./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.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_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 e334e85dd18553afecc96b27cf49a003304cbca8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:50:40,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:50:40,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:50:40,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:50:40,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:50:40,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:50:40,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:50:40,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:50:40,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:50:40,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:50:40,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:50:40,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:50:40,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:50:40,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:50:40,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:50:40,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:50:40,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:50:40,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:50:40,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:50:40,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:50:40,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:50:40,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:50:40,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:50:40,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:50:40,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:50:40,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:50:40,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:50:40,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:50:40,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:50:40,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:50:40,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:50:40,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:50:40,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:50:40,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:50:40,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:50:40,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:50:40,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:50:40,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:50:40,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:50:40,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:50:40,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:50:40,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:50:40,708 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:50:40,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:50:40,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:50:40,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:50:40,710 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:50:40,710 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:50:40,710 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:50:40,710 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:50:40,710 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:50:40,711 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:50:40,711 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:50:40,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:50:40,711 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:50:40,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:50:40,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:50:40,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:50:40,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:50:40,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:50:40,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:50:40,713 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:50:40,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:50:40,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:50:40,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:50:40,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:50:40,714 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:50:40,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:50:40,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:50:40,724 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:50:40,725 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:50:40,725 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_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-11-15 23:50:40,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:50:40,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:50:40,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:50:40,776 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:50:40,777 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:50:40,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-15 23:50:40,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/data/774591832/c56696d3478d4f4d9a86680c4ed48e3e/FLAG6517187d4 [2019-11-15 23:50:41,263 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:50:41,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-15 23:50:41,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/data/774591832/c56696d3478d4f4d9a86680c4ed48e3e/FLAG6517187d4 [2019-11-15 23:50:41,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/data/774591832/c56696d3478d4f4d9a86680c4ed48e3e [2019-11-15 23:50:41,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:50:41,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:50:41,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:50:41,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:50:41,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:50:41,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:50:41" (1/1) ... [2019-11-15 23:50:41,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a31beaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:41, skipping insertion in model container [2019-11-15 23:50:41,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:50:41" (1/1) ... [2019-11-15 23:50:41,654 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:50:41,672 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:50:41,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:50:41,907 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:50:42,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:50:42,034 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:50:42,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42 WrapperNode [2019-11-15 23:50:42,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:50:42,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:50:42,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:50:42,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:50:42,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:50:42,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:50:42,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:50:42,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:50:42,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... [2019-11-15 23:50:42,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:50:42,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:50:42,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:50:42,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:50:42,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:50:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:50:42,275 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:50:42,275 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 23:50:42,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:50:42 BoogieIcfgContainer [2019-11-15 23:50:42,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:50:42,277 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:50:42,277 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:50:42,280 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:50:42,280 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:50:42,280 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:50:41" (1/3) ... [2019-11-15 23:50:42,281 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f2fda69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:50:42, skipping insertion in model container [2019-11-15 23:50:42,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:50:42,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:50:42" (2/3) ... [2019-11-15 23:50:42,282 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f2fda69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:50:42, skipping insertion in model container [2019-11-15 23:50:42,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:50:42,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:50:42" (3/3) ... [2019-11-15 23:50:42,283 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-15 23:50:42,325 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:50:42,325 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:50:42,326 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:50:42,326 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:50:42,326 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:50:42,326 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:50:42,326 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:50:42,327 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:50:42,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:50:42,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:42,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:50:42,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:50:42,363 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:50:42,363 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:50:42,363 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:50:42,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:50:42,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:42,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:50:42,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:50:42,365 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:50:42,365 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:50:42,372 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2019-11-15 23:50:42,372 INFO L793 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2019-11-15 23:50:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:42,377 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-15 23:50:42,384 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:42,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064801281] [2019-11-15 23:50:42,385 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:42,385 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:42,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:42,477 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:42,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-15 23:50:42,479 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:42,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576476229] [2019-11-15 23:50:42,479 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:42,479 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:42,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:42,493 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:42,495 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-15 23:50:42,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:42,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923677275] [2019-11-15 23:50:42,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:42,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:42,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:42,516 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:42,567 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:42,567 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:42,567 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:42,567 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:42,567 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:50:42,568 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:42,568 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:42,568 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:42,568 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-11-15 23:50:42,568 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:42,568 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:42,586 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 23:50:42,593 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 23:50:42,602 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 23:50:42,616 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 23:50:42,711 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:42,712 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:42,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:42,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:42,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:50:42,732 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_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:42,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:42,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:42,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:50:42,742 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_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:42,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:42,748 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:42,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:50:42,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:42,927 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:50:42,928 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:42,928 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:42,929 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:42,929 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:42,929 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:50:42,929 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:42,929 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:42,929 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:42,929 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-11-15 23:50:42,929 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:42,929 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:42,931 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 23:50:42,942 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 23:50:42,949 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 23:50:42,958 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 23:50:43,037 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:43,042 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:50:43,044 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 23:50:43,046 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:43,046 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:43,046 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:43,047 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:43,051 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:50:43,052 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:50:43,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:50:43,059 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 23:50:43,060 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:43,060 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:43,060 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:43,061 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:43,063 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:50:43,064 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:50:43,076 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:50:43,077 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 23:50:43,078 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:43,078 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:50:43,079 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:43,079 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:43,079 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:43,080 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:50:43,080 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:50:43,096 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:50:43,111 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:50:43,111 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:50:43,113 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:50:43,113 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:50:43,114 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:50:43,115 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-11-15 23:50:43,118 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:50:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:50:43,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,180 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:50:43,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:43,181 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 23:50:43,197 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 23:50:43,198 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-15 23:50:43,244 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-15 23:50:43,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:50:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:50:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-15 23:50:43,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-15 23:50:43,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:43,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:50:43,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:43,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 23:50:43,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:43,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-15 23:50:43,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:43,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-15 23:50:43,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 23:50:43,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 23:50:43,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-15 23:50:43,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:50:43,262 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 23:50:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-15 23:50:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 23:50:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 23:50:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-15 23:50:43,290 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 23:50:43,290 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 23:50:43,290 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:50:43,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-15 23:50:43,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:43,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:50:43,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:50:43,292 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:50:43,292 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:50:43,292 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2019-11-15 23:50:43,293 INFO L793 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2019-11-15 23:50:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:43,293 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-15 23:50:43,293 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:43,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056960576] [2019-11-15 23:50:43,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:43,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:43,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,332 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 23:50:43,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056960576] [2019-11-15 23:50:43,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:50:43,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:50:43,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245000544] [2019-11-15 23:50:43,336 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 23:50:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:43,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-15 23:50:43,336 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:43,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940389389] [2019-11-15 23:50:43,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:43,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:43,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:43,345 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:43,388 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:43,388 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:43,388 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:43,388 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:43,388 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:50:43,388 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:43,389 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:43,389 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:43,389 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-11-15 23:50:43,389 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:43,389 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:43,391 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 23:50:43,395 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 23:50:43,404 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 23:50:43,413 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 23:50:43,495 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:43,495 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:43,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:43,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:43,518 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:50:43,519 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_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:43,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:43,529 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:43,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:50:43,549 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 [2019-11-15 23:50:43,707 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:50:43,709 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:43,709 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:43,709 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:43,709 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:43,709 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:50:43,709 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:43,709 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:43,710 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:43,710 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-11-15 23:50:43,710 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:43,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:43,711 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 23:50:43,714 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 23:50:43,739 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 23:50:43,747 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 23:50:43,814 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:43,815 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:50:43,815 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 23:50:43,816 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:43,816 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:43,816 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:43,816 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:43,818 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:50:43,818 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:50:43,826 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:50:43,827 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 23:50:43,829 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:43,829 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:50:43,829 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:43,829 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:43,829 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:43,833 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:50:43,834 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:50:43,839 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:50:43,845 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:50:43,845 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:50:43,846 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:50:43,846 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:50:43,846 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:50:43,846 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2019-11-15 23:50:43,847 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:50:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:50:43,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,874 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:50:43,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:43,874 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 23:50:43,875 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 23:50:43,875 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 23:50:43,886 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-15 23:50:43,886 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 23:50:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:50:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:50:43,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:50:43,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:43,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 23:50:43,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:43,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-15 23:50:43,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:43,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-15 23:50:43,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:43,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-15 23:50:43,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 23:50:43,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:50:43,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-15 23:50:43,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:50:43,890 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 23:50:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-15 23:50:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-15 23:50:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 23:50:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-15 23:50:43,892 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-15 23:50:43,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:50:43,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:50:43,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:50:43,895 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2019-11-15 23:50:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:43,903 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-11-15 23:50:43,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:50:43,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-11-15 23:50:43,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:43,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2019-11-15 23:50:43,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 23:50:43,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:50:43,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-15 23:50:43,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:50:43,905 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-15 23:50:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-15 23:50:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-15 23:50:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 23:50:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-15 23:50:43,907 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-15 23:50:43,907 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-15 23:50:43,907 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:50:43,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-15 23:50:43,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:50:43,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:50:43,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:50:43,909 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2019-11-15 23:50:43,909 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:50:43,909 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2019-11-15 23:50:43,909 INFO L793 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2019-11-15 23:50:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2019-11-15 23:50:43,909 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:43,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558631842] [2019-11-15 23:50:43,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:43,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:43,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:50:43,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558631842] [2019-11-15 23:50:43,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022652532] [2019-11-15 23:50:43,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:50:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:43,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:50:43,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:50:43,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:50:43,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-11-15 23:50:43,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591413288] [2019-11-15 23:50:43,999 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 23:50:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:43,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-11-15 23:50:43,999 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:43,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389554590] [2019-11-15 23:50:44,000 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,000 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,010 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:44,034 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:44,034 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:44,034 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:44,035 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:44,035 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:50:44,035 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,035 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:44,035 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:44,035 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-11-15 23:50:44,035 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:44,035 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:44,037 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 23:50:44,041 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 23:50:44,052 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 23:50:44,055 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 23:50:44,123 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:44,124 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:50:44,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:44,144 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,150 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:50:44,151 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_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:44,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:44,170 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/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 23:50:44,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:50:44,189 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:50:44,356 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:44,356 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:44,356 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:44,356 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:44,356 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:50:44,356 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,356 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:44,357 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:44,357 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-11-15 23:50:44,357 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:44,357 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:44,358 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 23:50:44,368 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 23:50:44,374 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 23:50:44,381 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 23:50:44,453 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:44,454 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:50:44,454 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 23:50:44,455 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:44,455 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:44,455 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:44,456 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:44,457 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:50:44,458 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:50:44,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:50:44,468 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 23:50:44,469 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:44,469 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:50:44,469 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:44,469 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:44,470 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:44,470 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:50:44,470 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:50:44,475 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:50:44,481 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:50:44,481 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:50:44,482 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:50:44,482 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:50:44,482 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:50:44,482 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-11-15 23:50:44,483 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:50:44,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:44,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:50:44,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:44,521 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:50:44,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:44,522 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 23:50:44,523 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 23:50:44,523 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:50:44,534 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-11-15 23:50:44,535 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 23:50:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:50:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:50:44,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-15 23:50:44,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:44,536 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:50:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:44,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:50:44,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:44,570 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:50:44,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:44,571 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 23:50:44,572 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 23:50:44,572 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:50:44,581 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-11-15 23:50:44,581 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 23:50:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:50:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-15 23:50:44,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-15 23:50:44,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:44,583 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:50:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:44,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:50:44,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:44,620 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:50:44,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:44,620 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 23:50:44,621 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 23:50:44,621 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-15 23:50:44,636 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2019-11-15 23:50:44,638 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 23:50:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:50:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-15 23:50:44,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-15 23:50:44,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:44,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-15 23:50:44,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:44,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-15 23:50:44,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:44,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-11-15 23:50:44,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:50:44,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2019-11-15 23:50:44,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 23:50:44,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:50:44,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-11-15 23:50:44,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:50:44,643 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-15 23:50:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-11-15 23:50:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2019-11-15 23:50:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:50:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-15 23:50:44,645 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 23:50:44,645 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:50:44,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:50:44,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:50:44,649 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 4 states. [2019-11-15 23:50:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:50:44,663 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-15 23:50:44,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:50:44,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-15 23:50:44,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-15 23:50:44,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2019-11-15 23:50:44,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 23:50:44,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 23:50:44,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-15 23:50:44,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:50:44,666 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-15 23:50:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-15 23:50:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-11-15 23:50:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 23:50:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-15 23:50:44,667 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 23:50:44,667 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 23:50:44,667 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:50:44,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-15 23:50:44,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 23:50:44,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:50:44,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:50:44,668 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:50:44,669 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-11-15 23:50:44,669 INFO L791 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2019-11-15 23:50:44,669 INFO L793 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2019-11-15 23:50:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-11-15 23:50:44,673 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:44,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163790270] [2019-11-15 23:50:44,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,707 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2019-11-15 23:50:44,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:44,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946713681] [2019-11-15 23:50:44,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,718 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2019-11-15 23:50:44,719 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:50:44,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390365558] [2019-11-15 23:50:44,719 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,719 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:50:44,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:50:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:50:44,731 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:50:44,788 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:44,789 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:44,789 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:44,789 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:44,789 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:50:44,789 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,789 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:44,789 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:44,790 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-11-15 23:50:44,790 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:44,790 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:44,791 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 23:50:44,801 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 23:50:44,804 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 23:50:44,810 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 23:50:44,892 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:44,892 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:44,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:44,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:50:44,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:44,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:44,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:50:44,934 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:50:44,945 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e17a9ff-b729-40d3-a940-6ca00d6067df/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:44,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:50:44,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:50:45,001 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:50:45,003 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:50:45,003 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:50:45,003 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:50:45,003 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:50:45,003 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:50:45,003 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:50:45,003 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:50:45,003 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:50:45,004 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-11-15 23:50:45,004 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:50:45,004 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:50:45,005 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 23:50:45,017 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 23:50:45,022 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 23:50:45,030 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 23:50:45,094 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:50:45,094 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:50:45,094 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 23:50:45,095 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:45,095 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:50:45,095 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:45,095 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:45,095 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:45,096 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:50:45,096 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:50:45,099 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:50:45,099 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 23:50:45,100 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:50:45,100 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:50:45,100 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:50:45,100 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:50:45,101 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:50:45,101 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:50:45,101 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:50:45,104 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:50:45,106 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:50:45,107 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:50:45,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:50:45,107 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:50:45,107 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:50:45,107 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2019-11-15 23:50:45,108 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:50:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:50:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:45,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:50:45,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:50:45,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:50:45,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:50:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:50:45,174 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 23:50:45,175 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-11-15 23:50:45,189 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2019-11-15 23:50:45,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:50:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-15 23:50:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-15 23:50:45,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 23:50:45,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:45,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-15 23:50:45,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:45,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-15 23:50:45,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:50:45,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2019-11-15 23:50:45,191 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:50:45,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-11-15 23:50:45,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:50:45,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:50:45,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:50:45,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:50:45,192 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:50:45,192 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:50:45,192 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:50:45,193 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 23:50:45,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:50:45,193 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:50:45,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:50:45,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:50:45 BoogieIcfgContainer [2019-11-15 23:50:45,197 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:50:45,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:50:45,198 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:50:45,198 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:50:45,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:50:42" (3/4) ... [2019-11-15 23:50:45,200 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:50:45,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:50:45,202 INFO L168 Benchmark]: Toolchain (without parser) took 3569.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.5 MB in the beginning and 833.6 MB in the end (delta: 112.8 MB). Peak memory consumption was 258.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:45,203 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:50:45,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:45,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.39 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 23:50:45,204 INFO L168 Benchmark]: Boogie Preprocessor took 26.93 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 23:50:45,205 INFO L168 Benchmark]: RCFGBuilder took 173.91 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:45,206 INFO L168 Benchmark]: BuchiAutomizer took 2920.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 833.6 MB in the end (delta: 288.4 MB). Peak memory consumption was 288.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:50:45,206 INFO L168 Benchmark]: Witness Printer took 2.95 ms. Allocated memory is still 1.2 GB. Free memory is still 833.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:50:45,208 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 398.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.39 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 26.93 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 173.91 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2920.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 833.6 MB in the end (delta: 288.4 MB). Peak memory consumption was 288.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.95 ms. Allocated memory is still 1.2 GB. Free memory is still 833.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...