./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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 7c08193784b646afd298f73ae6296b7af2e0cac1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:35,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:35,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:35,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:35,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:35,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:35,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:35,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:35,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:35,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:35,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:35,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:35,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:35,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:35,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:35,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:35,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:35,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:35,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:35,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:35,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:35,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:35,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:35,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:35,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:35,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:35,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:35,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:35,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:35,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:35,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:35,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:35,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:35,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:35,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:35,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:35,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:35,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:35,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:35,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:35,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:35,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:59:35,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:35,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:35,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:35,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:35,228 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:35,228 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:59:35,228 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:59:35,228 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:59:35,229 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:59:35,229 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:59:35,229 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:59:35,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:35,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:35,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:35,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:35,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:59:35,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:59:35,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:59:35,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:35,232 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:59:35,232 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:35,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:59:35,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:35,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:35,233 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:59:35,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:35,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:35,233 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:59:35,234 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:59:35,235 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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2019-10-22 08:59:35,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:35,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:35,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:35,273 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:35,273 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:35,274 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-10-22 08:59:35,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/data/48ab622c6/9a63ff80b741463d9d4ce532a653bc5b/FLAG2cbb22877 [2019-10-22 08:59:35,705 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:35,707 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-10-22 08:59:35,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/data/48ab622c6/9a63ff80b741463d9d4ce532a653bc5b/FLAG2cbb22877 [2019-10-22 08:59:36,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/data/48ab622c6/9a63ff80b741463d9d4ce532a653bc5b [2019-10-22 08:59:36,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:36,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:36,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:36,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:36,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:36,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105cc365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36, skipping insertion in model container [2019-10-22 08:59:36,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:36,117 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:36,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:36,247 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:36,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:36,349 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:36,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36 WrapperNode [2019-10-22 08:59:36,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:36,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:36,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:36,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:36,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:36,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:36,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:36,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:36,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... [2019-10-22 08:59:36,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:36,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:36,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:36,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:36,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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 [2019-10-22 08:59:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:36,570 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:36,571 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:59:36,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:36 BoogieIcfgContainer [2019-10-22 08:59:36,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:36,572 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:59:36,572 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:59:36,575 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:59:36,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:36,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:59:36" (1/3) ... [2019-10-22 08:59:36,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1dd52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:36, skipping insertion in model container [2019-10-22 08:59:36,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:36,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:36" (2/3) ... [2019-10-22 08:59:36,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1dd52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:36, skipping insertion in model container [2019-10-22 08:59:36,578 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:36,578 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:36" (3/3) ... [2019-10-22 08:59:36,579 INFO L371 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-10-22 08:59:36,622 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:59:36,622 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:59:36,622 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:59:36,622 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:36,622 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:36,622 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:59:36,623 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:36,623 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:59:36,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:59:36,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:36,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:36,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:36,660 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:59:36,660 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:36,660 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:59:36,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:59:36,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:59:36,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:36,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:36,661 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:59:36,661 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:36,668 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L19-2true [2019-10-22 08:59:36,668 INFO L793 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 9#L21-2true assume !(main_~j~0 <= main_~i~0); 8#L21-3true main_~i~0 := 1 + main_~i~0; 6#L19-2true [2019-10-22 08:59:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,674 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:59:36,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047234807] [2019-10-22 08:59:36,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,769 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,770 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-10-22 08:59:36,770 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312051832] [2019-10-22 08:59:36,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,785 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-10-22 08:59:36,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:36,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76634933] [2019-10-22 08:59:36,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:36,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:36,805 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:36,868 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:36,869 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:36,869 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:36,869 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:36,870 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:36,870 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:36,870 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:36,870 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:36,870 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-10-22 08:59:36,870 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:36,871 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:36,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:36,997 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:36,998 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:37,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:37,006 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:37,014 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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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 [2019-10-22 08:59:37,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:37,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:37,055 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:37,055 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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:37,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:37,070 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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) [2019-10-22 08:59:37,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:37,086 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,182 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:37,184 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:37,184 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:37,184 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:37,184 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:37,184 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:37,184 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,185 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:37,185 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:37,185 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-10-22 08:59:37,185 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:37,185 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:37,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:37,282 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:37,284 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 [2019-10-22 08:59:37,285 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:37,286 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:37,286 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:37,286 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:37,294 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:37,294 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:37,305 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:37,305 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 [2019-10-22 08:59:37,309 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:37,310 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:37,310 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:37,310 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:37,312 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:37,312 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:37,321 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:37,324 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 [2019-10-22 08:59:37,325 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:37,325 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:37,326 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:37,326 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:37,326 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:37,327 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:37,327 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:37,341 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:37,346 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:37,346 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:37,348 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:37,348 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:37,349 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:37,349 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:59:37,352 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:37,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:37,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:37,399 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:59:37,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:37,451 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 [2019-10-22 08:59:37,452 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-10-22 08:59:37,525 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 30 states and 48 transitions. Complement of second has 9 states. [2019-10-22 08:59:37,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-10-22 08:59:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:59:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2019-10-22 08:59:37,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 08:59:37,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:37,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:59:37,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:37,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 08:59:37,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:37,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 48 transitions. [2019-10-22 08:59:37,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:59:37,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 18 transitions. [2019-10-22 08:59:37,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:59:37,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:59:37,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2019-10-22 08:59:37,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:37,540 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-10-22 08:59:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2019-10-22 08:59:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-10-22 08:59:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:59:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-10-22 08:59:37,566 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-10-22 08:59:37,566 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-10-22 08:59:37,566 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:59:37,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2019-10-22 08:59:37,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:59:37,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:37,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:37,567 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:59:37,567 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:59:37,567 INFO L791 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 83#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-10-22 08:59:37,567 INFO L793 eck$LassoCheckResult]: Loop: 85#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 91#L21-2 assume !(main_~j~0 <= main_~i~0); 88#L21-3 main_~i~0 := 1 + main_~i~0; 84#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-10-22 08:59:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:59:37,568 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:37,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493098762] [2019-10-22 08:59:37,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:37,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:37,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:37,577 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1506610, now seen corresponding path program 1 times [2019-10-22 08:59:37,577 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:37,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130598824] [2019-10-22 08:59:37,578 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:37,578 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:37,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:37,587 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2019-10-22 08:59:37,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:37,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901907123] [2019-10-22 08:59:37,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:37,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:37,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:37,600 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:37,638 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:37,638 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:37,638 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:37,638 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:37,638 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:37,638 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,638 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:37,639 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:37,639 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-10-22 08:59:37,639 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:37,639 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:37,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,706 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:37,706 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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) [2019-10-22 08:59:37,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:37,715 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:37,720 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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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) [2019-10-22 08:59:37,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:37,732 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:37,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:37,741 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:37,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:37,846 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:37,848 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:37,848 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:37,849 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:37,849 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:37,849 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:37,849 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:37,849 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:37,849 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:37,849 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-10-22 08:59:37,849 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:37,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:37,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:37,914 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:37,915 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:37,915 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 [2019-10-22 08:59:37,916 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:37,916 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:37,916 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:37,917 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:37,918 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:37,918 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:37,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:37,923 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 [2019-10-22 08:59:37,924 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:37,924 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:37,924 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:37,924 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:37,926 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:37,926 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:37,931 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:37,932 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 [2019-10-22 08:59:37,932 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:37,932 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:37,932 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:37,933 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:37,933 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:37,933 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:37,934 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:37,941 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:37,948 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:37,948 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:37,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:37,949 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:37,949 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:37,949 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:59:37,949 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:37,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:37,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:37,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:37,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:59:37,999 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:59:37,999 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-10-22 08:59:38,033 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 22 states and 31 transitions. Complement of second has 6 states. [2019-10-22 08:59:38,034 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 [2019-10-22 08:59:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:59:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 08:59:38,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-10-22 08:59:38,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-10-22 08:59:38,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-10-22 08:59:38,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2019-10-22 08:59:38,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:38,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 22 transitions. [2019-10-22 08:59:38,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:59:38,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:59:38,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2019-10-22 08:59:38,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:38,039 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-10-22 08:59:38,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2019-10-22 08:59:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-10-22 08:59:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 08:59:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2019-10-22 08:59:38,040 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-10-22 08:59:38,040 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-10-22 08:59:38,041 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:59:38,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2019-10-22 08:59:38,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:38,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:38,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:38,043 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:59:38,043 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:38,043 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 159#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-10-22 08:59:38,043 INFO L793 eck$LassoCheckResult]: Loop: 163#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-10-22 08:59:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-10-22 08:59:38,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:38,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427625566] [2019-10-22 08:59:38,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,056 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-10-22 08:59:38,057 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:38,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112185569] [2019-10-22 08:59:38,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,063 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,064 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-10-22 08:59:38,064 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:38,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792900197] [2019-10-22 08:59:38,064 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,064 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,093 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:38,105 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:38,105 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:38,105 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:38,105 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:38,105 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:38,106 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:38,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:38,106 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:38,106 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-10-22 08:59:38,106 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:38,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:38,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,168 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:38,168 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:38,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:38,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:38,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:38,180 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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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) [2019-10-22 08:59:38,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:38,188 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/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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) [2019-10-22 08:59:38,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:38,200 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 [2019-10-22 08:59:38,340 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:38,342 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:38,343 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:38,343 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:38,343 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:38,343 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:38,343 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:38,343 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:38,343 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:38,343 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-10-22 08:59:38,343 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:38,344 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:38,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,401 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:38,401 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:38,401 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 [2019-10-22 08:59:38,402 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,402 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,402 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,402 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:38,404 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:59:38,404 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:59:38,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:38,422 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 [2019-10-22 08:59:38,423 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,423 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:38,423 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,423 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,423 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:38,424 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:38,424 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:38,427 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:38,430 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:38,430 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:59:38,431 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:38,431 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:38,431 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:38,431 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-10-22 08:59:38,432 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,456 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:38,457 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 [2019-10-22 08:59:38,457 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10 Second operand 2 states. [2019-10-22 08:59:38,467 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 26 states and 38 transitions. Complement of second has 5 states. [2019-10-22 08:59:38,468 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 [2019-10-22 08:59:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 08:59:38,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 08:59:38,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2019-10-22 08:59:38,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:59:38,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 38 transitions. [2019-10-22 08:59:38,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:38,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 22 states and 33 transitions. [2019-10-22 08:59:38,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:59:38,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:59:38,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-10-22 08:59:38,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:38,472 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-10-22 08:59:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-10-22 08:59:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-10-22 08:59:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:59:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2019-10-22 08:59:38,474 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-10-22 08:59:38,474 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-10-22 08:59:38,474 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:59:38,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2019-10-22 08:59:38,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:38,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:38,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:38,477 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-10-22 08:59:38,477 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:38,477 INFO L791 eck$LassoCheckResult]: Stem: 229#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 230#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 232#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 236#L21-2 assume !(main_~j~0 <= main_~i~0); 245#L21-3 main_~i~0 := 1 + main_~i~0; 243#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 239#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-10-22 08:59:38,477 INFO L793 eck$LassoCheckResult]: Loop: 238#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-10-22 08:59:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 2 times [2019-10-22 08:59:38,478 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:38,478 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714299304] [2019-10-22 08:59:38,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,491 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-10-22 08:59:38,493 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:38,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874063570] [2019-10-22 08:59:38,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,501 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,503 INFO L82 PathProgramCache]: Analyzing trace with hash 780807227, now seen corresponding path program 3 times [2019-10-22 08:59:38,504 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:38,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117932755] [2019-10-22 08:59:38,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:38,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:38,522 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:38,539 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:38,539 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:38,539 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:38,539 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:38,539 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:38,540 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:38,540 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:38,540 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:38,540 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-10-22 08:59:38,540 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:38,540 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:38,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,584 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:38,584 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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 [2019-10-22 08:59:38,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:38,587 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd796b5b-6a16-4e23-afd5-36fd47a4ca0f/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 [2019-10-22 08:59:38,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:38,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:38,695 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:38,696 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:38,696 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:38,696 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:38,696 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:38,696 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:38,697 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:38,697 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:38,697 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:38,697 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-10-22 08:59:38,697 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:38,697 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:38,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:38,747 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:38,748 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:38,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:38,749 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:38,749 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:38,749 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:38,749 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:38,749 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:38,750 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:38,750 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:38,753 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:38,756 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:38,756 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:59:38,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:38,757 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:38,757 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:38,757 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-10-22 08:59:38,757 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,785 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:38,786 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 [2019-10-22 08:59:38,786 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:59:38,796 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-10-22 08:59:38,797 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 [2019-10-22 08:59:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 08:59:38,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-10-22 08:59:38,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,798 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,822 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:38,823 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 [2019-10-22 08:59:38,823 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:59:38,832 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-10-22 08:59:38,833 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 [2019-10-22 08:59:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 08:59:38,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-10-22 08:59:38,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,834 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:38,862 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:38,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:38,863 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 [2019-10-22 08:59:38,863 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:59:38,875 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 4 states. [2019-10-22 08:59:38,876 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 [2019-10-22 08:59:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:59:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-10-22 08:59:38,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 1 letters. [2019-10-22 08:59:38,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-10-22 08:59:38,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2019-10-22 08:59:38,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:38,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2019-10-22 08:59:38,878 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:38,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-10-22 08:59:38,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:59:38,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:59:38,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:59:38,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:59:38,879 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:38,879 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:38,879 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:38,879 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:59:38,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:38,879 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:38,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:59:38,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:59:38 BoogieIcfgContainer [2019-10-22 08:59:38,885 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:59:38,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:38,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:38,886 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:38,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:36" (3/4) ... [2019-10-22 08:59:38,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:59:38,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:38,892 INFO L168 Benchmark]: Toolchain (without parser) took 2803.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 944.7 MB in the beginning and 855.0 MB in the end (delta: 89.7 MB). Peak memory consumption was 205.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:38,892 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:38,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:38,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:38,894 INFO L168 Benchmark]: Boogie Preprocessor took 18.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:38,894 INFO L168 Benchmark]: RCFGBuilder took 171.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:38,894 INFO L168 Benchmark]: BuchiAutomizer took 2313.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 855.0 MB in the end (delta: 236.7 MB). Peak memory consumption was 236.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:38,895 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 1.1 GB. Free memory is still 855.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:38,897 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 171.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2313.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 855.0 MB in the end (delta: 236.7 MB). Peak memory consumption was 236.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.39 ms. Allocated memory is still 1.1 GB. Free memory is still 855.0 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. 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 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 32 SDslu, 9 SDs, 0 SdLazy, 50 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax191 hnf99 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...