./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:27:13,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:27:13,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:27:13,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:27:13,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:27:13,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:27:13,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:27:13,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:27:13,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:27:13,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:27:13,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:27:13,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:27:13,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:27:13,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:27:13,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:27:13,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:27:13,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:27:13,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:27:13,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:27:13,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:27:13,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:27:13,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:27:13,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:27:13,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:27:13,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:27:13,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:27:13,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:27:13,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:27:13,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:27:13,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:27:13,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:27:13,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:27:13,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:27:13,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:27:13,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:27:13,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:27:13,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:27:13,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:27:13,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:27:13,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:27:13,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:27:13,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:27:13,955 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:27:13,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:27:13,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:27:13,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:27:13,957 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:27:13,957 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:27:13,957 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:27:13,957 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:27:13,957 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:27:13,958 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:27:13,958 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:27:13,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:27:13,958 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:27:13,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:27:13,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:27:13,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:27:13,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:27:13,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:27:13,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:27:13,959 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:27:13,959 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:27:13,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:27:13,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:27:13,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:27:13,960 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:27:13,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:27:13,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:27:13,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:27:13,960 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:27:13,961 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:27:13,961 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 [2019-12-07 17:27:14,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:27:14,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:27:14,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:27:14,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:27:14,076 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:27:14,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2019-12-07 17:27:14,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/data/35e61668e/a6bd10e6b8514cfb921803a4b76bdcda/FLAGf370fcd62 [2019-12-07 17:27:14,509 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:27:14,510 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2019-12-07 17:27:14,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/data/35e61668e/a6bd10e6b8514cfb921803a4b76bdcda/FLAGf370fcd62 [2019-12-07 17:27:14,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/data/35e61668e/a6bd10e6b8514cfb921803a4b76bdcda [2019-12-07 17:27:14,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:27:14,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:27:14,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:27:14,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:27:14,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:27:14,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc7a4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14, skipping insertion in model container [2019-12-07 17:27:14,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:27:14,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:27:14,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:27:14,645 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:27:14,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:27:14,695 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:27:14,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14 WrapperNode [2019-12-07 17:27:14,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:27:14,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:27:14,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:27:14,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:27:14,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:27:14,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:27:14,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:27:14,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:27:14,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... [2019-12-07 17:27:14,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:27:14,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:27:14,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:27:14,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:27:14,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:27:14,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:27:14,859 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:27:14,859 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 17:27:14,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:27:14 BoogieIcfgContainer [2019-12-07 17:27:14,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:27:14,860 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:27:14,860 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:27:14,863 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:27:14,863 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:27:14,863 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:27:14" (1/3) ... [2019-12-07 17:27:14,864 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d602042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:27:14, skipping insertion in model container [2019-12-07 17:27:14,864 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:27:14,864 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:14" (2/3) ... [2019-12-07 17:27:14,864 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d602042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:27:14, skipping insertion in model container [2019-12-07 17:27:14,864 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:27:14,864 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:27:14" (3/3) ... [2019-12-07 17:27:14,865 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-while2.c [2019-12-07 17:27:14,895 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:27:14,895 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:27:14,895 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:27:14,895 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:27:14,895 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:27:14,895 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:27:14,895 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:27:14,895 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:27:14,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 17:27:14,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:27:14,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:27:14,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:27:14,921 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:27:14,921 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:27:14,921 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:27:14,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 17:27:14,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:27:14,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:27:14,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:27:14,922 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:27:14,922 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:27:14,927 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 3#L17-2true [2019-12-07 17:27:14,927 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 6#L19-2true assume !(main_~j~0 > 0); 5#L19-3true main_~i~0 := main_~i~0 - 1; 3#L17-2true [2019-12-07 17:27:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:14,931 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 17:27:14,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:14,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832393845] [2019-12-07 17:27:14,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,000 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:27:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,001 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 17:27:15,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107332086] [2019-12-07 17:27:15,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,010 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:27:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-12-07 17:27:15,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652355859] [2019-12-07 17:27:15,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652355859] [2019-12-07 17:27:15,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:27:15,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:27:15,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953140974] [2019-12-07 17:27:15,091 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:27:15,092 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:27:15,092 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:27:15,092 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:27:15,092 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:27:15,092 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,092 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:27:15,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:27:15,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration1_Loop [2019-12-07 17:27:15,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:27:15,093 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:27:15,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,185 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:27:15,186 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:27:15,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,207 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:27:15,207 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,216 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:27:15,216 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=-3, ULTIMATE.start_main_~N~0=-3} Honda state: {ULTIMATE.start_main_~j~0=-3, ULTIMATE.start_main_~N~0=-3} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,221 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:27:15,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,236 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:27:15,237 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:27:15,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:27:15,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:27:15,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:27:15,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:27:15,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:27:15,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:27:15,238 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration1_Loop [2019-12-07 17:27:15,238 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:27:15,238 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:27:15,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,290 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:27:15,295 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,299 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:27:15,308 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:27:15,313 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,317 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:27:15,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,320 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,321 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:27:15,321 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:27:15,323 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:27:15,330 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:27:15,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:27:15,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:27:15,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:27:15,343 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:27:15,347 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:27:15,347 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_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,351 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:27:15,351 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:27:15,351 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:27:15,352 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 17:27:15,355 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:27:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,378 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,379 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,384 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,385 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,403 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:27:15,403 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 17:27:15,430 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-12-07 17:27:15,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:27:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:27:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-12-07 17:27:15,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 17:27:15,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 17:27:15,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 17:27:15,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,435 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-12-07 17:27:15,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:27:15,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-12-07 17:27:15,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 17:27:15,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 17:27:15,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 17:27:15,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:27:15,441 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 17:27:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 17:27:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-12-07 17:27:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 17:27:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-12-07 17:27:15,458 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-12-07 17:27:15,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:27:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:27:15,461 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 4 states. [2019-12-07 17:27:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:15,479 INFO L93 Difference]: Finished difference Result 11 states and 15 transitions. [2019-12-07 17:27:15,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:27:15,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2019-12-07 17:27:15,480 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-12-07 17:27:15,481 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 15 transitions. [2019-12-07 17:27:15,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 17:27:15,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 17:27:15,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2019-12-07 17:27:15,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:27:15,481 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 17:27:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2019-12-07 17:27:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2019-12-07 17:27:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 17:27:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 17:27:15,483 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 17:27:15,483 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 17:27:15,483 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:27:15,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 17:27:15,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:27:15,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:27:15,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:27:15,484 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:27:15,484 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 17:27:15,484 INFO L794 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 91#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 93#L19-2 [2019-12-07 17:27:15,484 INFO L796 eck$LassoCheckResult]: Loop: 93#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 93#L19-2 [2019-12-07 17:27:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 17:27:15,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146462898] [2019-12-07 17:27:15,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,491 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:27:15,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,491 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 17:27:15,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823978775] [2019-12-07 17:27:15,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,497 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:27:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,497 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 17:27:15,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099485019] [2019-12-07 17:27:15,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:27:15,512 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:27:15,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:27:15,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:27:15,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:27:15,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:27:15,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:27:15,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:27:15,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration2_Loop [2019-12-07 17:27:15,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:27:15,513 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:27:15,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,544 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:27:15,544 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,552 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:27:15,552 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,556 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:27:15,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,570 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:27:15,571 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:27:15,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:27:15,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:27:15,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:27:15,572 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:27:15,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:27:15,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:27:15,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration2_Loop [2019-12-07 17:27:15,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:27:15,572 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:27:15,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,604 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:27:15,604 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,607 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:27:15,611 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:27:15,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:27:15,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:27:15,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:27:15,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:27:15,625 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 17:27:15,625 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_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:27:15,633 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:27:15,633 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:27:15,633 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 17:27:15,635 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:27:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,651 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,651 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,655 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,655 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,655 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 17:27:15,656 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-12-07 17:27:15,663 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2019-12-07 17:27:15,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:27:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:27:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 17:27:15,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 17:27:15,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 17:27:15,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 17:27:15,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-12-07 17:27:15,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:27:15,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2019-12-07 17:27:15,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 17:27:15,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 17:27:15,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-12-07 17:27:15,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:27:15,667 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 17:27:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-12-07 17:27:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2019-12-07 17:27:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 17:27:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 17:27:15,668 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 17:27:15,668 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 17:27:15,668 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:27:15,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 17:27:15,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:27:15,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:27:15,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:27:15,669 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-12-07 17:27:15,669 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 17:27:15,669 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 141#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 142#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 145#L19-2 assume !(main_~j~0 > 0); 146#L19-3 main_~i~0 := main_~i~0 - 1; 143#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 144#L19-2 [2019-12-07 17:27:15,669 INFO L796 eck$LassoCheckResult]: Loop: 144#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 144#L19-2 [2019-12-07 17:27:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,669 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2019-12-07 17:27:15,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998322796] [2019-12-07 17:27:15,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998322796] [2019-12-07 17:27:15,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247279200] [2019-12-07 17:27:15,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,718 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,718 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:27:15,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-07 17:27:15,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376188444] [2019-12-07 17:27:15,743 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 17:27:15,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-12-07 17:27:15,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:15,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671273375] [2019-12-07 17:27:15,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:27:15,747 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:27:15,758 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:27:15,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:27:15,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:27:15,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:27:15,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:27:15,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:27:15,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:27:15,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration3_Loop [2019-12-07 17:27:15,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:27:15,759 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:27:15,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,796 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:27:15,796 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:27:15,802 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:27:15,806 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:27:15,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:27:15,818 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:27:15,819 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:27:15,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:27:15,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:27:15,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:27:15,819 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:27:15,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:27:15,820 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:27:15,820 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration3_Loop [2019-12-07 17:27:15,820 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:27:15,820 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:27:15,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:27:15,851 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:27:15,852 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,859 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:27:15,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:27:15,865 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b7ff420-5aad-47a7-8eff-9e781bec42ac/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 [2019-12-07 17:27:15,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:27:15,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:27:15,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:27:15,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:27:15,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:27:15,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:27:15,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:27:15,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:27:15,873 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:27:15,876 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:27:15,876 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_8b7ff420-5aad-47a7-8eff-9e781bec42ac/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:27:15,883 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:27:15,883 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:27:15,883 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:27:15,883 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 17:27:15,884 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:27:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,899 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,899 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,902 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,902 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,902 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 17:27:15,903 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 17:27:15,909 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 12 states and 16 transitions. Complement of second has 5 states. [2019-12-07 17:27:15,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:27:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:27:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 17:27:15,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 17:27:15,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,911 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:27:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,926 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,936 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,936 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,937 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 17:27:15,937 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 17:27:15,941 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 12 states and 16 transitions. Complement of second has 5 states. [2019-12-07 17:27:15,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:27:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:27:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 17:27:15,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 17:27:15,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,942 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:27:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,953 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:15,955 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:15,955 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:15,956 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 17:27:15,956 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 17:27:15,961 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2019-12-07 17:27:15,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:27:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:27:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 17:27:15,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 17:27:15,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2019-12-07 17:27:15,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 17:27:15,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:27:15,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-12-07 17:27:15,963 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:27:15,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-12-07 17:27:15,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:27:15,963 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:27:15,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:27:15,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:27:15,963 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:27:15,964 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:27:15,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 17:27:15,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:27:15,964 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2019-12-07 17:27:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:15,964 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 17:27:15,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:27:15,964 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 17:27:15,964 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:27:15,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:27:15,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:27:15,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:27:15,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:27:15,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:27:15,965 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:27:15,965 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:27:15,965 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:27:15,965 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:27:15,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:27:15,965 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:27:15,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:27:15,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:27:15 BoogieIcfgContainer [2019-12-07 17:27:15,969 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:27:15,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:27:15,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:27:15,970 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:27:15,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:27:14" (3/4) ... [2019-12-07 17:27:15,972 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:27:15,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:27:15,974 INFO L168 Benchmark]: Toolchain (without parser) took 1447.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -129.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:15,974 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:15,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:15,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:15,975 INFO L168 Benchmark]: Boogie Preprocessor took 11.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:15,975 INFO L168 Benchmark]: RCFGBuilder took 131.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:15,975 INFO L168 Benchmark]: BuchiAutomizer took 1109.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:15,976 INFO L168 Benchmark]: Witness Printer took 2.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:15,978 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 131.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1109.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function j and consists of 3 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 25 SDslu, 13 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...