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:32,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:29" (3/4) ... [2019-11-25 08:47:32,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:47:32,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:32,753 INFO L168 Benchmark]: Toolchain (without parser) took 3996.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 947.4 MB in the beginning and 916.4 MB in the end (delta: 31.0 MB). Peak memory consumption was 171.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:32,754 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:32,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:32,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:32,760 INFO L168 Benchmark]: Boogie Preprocessor took 12.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:32,760 INFO L168 Benchmark]: RCFGBuilder took 252.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:32,761 INFO L168 Benchmark]: BuchiAutomizer took 3417.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 916.4 MB in the end (delta: 201.5 MB). Peak memory consumption was 201.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:32,763 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 1.2 GB. Free memory is still 916.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:32,773 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 282.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 252.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3417.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 916.4 MB in the end (delta: 201.5 MB). Peak memory consumption was 201.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.82 ms. Allocated memory is still 1.2 GB. Free memory is still 916.4 MB. There was no memory consumed. Max. memory is 11.5 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 3.3s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. 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, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf124 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 118ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...