./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/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 0.1.24-cad4683 [2019-11-15 23:18:20,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:18:20,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:18:20,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:18:20,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:18:20,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:18:20,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:18:20,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:18:20,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:18:20,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:18:20,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:18:20,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:18:20,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:18:20,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:18:20,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:18:20,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:18:20,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:18:20,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:18:20,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:18:20,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:18:20,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:18:20,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:18:20,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:18:20,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:18:20,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:18:20,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:18:20,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:18:20,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:18:20,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:18:20,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:18:20,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:18:20,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:18:20,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:18:20,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:18:20,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:18:20,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:18:20,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:18:20,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:18:20,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:18:20,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:18:20,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:18:20,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:18:20,978 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:18:20,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:18:20,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:18:20,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:18:20,980 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:18:20,980 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:18:20,980 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:18:20,980 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:18:20,981 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:18:20,981 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:18:20,981 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:18:20,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:18:20,981 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:18:20,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:18:20,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:18:20,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:18:20,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:18:20,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:18:20,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:18:20,983 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:18:20,983 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:18:20,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:18:20,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:18:20,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:18:20,984 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:18:20,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:18:20,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:18:20,985 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:18:20,986 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:18:20,986 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_e11020f6-3ce6-4987-a53b-f375996cded4/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 [2019-11-15 23:18:21,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:18:21,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:18:21,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:18:21,028 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:18:21,028 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:18:21,029 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2019-11-15 23:18:21,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/data/93f520aef/b2c7f9ac7e144922b682f191ec1a4e61/FLAG7655f1a73 [2019-11-15 23:18:21,488 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:18:21,489 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2019-11-15 23:18:21,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/data/93f520aef/b2c7f9ac7e144922b682f191ec1a4e61/FLAG7655f1a73 [2019-11-15 23:18:21,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/data/93f520aef/b2c7f9ac7e144922b682f191ec1a4e61 [2019-11-15 23:18:21,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:18:21,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:18:21,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:18:21,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:18:21,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:18:21,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff8676e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21, skipping insertion in model container [2019-11-15 23:18:21,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,529 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:18:21,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:18:21,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:18:21,749 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:18:21,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:18:21,775 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:18:21,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21 WrapperNode [2019-11-15 23:18:21,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:18:21,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:18:21,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:18:21,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:18:21,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:18:21,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:18:21,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:18:21,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:18:21,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... [2019-11-15 23:18:21,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:18:21,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:18:21,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:18:21,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:18:21,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:18:21,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:18:21,985 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:18:21,985 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 23:18:21,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:18:21 BoogieIcfgContainer [2019-11-15 23:18:21,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:18:21,987 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:18:21,987 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:18:21,990 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:18:21,990 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:18:21,991 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:18:21" (1/3) ... [2019-11-15 23:18:21,991 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e36a8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:18:21, skipping insertion in model container [2019-11-15 23:18:21,991 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:18:21,992 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:18:21" (2/3) ... [2019-11-15 23:18:21,992 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e36a8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:18:21, skipping insertion in model container [2019-11-15 23:18:21,992 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:18:21,992 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:18:21" (3/3) ... [2019-11-15 23:18:21,993 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-while2.c [2019-11-15 23:18:22,030 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:18:22,031 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:18:22,031 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:18:22,031 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:18:22,031 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:18:22,032 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:18:22,032 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:18:22,032 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:18:22,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:18:22,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:18:22,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:18:22,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:18:22,067 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:18:22,067 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:18:22,067 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:18:22,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:18:22,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:18:22,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:18:22,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:18:22,068 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:18:22,068 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:18:22,073 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 3#L17-2true [2019-11-15 23:18:22,073 INFO L793 eck$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 [2019-11-15 23:18:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:22,077 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:18:22,083 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:22,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133794524] [2019-11-15 23:18:22,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,153 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:18:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-15 23:18:22,154 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:22,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418221986] [2019-11-15 23:18:22,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,155 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,166 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:18:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:22,168 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-15 23:18:22,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:22,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911098621] [2019-11-15 23:18:22,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:22,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911098621] [2019-11-15 23:18:22,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:18:22,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:18:22,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704791284] [2019-11-15 23:18:22,288 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:18:22,289 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:18:22,289 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:18:22,289 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:18:22,289 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:18:22,289 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:22,289 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:18:22,290 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:18:22,290 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration1_Loop [2019-11-15 23:18:22,290 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:18:22,290 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:18:22,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,460 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:18:22,461 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/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 [2019-11-15 23:18:22,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:22,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:18:22,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:18:22,487 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_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:18:22,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:22,504 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:22,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:18:22,508 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_e11020f6-3ce6-4987-a53b-f375996cded4/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 [2019-11-15 23:18:22,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:22,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:18:22,529 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:18:22,529 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_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:22,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:22,534 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:22,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:18:22,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:18:22,556 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:18:22,558 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:18:22,558 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:18:22,558 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:18:22,558 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:18:22,558 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:18:22,559 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:22,559 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:18:22,559 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:18:22,559 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration1_Loop [2019-11-15 23:18:22,559 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:18:22,559 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:18:22,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:22,684 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:18:22,688 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:18:22,690 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:22,694 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:22,694 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:22,695 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:22,695 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:22,705 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:18:22,705 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:18:22,721 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:18:22,726 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:22,728 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:22,728 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:18:22,728 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:22,728 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:22,728 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:22,729 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:18:22,729 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:18:22,731 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:18:22,731 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:22,731 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:22,732 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:22,732 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:22,732 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:22,733 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:18:22,733 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:18:22,747 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:18:22,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:22,749 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:22,749 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:18:22,749 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:22,749 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:22,749 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:22,750 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:18:22,750 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:18:22,756 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:18:22,765 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:18:22,765 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:18:22,767 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:18:22,779 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:18:22,779 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:18:22,780 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-15 23:18:22,782 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:18:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:22,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:18:22,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:22,824 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:18:22,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:22,858 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 [2019-11-15 23:18:22,859 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-15 23:18:22,889 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. [2019-11-15 23:18:22,890 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 [2019-11-15 23:18:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:18:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-15 23:18:22,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-15 23:18:22,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:22,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 23:18:22,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:22,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-15 23:18:22,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:22,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-15 23:18:22,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:18:22,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-15 23:18:22,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-15 23:18:22,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-15 23:18:22,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-15 23:18:22,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:18:22,904 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:18:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-15 23:18:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-15 23:18:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 23:18:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-15 23:18:22,923 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-15 23:18:22,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:18:22,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:18:22,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:18:22,926 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 4 states. [2019-11-15 23:18:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:18:22,963 INFO L93 Difference]: Finished difference Result 11 states and 15 transitions. [2019-11-15 23:18:22,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:18:22,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2019-11-15 23:18:22,966 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-15 23:18:22,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 15 transitions. [2019-11-15 23:18:22,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 23:18:22,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 23:18:22,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2019-11-15 23:18:22,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:18:22,967 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-15 23:18:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2019-11-15 23:18:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2019-11-15 23:18:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:18:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-15 23:18:22,969 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:18:22,969 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:18:22,969 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:18:22,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-15 23:18:22,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:18:22,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:18:22,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:18:22,970 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:18:22,970 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:18:22,970 INFO L791 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 91#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 93#L19-2 [2019-11-15 23:18:22,971 INFO L793 eck$LassoCheckResult]: Loop: 93#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 93#L19-2 [2019-11-15 23:18:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:22,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 23:18:22,971 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:22,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608189166] [2019-11-15 23:18:22,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,992 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:18:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-15 23:18:22,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:22,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543723816] [2019-11-15 23:18:22,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:22,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:22,999 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:18:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,000 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-15 23:18:23,000 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:23,000 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116979243] [2019-11-15 23:18:23,000 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:23,001 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:23,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:23,020 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:18:23,035 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:18:23,036 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:18:23,036 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:18:23,036 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:18:23,036 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:18:23,036 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,036 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:18:23,036 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:18:23,037 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration2_Loop [2019-11-15 23:18:23,037 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:18:23,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:18:23,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,101 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:18:23,101 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:23,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:18:23,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:18:23,122 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_e11020f6-3ce6-4987-a53b-f375996cded4/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) [2019-11-15 23:18:23,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:23,140 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:18:23,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:18:23,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:18:23,166 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:18:23,166 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:18:23,166 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:18:23,167 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:18:23,167 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:18:23,167 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,167 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:18:23,167 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:18:23,167 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration2_Loop [2019-11-15 23:18:23,167 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:18:23,167 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:18:23,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,231 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:18:23,231 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:18:23,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:23,233 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:23,233 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:23,233 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:23,233 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:23,235 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:18:23,235 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:18:23,238 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:18:23,239 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:23,241 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:23,241 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:18:23,242 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:23,242 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:23,242 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:23,246 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:18:23,246 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:18:23,257 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:18:23,262 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:18:23,264 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:18:23,265 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:18:23,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:18:23,266 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:18:23,266 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-15 23:18:23,266 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:18:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,293 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:23,293 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 [2019-11-15 23:18:23,293 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-15 23:18:23,304 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. [2019-11-15 23:18:23,305 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 [2019-11-15 23:18:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:18:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 23:18:23,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-15 23:18:23,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-15 23:18:23,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-15 23:18:23,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-11-15 23:18:23,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:18:23,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2019-11-15 23:18:23,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-15 23:18:23,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-15 23:18:23,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-11-15 23:18:23,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:18:23,309 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-15 23:18:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-11-15 23:18:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2019-11-15 23:18:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:18:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-15 23:18:23,310 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 23:18:23,310 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 23:18:23,310 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:18:23,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-15 23:18:23,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:18:23,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:18:23,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:18:23,313 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-11-15 23:18:23,314 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:18:23,314 INFO L791 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 141#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 142#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 145#L19-2 assume !(main_~j~0 > 0); 146#L19-3 main_~i~0 := main_~i~0 - 1; 143#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 144#L19-2 [2019-11-15 23:18:23,314 INFO L793 eck$LassoCheckResult]: Loop: 144#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 144#L19-2 [2019-11-15 23:18:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,314 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2019-11-15 23:18:23,315 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:23,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495720392] [2019-11-15 23:18:23,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:23,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:23,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:23,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495720392] [2019-11-15 23:18:23,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160607086] [2019-11-15 23:18:23,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:18:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:23,453 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:18:23,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-15 23:18:23,454 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136761303] [2019-11-15 23:18:23,454 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 23:18:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,454 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-15 23:18:23,454 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:18:23,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100721870] [2019-11-15 23:18:23,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:23,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:18:23,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:18:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:18:23,459 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:18:23,472 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:18:23,472 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:18:23,472 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:18:23,472 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:18:23,473 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:18:23,473 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,473 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:18:23,473 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:18:23,473 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration3_Loop [2019-11-15 23:18:23,473 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:18:23,473 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:18:23,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:18:23,535 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/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) [2019-11-15 23:18:23,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:23,548 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,553 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:18:23,553 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_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:18:23,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:18:23,569 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e11020f6-3ce6-4987-a53b-f375996cded4/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:18:23,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:18:23,588 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,595 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:18:23,597 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:18:23,598 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:18:23,598 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:18:23,598 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:18:23,598 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:18:23,598 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:18:23,598 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:18:23,598 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:18:23,599 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2.c_Iteration3_Loop [2019-11-15 23:18:23,599 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:18:23,599 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:18:23,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:18:23,675 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:18:23,675 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:18:23,676 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:23,676 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:23,677 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:23,677 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:23,677 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:23,679 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:18:23,679 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:18:23,683 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:18:23,684 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:18:23,685 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:18:23,685 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:18:23,685 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:18:23,685 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:18:23,685 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:18:23,686 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:18:23,686 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:18:23,690 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:18:23,692 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:18:23,692 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:18:23,693 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:18:23,693 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:18:23,693 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:18:23,694 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-15 23:18:23,694 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:18:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,740 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:23,741 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 [2019-11-15 23:18:23,741 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-15 23:18:23,754 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. [2019-11-15 23:18:23,755 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 [2019-11-15 23:18:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:18:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 23:18:23,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-15 23:18:23,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,756 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:18:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,782 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:23,783 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 [2019-11-15 23:18:23,783 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-15 23:18:23,796 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. [2019-11-15 23:18:23,796 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 [2019-11-15 23:18:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:18:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 23:18:23,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-15 23:18:23,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,797 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:18:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:18:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:18:23,831 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:18:23,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:18:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:18:23,832 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 [2019-11-15 23:18:23,832 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-15 23:18:23,844 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. [2019-11-15 23:18:23,845 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 [2019-11-15 23:18:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 23:18:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 23:18:23,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-15 23:18:23,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-15 23:18:23,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 23:18:23,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:18:23,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-11-15 23:18:23,848 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:18:23,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-11-15 23:18:23,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:18:23,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:18:23,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:18:23,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:18:23,848 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:18:23,848 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:18:23,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:18:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:18:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:18:23,849 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2019-11-15 23:18:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:18:23,850 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-15 23:18:23,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:18:23,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-15 23:18:23,850 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:18:23,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:18:23,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:18:23,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:18:23,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:18:23,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:18:23,851 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:18:23,851 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:18:23,851 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:18:23,851 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:18:23,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:18:23,851 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:18:23,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:18:23,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:18:23 BoogieIcfgContainer [2019-11-15 23:18:23,857 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:18:23,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:18:23,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:18:23,858 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:18:23,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:18:21" (3/4) ... [2019-11-15 23:18:23,862 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:18:23,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:18:23,864 INFO L168 Benchmark]: Toolchain (without parser) took 2349.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 916.2 MB in the end (delta: 28.6 MB). Peak memory consumption was 169.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:18:23,864 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:18:23,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:18:23,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:18:23,866 INFO L168 Benchmark]: Boogie Preprocessor took 12.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:18:23,866 INFO L168 Benchmark]: RCFGBuilder took 172.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:18:23,867 INFO L168 Benchmark]: BuchiAutomizer took 1870.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 916.2 MB in the end (delta: 202.9 MB). Peak memory consumption was 202.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:18:23,867 INFO L168 Benchmark]: Witness Printer took 4.09 ms. Allocated memory is still 1.2 GB. Free memory is still 916.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:18:23,870 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 172.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1870.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 916.2 MB in the end (delta: 202.9 MB). Peak memory consumption was 202.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.09 ms. Allocated memory is still 1.2 GB. Free memory is still 916.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 1.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...