./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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 32bit --witnessprinter.graph.data.programhash bbc43fe9834b77811d120f68e3a868f414cdd105 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:11:08,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:08,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:08,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:08,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:08,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:08,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:08,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:08,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:08,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:08,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:08,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:08,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:08,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:08,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:08,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:08,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:08,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:08,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:08,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:08,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:08,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:08,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:08,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:08,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:08,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:08,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:08,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:08,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:08,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:08,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:08,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:08,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:08,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:08,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:08,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:08,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:08,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:08,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:08,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:08,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:08,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:11:09,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:09,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:09,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:09,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:09,022 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:09,022 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:11:09,022 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:11:09,023 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:11:09,023 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:11:09,023 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:11:09,023 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:11:09,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:09,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:09,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:11:09,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:09,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:09,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:09,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:11:09,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:11:09,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:11:09,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:09,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:09,026 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:11:09,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:09,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:11:09,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:09,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:09,027 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:11:09,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:09,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:09,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:09,028 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:11:09,030 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:11:09,030 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbc43fe9834b77811d120f68e3a868f414cdd105 [2020-11-28 03:11:09,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:09,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:09,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:09,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:09,438 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:09,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2020-11-28 03:11:09,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/data/69afa8522/115a22efd9bc4c68a1f83023c96356f7/FLAGd2c4efaa3 [2020-11-28 03:11:10,160 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:10,161 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/sv-benchmarks/c/recursive/MultCommutative-2.c [2020-11-28 03:11:10,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/data/69afa8522/115a22efd9bc4c68a1f83023c96356f7/FLAGd2c4efaa3 [2020-11-28 03:11:10,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/data/69afa8522/115a22efd9bc4c68a1f83023c96356f7 [2020-11-28 03:11:10,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:10,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:10,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:10,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:10,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:10,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c224801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10, skipping insertion in model container [2020-11-28 03:11:10,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:10,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:10,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:10,865 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:10,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:10,923 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:10,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10 WrapperNode [2020-11-28 03:11:10,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:10,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:10,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:10,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:10,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:10,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:10,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:10,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:10,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... [2020-11-28 03:11:10,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:10,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:10,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:10,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:10,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-11-28 03:11:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-11-28 03:11:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:11,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:11,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:11,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:11,521 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:11:11,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:11 BoogieIcfgContainer [2020-11-28 03:11:11,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:11,524 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:11:11,524 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:11:11,529 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:11:11,530 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:11:11,530 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:11:10" (1/3) ... [2020-11-28 03:11:11,532 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6bf20b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:11:11, skipping insertion in model container [2020-11-28 03:11:11,532 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:11:11,532 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:10" (2/3) ... [2020-11-28 03:11:11,533 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6bf20b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:11:11, skipping insertion in model container [2020-11-28 03:11:11,533 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:11:11,533 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:11" (3/3) ... [2020-11-28 03:11:11,535 INFO L373 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2020-11-28 03:11:11,596 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:11:11,596 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:11:11,596 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:11:11,597 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:11,597 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:11,597 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:11:11,597 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:11,597 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:11:11,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-11-28 03:11:11,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:11:11,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:11:11,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:11:11,644 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:11:11,644 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:11:11,645 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:11:11,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-11-28 03:11:11,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:11:11,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:11:11,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:11:11,650 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:11:11,650 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:11:11,658 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 7#L29true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 14#L33true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 24#L36true call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 3#multENTRYtrue [2020-11-28 03:11:11,659 INFO L796 eck$LassoCheckResult]: Loop: 3#multENTRYtrue ~n := #in~n;~m := #in~m; 21#L18true assume ~m < 0; 16#L19true call #t~ret7 := mult(~n, -~m);< 3#multENTRYtrue [2020-11-28 03:11:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:11,666 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 1 times [2020-11-28 03:11:11,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:11,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550873118] [2020-11-28 03:11:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:11,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:11,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:11,866 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 1 times [2020-11-28 03:11:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:11,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041754971] [2020-11-28 03:11:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:11,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:11,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:11,901 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:11,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1236132511, now seen corresponding path program 1 times [2020-11-28 03:11:11,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:11,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567010242] [2020-11-28 03:11:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:12,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567010242] [2020-11-28 03:11:12,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:12,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:11:12,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790413158] [2020-11-28 03:11:12,186 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:12,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:12,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:12,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:12,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:11:12,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:12,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:12,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-11-28 03:11:12,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:12,195 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:12,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,514 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:12,530 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:12,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:12,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:12,586 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:12,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:12,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:12,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:12,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:12,657 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,662 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:12,662 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:12,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:12,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:12,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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 [2020-11-28 03:11:12,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:12,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:12,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:12,741 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret8=0} Honda state: {mult_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:12,769 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:11:12,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:12,900 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:11:12,901 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:12,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:12,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:12,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:12,902 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:11:12,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:12,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:12,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:12,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-11-28 03:11:12,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:12,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:12,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:12,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:13,112 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:13,117 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,123 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,128 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,128 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,131 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,158 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,160 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,161 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,166 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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 [2020-11-28 03:11:13,197 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,208 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,243 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,295 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,304 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,341 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:13,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:13,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:13,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:13,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:13,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:13,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:13,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:13,389 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:11:13,394 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:11:13,394 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_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:13,424 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:11:13,424 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:11:13,424 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:11:13,425 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2020-11-28 03:11:13,451 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:11:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:13,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:11:13,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:13,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:13,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:13,665 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:11:13,666 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states. Second operand 4 states. [2020-11-28 03:11:13,896 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states.. Second operand 4 states. Result 52 states and 67 transitions. Complement of second has 12 states. [2020-11-28 03:11:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:11:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:11:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-28 03:11:13,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:11:13,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:13,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:11:13,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:13,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-28 03:11:13,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:13,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 67 transitions. [2020-11-28 03:11:13,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:11:13,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 32 states and 45 transitions. [2020-11-28 03:11:13,923 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-11-28 03:11:13,923 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-28 03:11:13,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 45 transitions. [2020-11-28 03:11:13,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:11:13,926 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 45 transitions. [2020-11-28 03:11:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 45 transitions. [2020-11-28 03:11:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-11-28 03:11:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:11:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2020-11-28 03:11:13,964 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2020-11-28 03:11:13,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:13,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:13,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:13,970 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2020-11-28 03:11:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:14,052 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-11-28 03:11:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:14,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-28 03:11:14,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:11:14,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 34 transitions. [2020-11-28 03:11:14,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-11-28 03:11:14,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-28 03:11:14,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2020-11-28 03:11:14,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:11:14,060 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:11:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2020-11-28 03:11:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-11-28 03:11:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:11:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-11-28 03:11:14,065 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-11-28 03:11:14,065 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-11-28 03:11:14,066 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:11:14,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2020-11-28 03:11:14,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:11:14,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:11:14,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:11:14,068 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:14,068 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:11:14,069 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 207#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 200#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 201#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 196#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 195#multENTRY ~n := #in~n;~m := #in~m; 197#L18 assume !(~m < 0); 212#L21 assume !(0 == ~m); 202#L24 call #t~ret8 := mult(~n, ~m - 1);< 199#multENTRY [2020-11-28 03:11:14,069 INFO L796 eck$LassoCheckResult]: Loop: 199#multENTRY ~n := #in~n;~m := #in~m; 216#L18 assume ~m < 0; 205#L19 call #t~ret7 := mult(~n, -~m);< 199#multENTRY [2020-11-28 03:11:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 1 times [2020-11-28 03:11:14,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:14,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449568561] [2020-11-28 03:11:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:14,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:14,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:14,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:14,126 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 2 times [2020-11-28 03:11:14,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:14,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016717581] [2020-11-28 03:11:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:14,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:14,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:14,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash -558597032, now seen corresponding path program 1 times [2020-11-28 03:11:14,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:14,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160175343] [2020-11-28 03:11:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:14,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160175343] [2020-11-28 03:11:14,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:14,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:11:14,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460119861] [2020-11-28 03:11:14,329 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:14,329 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:14,330 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:14,330 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:14,330 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:11:14,330 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,330 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:14,330 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:14,330 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-11-28 03:11:14,330 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:14,330 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:14,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,451 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:14,451 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:14,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:14,461 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:14,461 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:14,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:14,499 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:14,499 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:14,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:14,539 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:14,539 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) [2020-11-28 03:11:14,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:14,575 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,594 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:14,595 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:14,630 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:11:14,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:14,769 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:11:14,771 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:14,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:14,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:14,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:14,771 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:11:14,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:14,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:14,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-11-28 03:11:14,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:14,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:14,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:14,891 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:14,891 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:14,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:14,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:14,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:14,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:14,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:14,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:14,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:14,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:14,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) [2020-11-28 03:11:14,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:14,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:14,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:14,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:14,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:14,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:14,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:14,971 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 [2020-11-28 03:11:14,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:15,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:15,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:15,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:15,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:15,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:15,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:15,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:15,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:15,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:15,079 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:15,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:15,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:15,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:15,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:15,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:15,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:15,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:15,089 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:11:15,093 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:11:15,093 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_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:15,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:11:15,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:11:15,097 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:11:15,097 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:15,140 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:11:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:15,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:11:15,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:15,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:15,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:15,297 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:11:15,297 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-11-28 03:11:15,454 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 73 states and 92 transitions. Complement of second has 15 states. [2020-11-28 03:11:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:11:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:11:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-11-28 03:11:15,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-28 03:11:15,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:15,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-28 03:11:15,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:15,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 6 letters. [2020-11-28 03:11:15,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:15,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 92 transitions. [2020-11-28 03:11:15,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-28 03:11:15,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 51 states and 66 transitions. [2020-11-28 03:11:15,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-11-28 03:11:15,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-11-28 03:11:15,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 66 transitions. [2020-11-28 03:11:15,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:11:15,469 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-11-28 03:11:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 66 transitions. [2020-11-28 03:11:15,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-11-28 03:11:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 03:11:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-11-28 03:11:15,477 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-11-28 03:11:15,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:15,478 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2020-11-28 03:11:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:15,561 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-11-28 03:11:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:11:15,562 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2020-11-28 03:11:15,565 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-28 03:11:15,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 48 transitions. [2020-11-28 03:11:15,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-28 03:11:15,573 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-11-28 03:11:15,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 48 transitions. [2020-11-28 03:11:15,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:11:15,575 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 03:11:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 48 transitions. [2020-11-28 03:11:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 03:11:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 03:11:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-28 03:11:15,591 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 03:11:15,591 INFO L594 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 03:11:15,591 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:11:15,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 48 transitions. [2020-11-28 03:11:15,593 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-28 03:11:15,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:11:15,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:11:15,601 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:15,601 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:11:15,602 INFO L794 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 480#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 472#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 473#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 483#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 489#multENTRY ~n := #in~n;~m := #in~m; 495#L18 assume !(~m < 0); 493#L21 assume 0 == ~m;#res := 0; 494#multFINAL assume true; 507#multEXIT >#48#return; 506#L36-1 main_~res1~0 := main_#t~ret11;havoc main_#t~ret11; 502#L37 call main_#t~ret12 := mult(main_~n~0, main_~m~0);< 505#multENTRY [2020-11-28 03:11:15,602 INFO L796 eck$LassoCheckResult]: Loop: 505#multENTRY ~n := #in~n;~m := #in~m; 504#L18 assume ~m < 0; 501#L19 call #t~ret7 := mult(~n, -~m);< 505#multENTRY [2020-11-28 03:11:15,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 1 times [2020-11-28 03:11:15,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:15,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363775330] [2020-11-28 03:11:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:15,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:15,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:15,659 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 3 times [2020-11-28 03:11:15,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:15,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290971647] [2020-11-28 03:11:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:15,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:15,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:15,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1141566508, now seen corresponding path program 1 times [2020-11-28 03:11:15,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:15,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547496422] [2020-11-28 03:11:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:11:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:15,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547496422] [2020-11-28 03:11:15,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:15,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:11:15,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711168800] [2020-11-28 03:11:15,822 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:15,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:15,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:15,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:15,823 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:11:15,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:15,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:15,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:15,823 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-11-28 03:11:15,823 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:15,823 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:15,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:15,979 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:15,979 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:15,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:15,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:15,999 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:15,999 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret7=0} Honda state: {mult_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:16,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:16,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:16,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret8=0} Honda state: {mult_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:16,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:16,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:16,082 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:16,082 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:16,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:16,129 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:16,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:16,173 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:11:16,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:16,295 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:11:16,297 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:16,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:16,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:16,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:16,297 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:11:16,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:16,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:16,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-11-28 03:11:16,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:16,298 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:16,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:16,438 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:16,438 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) [2020-11-28 03:11:16,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:16,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:16,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:16,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:16,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:16,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:16,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:16,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,448 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/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) [2020-11-28 03:11:16,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:16,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:16,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:16,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:16,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:16,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:16,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:16,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,497 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:16,544 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:16,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:16,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:16,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:16,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:16,547 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:16,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:16,551 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:16,594 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:16,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:16,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:16,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:16,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:16,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:16,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:16,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:16,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:16,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:16,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:16,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:16,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:16,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:16,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:16,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,657 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:11:16,660 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:11:16,660 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_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:16,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:11:16,668 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:11:16,668 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:11:16,668 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:16,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:11:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:16,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:11:16,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:16,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:16,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:16,874 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-28 03:11:16,874 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-11-28 03:11:17,003 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 82 states and 91 transitions. Complement of second has 14 states. [2020-11-28 03:11:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:11:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:11:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-28 03:11:17,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-28 03:11:17,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:17,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-28 03:11:17,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:17,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2020-11-28 03:11:17,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:17,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 91 transitions. [2020-11-28 03:11:17,010 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-28 03:11:17,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 63 states and 71 transitions. [2020-11-28 03:11:17,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2020-11-28 03:11:17,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2020-11-28 03:11:17,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 71 transitions. [2020-11-28 03:11:17,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:11:17,022 INFO L691 BuchiCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-11-28 03:11:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 71 transitions. [2020-11-28 03:11:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-11-28 03:11:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:11:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-11-28 03:11:17,032 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-11-28 03:11:17,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:17,034 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-11-28 03:11:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:17,085 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-11-28 03:11:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:17,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2020-11-28 03:11:17,087 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-28 03:11:17,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 36 states and 40 transitions. [2020-11-28 03:11:17,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-28 03:11:17,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-28 03:11:17,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2020-11-28 03:11:17,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:11:17,089 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-28 03:11:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2020-11-28 03:11:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-28 03:11:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:11:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-28 03:11:17,093 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-28 03:11:17,093 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-28 03:11:17,093 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:11:17,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 36 transitions. [2020-11-28 03:11:17,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-28 03:11:17,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:11:17,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:11:17,101 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:17,101 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:11:17,101 INFO L794 eck$LassoCheckResult]: Stem: 767#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 766#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 760#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 761#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 769#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 774#multENTRY ~n := #in~n;~m := #in~m; 780#L18 assume !(~m < 0); 777#L21 assume 0 == ~m;#res := 0; 776#multFINAL assume true; 775#multEXIT >#48#return; 771#L36-1 main_~res1~0 := main_#t~ret11;havoc main_#t~ret11; 759#L37 call main_#t~ret12 := mult(main_~n~0, main_~m~0);< 756#multENTRY [2020-11-28 03:11:17,102 INFO L796 eck$LassoCheckResult]: Loop: 756#multENTRY ~n := #in~n;~m := #in~m; 758#L18 assume !(~m < 0); 768#L21 assume !(0 == ~m); 757#L24 call #t~ret8 := mult(~n, ~m - 1);< 756#multENTRY [2020-11-28 03:11:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:17,102 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 2 times [2020-11-28 03:11:17,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:17,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442876685] [2020-11-28 03:11:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:17,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:17,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:17,141 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:17,142 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 1 times [2020-11-28 03:11:17,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:17,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336524595] [2020-11-28 03:11:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:17,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:17,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:17,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1028821475, now seen corresponding path program 1 times [2020-11-28 03:11:17,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:17,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184278942] [2020-11-28 03:11:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:17,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:17,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:17,182 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:17,330 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:17,330 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:17,330 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:17,330 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:17,330 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:11:17,331 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,331 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:17,331 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:17,331 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-11-28 03:11:17,331 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:17,331 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:17,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:17,461 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:17,471 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,477 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:17,477 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:17,523 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:11:17,575 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 [2020-11-28 03:11:17,645 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:11:17,646 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:17,646 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:17,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:17,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:17,647 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:11:17,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:17,647 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:17,647 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-11-28 03:11:17,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:17,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:17,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:17,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:17,769 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,773 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:17,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:17,775 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:17,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:17,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:17,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:17,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:17,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,779 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,824 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:17,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:17,826 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:17,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:17,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:17,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:17,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:17,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:17,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:17,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:17,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:17,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:17,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:17,878 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:17,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:17,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:17,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:17,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:17,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:17,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:17,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:17,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,932 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:11:17,935 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:11:17,935 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_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:17,938 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:11:17,938 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:11:17,939 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:11:17,939 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:17,980 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:11:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:18,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:11:18,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:18,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:11:18,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:18,142 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2020-11-28 03:11:18,142 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6 Second operand 6 states. [2020-11-28 03:11:18,360 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6. Second operand 6 states. Result 42 states and 46 transitions. Complement of second has 17 states. [2020-11-28 03:11:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:11:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:11:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-11-28 03:11:18,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-28 03:11:18,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:18,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-28 03:11:18,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:18,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 8 letters. [2020-11-28 03:11:18,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:18,363 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 46 transitions. [2020-11-28 03:11:18,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:11:18,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 16 states and 16 transitions. [2020-11-28 03:11:18,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 03:11:18,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:11:18,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 16 transitions. [2020-11-28 03:11:18,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:11:18,365 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 03:11:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 16 transitions. [2020-11-28 03:11:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 9. [2020-11-28 03:11:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:11:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 03:11:18,367 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:11:18,367 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:11:18,367 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:11:18,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 9 transitions. [2020-11-28 03:11:18,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:11:18,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:11:18,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:11:18,368 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:11:18,368 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:11:18,368 INFO L794 eck$LassoCheckResult]: Stem: 927#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 921#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 922#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 929#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 926#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 923#multENTRY [2020-11-28 03:11:18,369 INFO L796 eck$LassoCheckResult]: Loop: 923#multENTRY ~n := #in~n;~m := #in~m; 925#L18 assume !(~m < 0); 928#L21 assume !(0 == ~m); 924#L24 call #t~ret8 := mult(~n, ~m - 1);< 923#multENTRY [2020-11-28 03:11:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,369 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 2 times [2020-11-28 03:11:18,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:18,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407170344] [2020-11-28 03:11:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,405 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 2 times [2020-11-28 03:11:18,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:18,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212892873] [2020-11-28 03:11:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,413 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,413 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 2 times [2020-11-28 03:11:18,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:18,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633786735] [2020-11-28 03:11:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:18,516 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:18,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:18,516 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:18,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:18,516 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:11:18,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:18,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:18,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-11-28 03:11:18,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:18,517 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:18,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,628 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:18,628 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:18,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:18,635 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,639 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:18,639 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:18,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:18,682 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,687 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:18,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:18,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:18,733 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:18,733 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:18,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:18,762 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:11:18,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret7=0} Honda state: {mult_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:11:18,790 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:11:18,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:11:18,850 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:11:18,851 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:11:18,851 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:11:18,851 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:11:18,851 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:11:18,851 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:11:18,851 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,851 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:11:18,852 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:11:18,852 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-11-28 03:11:18,852 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:11:18,852 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:11:18,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:11:18,981 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:11:18,981 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:18,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:18,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:18,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:18,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:18,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:18,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:18,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:18,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:18,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:19,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:19,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:19,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:19,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:19,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:19,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:19,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:19,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:19,032 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:19,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:19,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:19,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:19,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:19,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:19,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:19,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:19,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:11:19,070 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:11:19,096 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:11:19,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:11:19,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:11:19,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:11:19,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:11:19,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:11:19,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:11:19,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:19,103 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:11:19,121 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:11:19,121 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_084d71dc-a200-4cfe-b6aa-91341670e81b/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:11:19,124 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:11:19,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:11:19,124 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:11:19,124 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2020-11-28 03:11:19,147 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:11:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:19,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:11:19,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:19,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:11:19,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:19,335 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:11:19,335 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1 Second operand 5 states. [2020-11-28 03:11:19,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1. Second operand 5 states. Result 19 states and 19 transitions. Complement of second has 15 states. [2020-11-28 03:11:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:11:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:11:19,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9 transitions. [2020-11-28 03:11:19,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-28 03:11:19,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:19,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-28 03:11:19,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:19,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2020-11-28 03:11:19,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:11:19,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 19 transitions. [2020-11-28 03:11:19,424 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:11:19,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-11-28 03:11:19,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:11:19,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:11:19,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:11:19,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:11:19,425 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:11:19,425 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:11:19,425 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:11:19,425 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:11:19,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:11:19,425 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:11:19,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:11:19,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:11:19 BoogieIcfgContainer [2020-11-28 03:11:19,430 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:11:19,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:19,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:19,431 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:19,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:11" (3/4) ... [2020-11-28 03:11:19,439 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:11:19,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:19,441 INFO L168 Benchmark]: Toolchain (without parser) took 8879.77 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 68.1 MB in the beginning and 89.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,441 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.97 ms. Allocated memory is still 102.8 MB. Free memory was 67.9 MB in the beginning and 79.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 102.8 MB. Free memory was 79.7 MB in the beginning and 78.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,442 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 102.8 MB. Free memory was 78.3 MB in the beginning and 77.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,443 INFO L168 Benchmark]: RCFGBuilder took 526.49 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 64.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,444 INFO L168 Benchmark]: BuchiAutomizer took 7906.15 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 64.7 MB in the beginning and 89.1 MB in the end (delta: -24.4 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,444 INFO L168 Benchmark]: Witness Printer took 8.68 ms. Allocated memory is still 127.9 MB. Free memory is still 89.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.97 ms. Allocated memory is still 102.8 MB. Free memory was 67.9 MB in the beginning and 79.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 102.8 MB. Free memory was 79.7 MB in the beginning and 78.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 102.8 MB. Free memory was 78.3 MB in the beginning and 77.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 526.49 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 64.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7906.15 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 64.7 MB in the beginning and 89.1 MB in the end (delta: -24.4 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. * Witness Printer took 8.68 ms. Allocated memory is still 127.9 MB. Free memory is still 89.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 6 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.8s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 5.6s. Construction of modules took 0.3s. Büchi inclusion checks took 1.5s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 42 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 128 SDtfs, 140 SDslu, 112 SDs, 0 SdLazy, 165 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf97 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf94 smp86 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...