./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/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 cf6b3a74fd4060a216a178ad3d11a901c2ac840d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:22:41,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:22:41,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:22:41,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:22:41,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:22:41,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:22:41,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:22:41,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:22:41,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:22:41,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:22:41,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:22:41,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:22:41,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:22:41,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:22:41,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:22:41,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:22:41,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:22:41,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:22:41,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:22:41,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:22:41,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:22:41,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:22:41,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:22:41,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:22:41,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:22:41,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:22:41,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:22:41,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:22:41,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:22:41,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:22:41,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:22:41,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:22:41,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:22:41,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:22:41,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:22:41,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:22:41,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:22:41,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:22:41,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:22:41,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:22:41,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:22:41,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 20:22:41,399 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:22:41,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:22:41,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:22:41,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:22:41,402 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:22:41,402 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 20:22:41,402 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 20:22:41,402 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 20:22:41,403 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 20:22:41,403 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 20:22:41,403 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 20:22:41,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:22:41,404 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:22:41,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:22:41,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:22:41,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 20:22:41,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 20:22:41,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 20:22:41,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:22:41,405 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 20:22:41,406 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:22:41,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 20:22:41,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:22:41,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:22:41,407 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 20:22:41,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:22:41,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:22:41,408 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 20:22:41,409 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 20:22:41,409 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/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 -> cf6b3a74fd4060a216a178ad3d11a901c2ac840d [2019-11-15 20:22:41,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:22:41,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:22:41,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:22:41,463 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:22:41,464 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:22:41,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2019-11-15 20:22:41,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/data/4640ab88a/6dbccb12ddb24ae9968bf6a8e8d0fcab/FLAG542f53dff [2019-11-15 20:22:41,954 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:22:41,955 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2019-11-15 20:22:41,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/data/4640ab88a/6dbccb12ddb24ae9968bf6a8e8d0fcab/FLAG542f53dff [2019-11-15 20:22:42,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/data/4640ab88a/6dbccb12ddb24ae9968bf6a8e8d0fcab [2019-11-15 20:22:42,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:22:42,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:22:42,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:22:42,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:22:42,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:22:42,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3539856c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42, skipping insertion in model container [2019-11-15 20:22:42,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,349 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:22:42,371 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:22:42,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:22:42,555 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:22:42,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:22:42,670 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:22:42,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42 WrapperNode [2019-11-15 20:22:42,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:22:42,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:22:42,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:22:42,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:22:42,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:22:42,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:22:42,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:22:42,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:22:42,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... [2019-11-15 20:22:42,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:22:42,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:22:42,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:22:42,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:22:42,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:22:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:22:42,964 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:22:42,964 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 20:22:42,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:22:42 BoogieIcfgContainer [2019-11-15 20:22:42,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:22:42,966 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 20:22:42,966 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 20:22:42,970 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 20:22:42,971 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:22:42,971 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 08:22:42" (1/3) ... [2019-11-15 20:22:42,972 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78c79400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:22:42, skipping insertion in model container [2019-11-15 20:22:42,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:22:42,972 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:22:42" (2/3) ... [2019-11-15 20:22:42,973 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78c79400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:22:42, skipping insertion in model container [2019-11-15 20:22:42,973 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:22:42,973 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:22:42" (3/3) ... [2019-11-15 20:22:42,974 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume.c [2019-11-15 20:22:43,055 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 20:22:43,056 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 20:22:43,056 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 20:22:43,056 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:22:43,056 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:22:43,057 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 20:22:43,057 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:22:43,069 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 20:22:43,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-15 20:22:43,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:43,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:22:43,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:22:43,122 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 20:22:43,122 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:22:43,122 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 20:22:43,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-15 20:22:43,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:43,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:22:43,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:22:43,125 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 20:22:43,125 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:22:43,134 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 3#L12-2true [2019-11-15 20:22:43,134 INFO L793 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(0 == main_~x~0); 10#L13true assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 8#L13-2true main_~c~0 := 1 + main_~c~0; 3#L12-2true [2019-11-15 20:22:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:43,143 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-15 20:22:43,153 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:43,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494155243] [2019-11-15 20:22:43,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:43,154 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:43,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:43,264 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:43,266 INFO L82 PathProgramCache]: Analyzing trace with hash 42800, now seen corresponding path program 1 times [2019-11-15 20:22:43,266 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:43,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343033382] [2019-11-15 20:22:43,267 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:43,267 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:43,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:43,284 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:43,287 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 1 times [2019-11-15 20:22:43,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:43,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359515148] [2019-11-15 20:22:43,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:43,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:43,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:43,310 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:43,404 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:43,405 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:43,406 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:43,406 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:43,406 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:43,407 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:43,407 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:43,407 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:43,407 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration1_Loop [2019-11-15 20:22:43,408 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:43,408 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:43,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:43,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:43,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:43,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:43,641 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:43,642 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/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) [2019-11-15 20:22:43,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:43,655 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 [2019-11-15 20:22:43,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:43,667 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:43,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:43,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:43,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:43,689 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/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) [2019-11-15 20:22:43,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:43,707 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/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:43,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:43,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:43,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:43,744 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:43,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:43,752 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:43,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:43,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:44,027 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:22:44,030 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:44,031 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:44,031 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:44,031 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:44,031 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:22:44,031 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:44,031 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:44,031 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:44,032 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration1_Loop [2019-11-15 20:22:44,032 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:44,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:44,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,224 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:44,230 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:22:44,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:44,234 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:44,235 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:44,235 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:44,235 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:44,240 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:44,241 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:44,249 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:44,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:44,251 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:44,251 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:44,252 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:44,252 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:44,255 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:44,255 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:44,266 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:44,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:44,268 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:44,268 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:44,269 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:44,269 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:44,269 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:44,270 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:44,270 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:44,287 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:44,288 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:44,289 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:44,290 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:44,290 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:44,290 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 20:22:44,290 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:44,292 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 20:22:44,293 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:44,312 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:22:44,331 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 20:22:44,331 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 20:22:44,333 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:22:44,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:22:44,334 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:22:44,335 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-15 20:22:44,338 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:22:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:44,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:22:44,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:44,412 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:22:44,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:22:44,467 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 20:22:44,468 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2019-11-15 20:22:44,512 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 29 states and 36 transitions. Complement of second has 5 states. [2019-11-15 20:22:44,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 20:22:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 20:22:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2019-11-15 20:22:44,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-15 20:22:44,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:44,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 20:22:44,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:44,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-15 20:22:44,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:44,522 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2019-11-15 20:22:44,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:44,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2019-11-15 20:22:44,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 20:22:44,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 20:22:44,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2019-11-15 20:22:44,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:22:44,534 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-15 20:22:44,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2019-11-15 20:22:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-11-15 20:22:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 20:22:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-15 20:22:44,565 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 20:22:44,565 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 20:22:44,565 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 20:22:44,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-15 20:22:44,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:44,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:22:44,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:22:44,567 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 20:22:44,567 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:22:44,567 INFO L791 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 82#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 83#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2019-11-15 20:22:44,568 INFO L793 eck$LassoCheckResult]: Loop: 78#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 84#L13-2 main_~c~0 := 1 + main_~c~0; 77#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2019-11-15 20:22:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:44,568 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-15 20:22:44,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:44,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508953677] [2019-11-15 20:22:44,569 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:44,569 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:44,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:44,580 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:44,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:44,581 INFO L82 PathProgramCache]: Analyzing trace with hash 47722, now seen corresponding path program 1 times [2019-11-15 20:22:44,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:44,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65955999] [2019-11-15 20:22:44,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:44,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:44,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:44,590 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:44,591 INFO L82 PathProgramCache]: Analyzing trace with hash 920232130, now seen corresponding path program 1 times [2019-11-15 20:22:44,591 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:44,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729997480] [2019-11-15 20:22:44,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:44,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:44,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:44,605 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:44,635 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:44,635 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:44,635 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:44,635 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:44,636 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:44,636 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:44,636 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:44,636 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:44,636 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Loop [2019-11-15 20:22:44,636 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:44,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:44,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:44,781 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:44,781 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:44,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:44,792 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:44,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:44,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:44,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:44,813 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/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 [2019-11-15 20:22:44,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:44,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:44,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:44,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:44,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:44,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:44,973 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:44,974 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/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:44,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:44,988 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:45,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:45,015 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] [2019-11-15 20:22:45,051 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:45,051 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:45,051 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:45,051 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:45,052 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:45,052 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,052 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:45,052 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:45,052 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Lasso [2019-11-15 20:22:45,052 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:45,052 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:45,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,247 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:45,247 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/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) [2019-11-15 20:22:45,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:45,262 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,271 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,271 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:45,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:45,289 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,289 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:45,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:45,310 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:45,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:45,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:45,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,351 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:45,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:45,391 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,391 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:45,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:45,403 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:45,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_4=1} Honda state: {v_rep~unnamed0~0~true_4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:45,415 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:45,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:45,440 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:22:45,671 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:45,671 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:45,671 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:45,671 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:45,672 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:22:45,672 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:45,672 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:45,672 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:45,672 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Lasso [2019-11-15 20:22:45,672 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:45,673 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:45,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:45,856 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:45,856 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:22:45,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,858 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,858 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:45,858 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,859 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:45,859 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,859 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:45,860 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:45,860 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:45,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,862 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,862 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:45,862 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,862 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:45,863 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,863 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:45,863 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:45,864 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:45,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,865 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,866 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:45,866 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,866 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:45,866 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,867 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:45,867 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:45,868 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:45,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,869 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,869 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,870 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:45,870 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,872 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:45,872 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:45,877 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:45,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,878 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,879 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,879 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:45,879 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,882 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:45,882 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:45,926 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:45,927 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,928 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,928 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,928 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:45,928 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,931 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:45,931 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:45,938 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:45,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:45,940 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:45,940 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:45,940 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 20:22:45,940 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:45,952 INFO L400 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-15 20:22:45,952 INFO L401 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-11-15 20:22:46,125 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:22:46,178 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-15 20:22:46,179 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 4 variables to zero. [2019-11-15 20:22:46,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:22:46,190 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-15 20:22:46,193 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:22:46,193 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 - 1 >= 0] [2019-11-15 20:22:46,197 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-15 20:22:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:46,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 20:22:46,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:46,288 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:22:46,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:22:46,308 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-15 20:22:46,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-15 20:22:46,360 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 21 transitions. Complement of second has 5 states. [2019-11-15 20:22:46,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 0 non-accepting loop states 2 accepting loop states [2019-11-15 20:22:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 20:22:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-11-15 20:22:46,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-15 20:22:46,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:46,362 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 20:22:46,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:46,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 20:22:46,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:46,431 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:22:46,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:22:46,457 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-15 20:22:46,457 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-15 20:22:46,514 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 21 states and 26 transitions. Complement of second has 6 states. [2019-11-15 20:22:46,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 20:22:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 20:22:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-15 20:22:46,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-15 20:22:46,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:46,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 20:22:46,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:46,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-15 20:22:46,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:46,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2019-11-15 20:22:46,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:46,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2019-11-15 20:22:46,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 20:22:46,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 20:22:46,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2019-11-15 20:22:46,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:22:46,519 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-15 20:22:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2019-11-15 20:22:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-11-15 20:22:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 20:22:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-15 20:22:46,521 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-15 20:22:46,521 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-15 20:22:46,521 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 20:22:46,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-11-15 20:22:46,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:46,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:22:46,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:22:46,523 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 20:22:46,523 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:22:46,523 INFO L791 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 208#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 204#L12-2 assume !!!(0 == main_~x~0); 205#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 213#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2019-11-15 20:22:46,523 INFO L793 eck$LassoCheckResult]: Loop: 210#L12-2 assume !!!(0 == main_~x~0); 212#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 209#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2019-11-15 20:22:46,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:46,524 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 2 times [2019-11-15 20:22:46,524 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:46,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349786772] [2019-11-15 20:22:46,524 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:46,524 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:46,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:46,553 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 2 times [2019-11-15 20:22:46,557 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:46,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999109942] [2019-11-15 20:22:46,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:46,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:46,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:46,568 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash -422032510, now seen corresponding path program 1 times [2019-11-15 20:22:46,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:46,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726071625] [2019-11-15 20:22:46,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:46,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:46,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:46,603 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:46,633 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:46,634 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:46,634 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:46,634 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:46,634 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:46,634 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:46,634 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:46,634 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:46,634 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Loop [2019-11-15 20:22:46,635 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:46,635 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:46,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,743 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:46,743 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:46,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:46,751 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:46,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:46,768 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:46,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:46,789 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:46,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:46,806 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:46,813 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:46,814 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:46,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:46,824 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:46,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:46,839 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:46,869 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:46,869 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [10, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:46,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:46,880 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:46,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:46,887 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-11-15 20:22:46,940 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:46,940 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:46,940 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:46,941 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:46,941 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:46,941 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:46,941 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:46,941 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:46,941 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Lasso [2019-11-15 20:22:46,941 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:46,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:46,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:46,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,139 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:47,139 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:47,152 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:47,159 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:47,174 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:47,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:47,194 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,202 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:47,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:47,211 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,217 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:47,217 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:47,224 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:47,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:47,255 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:47,255 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:47,264 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:47,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:47,276 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,344 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:22:47,345 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:47,345 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:47,346 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:47,346 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:47,346 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:22:47,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:47,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:47,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:47,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Lasso [2019-11-15 20:22:47,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:47,346 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:47,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:47,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:47,534 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:22:47,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:47,535 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:47,535 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:47,535 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:47,535 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:47,535 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:47,536 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:47,536 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:47,536 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:47,537 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:47,537 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:47,537 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:47,537 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:47,537 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:47,537 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:47,538 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:47,538 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:47,539 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:47,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:47,539 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:47,540 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:22:47,540 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:47,540 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:47,540 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:47,540 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:22:47,541 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:22:47,541 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:47,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:47,542 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:47,542 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:47,542 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:47,543 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:47,544 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:47,544 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:47,554 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:47,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:47,555 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:47,556 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:47,556 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:22:47,556 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:47,557 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 20:22:47,558 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 20:22:47,560 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:22:47,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:22:47,561 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:22:47,562 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:22:47,562 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 20:22:47,562 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:22:47,568 INFO L400 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-15 20:22:47,568 INFO L401 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-11-15 20:22:47,634 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:22:47,680 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-15 20:22:47,680 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2019-11-15 20:22:47,681 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:22:47,683 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-15 20:22:47,683 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:22:47,684 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2019-11-15 20:22:47,686 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-15 20:22:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:47,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:22:47,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:47,776 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:22:47,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:22:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:22:47,817 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2019-11-15 20:22:47,817 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2019-11-15 20:22:47,908 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 28 states and 35 transitions. Complement of second has 10 states. [2019-11-15 20:22:47,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 2 accepting loop states [2019-11-15 20:22:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 20:22:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2019-11-15 20:22:47,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 20:22:47,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:47,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-15 20:22:47,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:47,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-15 20:22:47,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:22:47,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-15 20:22:47,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:47,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 24 transitions. [2019-11-15 20:22:47,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 20:22:47,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 20:22:47,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2019-11-15 20:22:47,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:22:47,914 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-15 20:22:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2019-11-15 20:22:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2019-11-15 20:22:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 20:22:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-15 20:22:47,916 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-15 20:22:47,917 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-15 20:22:47,917 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 20:22:47,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-11-15 20:22:47,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:47,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:22:47,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:22:47,919 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-15 20:22:47,919 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:22:47,919 INFO L791 eck$LassoCheckResult]: Stem: 315#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 316#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 311#L12-2 assume !!!(0 == main_~x~0); 312#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 319#L13-2 main_~c~0 := 1 + main_~c~0; 313#L12-2 assume !!!(0 == main_~x~0); 314#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 321#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2019-11-15 20:22:47,919 INFO L793 eck$LassoCheckResult]: Loop: 318#L12-2 assume !!!(0 == main_~x~0); 320#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 317#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2019-11-15 20:22:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash -420185530, now seen corresponding path program 2 times [2019-11-15 20:22:47,920 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:47,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317082095] [2019-11-15 20:22:47,921 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:47,921 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:47,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:22:47,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317082095] [2019-11-15 20:22:47,968 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:22:47,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:22:47,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168156166] [2019-11-15 20:22:47,971 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:22:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 3 times [2019-11-15 20:22:47,972 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:47,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600565256] [2019-11-15 20:22:47,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:47,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:47,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:47,985 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:48,009 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:48,009 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:48,009 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:48,009 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:48,009 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:48,010 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,010 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:48,010 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:48,010 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration4_Loop [2019-11-15 20:22:48,010 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:48,010 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:48,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,133 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:48,133 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:48,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,143 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:48,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:48,157 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,182 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,191 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 20:22:48,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,211 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:48,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,236 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,236 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] [2019-11-15 20:22:48,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:22:48,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:22:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:22:48,242 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 20:22:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:22:48,258 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-15 20:22:48,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:22:48,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2019-11-15 20:22:48,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:48,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 14 transitions. [2019-11-15 20:22:48,259 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 20:22:48,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 20:22:48,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-11-15 20:22:48,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:22:48,260 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-15 20:22:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-11-15 20:22:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-11-15 20:22:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 20:22:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-15 20:22:48,261 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-15 20:22:48,261 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-15 20:22:48,261 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 20:22:48,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2019-11-15 20:22:48,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:22:48,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:22:48,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:22:48,263 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2019-11-15 20:22:48,263 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:22:48,264 INFO L791 eck$LassoCheckResult]: Stem: 348#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 349#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 344#L12-2 assume !!!(0 == main_~x~0); 345#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 352#L13-2 main_~c~0 := 1 + main_~c~0; 346#L12-2 assume !!!(0 == main_~x~0); 347#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 354#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2019-11-15 20:22:48,264 INFO L793 eck$LassoCheckResult]: Loop: 351#L12-2 assume !!!(0 == main_~x~0); 353#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 350#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2019-11-15 20:22:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:48,264 INFO L82 PathProgramCache]: Analyzing trace with hash -422032572, now seen corresponding path program 3 times [2019-11-15 20:22:48,264 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:48,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294775711] [2019-11-15 20:22:48,264 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:48,264 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:48,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:22:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:22:48,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294775711] [2019-11-15 20:22:48,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:22:48,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:22:48,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746353264] [2019-11-15 20:22:48,284 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:22:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:22:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 4 times [2019-11-15 20:22:48,285 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:22:48,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163048539] [2019-11-15 20:22:48,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:48,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:22:48,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:22:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:22:48,291 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:22:48,317 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:22:48,317 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:22:48,317 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:22:48,317 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:22:48,318 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:22:48,318 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,318 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:22:48,318 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:22:48,318 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration5_Loop [2019-11-15 20:22:48,318 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:22:48,318 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:22:48,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:22:48,433 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:22:48,433 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,449 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:48,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,517 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,517 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Honda state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [11, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,562 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:22:48,568 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6391190b-58c3-41dd-a71e-aa580c766730/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:22:48,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:22:48,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:22:48,599 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:22:48,599 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] [2019-11-15 20:22:48,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:22:48,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:22:48,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:22:48,602 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 20:22:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:22:48,613 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-11-15 20:22:48,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:22:48,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 6 transitions. [2019-11-15 20:22:48,615 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:22:48,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2019-11-15 20:22:48,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 20:22:48,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 20:22:48,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 20:22:48,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 20:22:48,615 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:22:48,615 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:22:48,616 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:22:48,616 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-15 20:22:48,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:22:48,616 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:22:48,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 20:22:48,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 08:22:48 BoogieIcfgContainer [2019-11-15 20:22:48,624 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 20:22:48,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:22:48,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:22:48,624 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:22:48,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:22:42" (3/4) ... [2019-11-15 20:22:48,629 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:22:48,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:22:48,631 INFO L168 Benchmark]: Toolchain (without parser) took 6300.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -228.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:22:48,632 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:22:48,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:22:48,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:22:48,633 INFO L168 Benchmark]: Boogie Preprocessor took 22.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:22:48,634 INFO L168 Benchmark]: RCFGBuilder took 232.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:22:48,635 INFO L168 Benchmark]: BuchiAutomizer took 5657.69 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -54.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:22:48,635 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:22:48,645 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 232.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5657.69 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -54.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.5s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 4.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 3. Nontrivial modules had stage [2, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 23 SDslu, 12 SDs, 0 SdLazy, 43 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax154 hnf97 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf95 smp100 dnf157 smp100 tf103 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 253ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 11 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...