./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 36155f521cfe170e9c03fd915618e68821fe0430 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:52:32,431 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:52:32,432 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:52:32,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:52:32,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:52:32,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:52:32,445 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:52:32,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:52:32,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:52:32,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:52:32,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:52:32,450 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:52:32,451 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:52:32,452 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:52:32,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:52:32,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:52:32,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:52:32,456 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:52:32,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:52:32,460 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:52:32,461 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:52:32,462 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:52:32,464 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:52:32,464 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:52:32,464 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:52:32,465 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:52:32,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:52:32,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:52:32,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:52:32,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:52:32,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:52:32,470 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:52:32,470 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:52:32,470 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:52:32,471 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:52:32,472 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:52:32,472 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 07:52:32,486 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:52:32,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:52:32,487 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:52:32,487 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:52:32,487 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:52:32,488 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 07:52:32,488 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 07:52:32,488 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 07:52:32,488 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 07:52:32,489 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 07:52:32,489 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 07:52:32,489 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:52:32,489 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:52:32,489 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:52:32,489 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:52:32,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 07:52:32,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 07:52:32,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 07:52:32,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:52:32,490 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 07:52:32,490 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 07:52:32,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:52:32,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:52:32,491 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 07:52:32,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:52:32,491 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:52:32,492 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 07:52:32,492 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 07:52:32,493 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 -> 36155f521cfe170e9c03fd915618e68821fe0430 [2018-11-10 07:52:32,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:52:32,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:52:32,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:52:32,536 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:52:32,536 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:52:32,537 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-10 07:52:32,581 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/data/167b7c738/217d4f5647bd4202beb07f4356c1075c/FLAG99fb2e3e1 [2018-11-10 07:52:32,902 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:52:32,902 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-10 07:52:32,906 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/data/167b7c738/217d4f5647bd4202beb07f4356c1075c/FLAG99fb2e3e1 [2018-11-10 07:52:32,915 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/data/167b7c738/217d4f5647bd4202beb07f4356c1075c [2018-11-10 07:52:32,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:52:32,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:52:32,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:52:32,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:52:32,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:52:32,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:52:32" (1/1) ... [2018-11-10 07:52:32,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf90f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:32, skipping insertion in model container [2018-11-10 07:52:32,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:52:32" (1/1) ... [2018-11-10 07:52:32,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:52:32,939 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:52:33,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:52:33,026 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:52:33,034 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:52:33,042 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:52:33,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33 WrapperNode [2018-11-10 07:52:33,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:52:33,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:52:33,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:52:33,043 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:52:33,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:52:33,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:52:33,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:52:33,065 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:52:33,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... [2018-11-10 07:52:33,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:52:33,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:52:33,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:52:33,075 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:52:33,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:52:33,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:52:33,243 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:52:33,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:52:33 BoogieIcfgContainer [2018-11-10 07:52:33,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:52:33,244 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 07:52:33,244 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 07:52:33,247 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 07:52:33,248 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:52:33,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 07:52:32" (1/3) ... [2018-11-10 07:52:33,249 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59c77233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:52:33, skipping insertion in model container [2018-11-10 07:52:33,249 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:52:33,250 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:52:33" (2/3) ... [2018-11-10 07:52:33,250 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59c77233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:52:33, skipping insertion in model container [2018-11-10 07:52:33,250 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:52:33,250 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:52:33" (3/3) ... [2018-11-10 07:52:33,252 INFO L375 chiAutomizerObserver]: Analyzing ICFG Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-10 07:52:33,301 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:52:33,301 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 07:52:33,302 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 07:52:33,302 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 07:52:33,302 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:52:33,302 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:52:33,302 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 07:52:33,302 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:52:33,302 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 07:52:33,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 07:52:33,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:33,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:33,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:33,335 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:52:33,335 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:52:33,335 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 07:52:33,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 07:52:33,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:33,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:33,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:33,336 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:52:33,336 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:52:33,341 INFO L793 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L26-2true [2018-11-10 07:52:33,341 INFO L795 eck$LassoCheckResult]: Loop: 10#L26-2true assume true; 6#L22-1true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L23true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L26-2true [2018-11-10 07:52:33,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 07:52:33,346 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:33,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:33,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:33,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:33,405 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-11-10 07:52:33,405 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:33,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:33,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:33,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-10 07:52:33,419 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:33,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,503 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:33,503 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:33,504 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:33,504 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:33,504 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:52:33,504 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:33,504 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:33,504 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:33,504 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-10 07:52:33,504 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:33,505 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:33,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:33,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:33,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:33,637 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:33,637 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:33,641 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:33,641 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:33,660 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:33,660 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:33,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:33,663 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:33,680 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:33,680 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:33,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:33,683 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:33,702 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:52:33,702 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:33,723 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:52:33,724 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:33,724 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:33,724 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:33,724 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:33,724 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:52:33,724 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:33,724 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:33,724 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:33,725 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-10 07:52:33,725 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:33,725 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:33,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:33,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:33,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:33,786 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:33,789 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:52:33,791 INFO L122 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 [2018-11-10 07:52:33,792 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:33,792 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:33,792 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:33,792 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:33,795 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:33,795 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:33,802 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:33,802 INFO L122 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 [2018-11-10 07:52:33,803 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:33,803 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:33,803 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:33,803 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:33,805 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:33,805 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:33,812 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:33,813 INFO L122 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 [2018-11-10 07:52:33,813 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:33,813 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:52:33,814 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:33,814 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:33,814 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:33,815 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:52:33,815 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:52:33,823 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:52:33,829 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:52:33,829 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:52:33,831 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:52:33,831 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:52:33,831 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:52:33,831 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-10 07:52:33,832 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:52:33,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:33,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:33,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:33,903 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 [2018-11-10 07:52:33,904 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2018-11-10 07:52:33,952 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 42 states and 51 transitions. Complement of second has 8 states. [2018-11-10 07:52:33,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2018-11-10 07:52:33,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-10 07:52:33,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:33,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-10 07:52:33,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:33,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-10 07:52:33,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:33,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 51 transitions. [2018-11-10 07:52:33,958 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 07:52:33,961 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 18 states and 24 transitions. [2018-11-10 07:52:33,962 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 07:52:33,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-10 07:52:33,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-10 07:52:33,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:52:33,962 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-10 07:52:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-10 07:52:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-10 07:52:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 07:52:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-11-10 07:52:33,984 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-10 07:52:33,984 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-10 07:52:33,984 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 07:52:33,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2018-11-10 07:52:33,984 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 07:52:33,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:33,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:33,985 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 07:52:33,985 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:52:33,985 INFO L793 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 96#L26-2 assume true; 110#L22-1 [2018-11-10 07:52:33,985 INFO L795 eck$LassoCheckResult]: Loop: 110#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 106#L23 assume !(main_~q~0 < main_~p~0); 107#L26 assume !(main_~p~0 < main_~q~0); 109#L26-2 assume true; 110#L22-1 [2018-11-10 07:52:33,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:33,985 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-10 07:52:33,986 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:33,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:33,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:33,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:33,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:33,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1298038, now seen corresponding path program 1 times [2018-11-10 07:52:33,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:33,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:33,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:33,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:34,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:52:34,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 07:52:34,020 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 07:52:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 07:52:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 07:52:34,022 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-10 07:52:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:52:34,034 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-11-10 07:52:34,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 07:52:34,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2018-11-10 07:52:34,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:34,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 16 transitions. [2018-11-10 07:52:34,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-10 07:52:34,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-10 07:52:34,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2018-11-10 07:52:34,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:52:34,036 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-10 07:52:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2018-11-10 07:52:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-10 07:52:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-10 07:52:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2018-11-10 07:52:34,038 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-10 07:52:34,038 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-10 07:52:34,038 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 07:52:34,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2018-11-10 07:52:34,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:34,039 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:34,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:34,039 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 07:52:34,039 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:52:34,039 INFO L793 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 133#L26-2 assume true; 136#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 137#L23 assume !(main_~q~0 < main_~p~0); 134#L26 [2018-11-10 07:52:34,040 INFO L795 eck$LassoCheckResult]: Loop: 134#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 135#L26-2 assume true; 142#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 143#L23 assume !(main_~q~0 < main_~p~0); 134#L26 [2018-11-10 07:52:34,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,040 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-10 07:52:34,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:34,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1525496, now seen corresponding path program 1 times [2018-11-10 07:52:34,047 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:34,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,055 INFO L82 PathProgramCache]: Analyzing trace with hash 384046303, now seen corresponding path program 1 times [2018-11-10 07:52:34,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:34,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,094 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:34,094 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:34,094 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:34,094 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:34,094 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:52:34,094 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:34,094 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:34,094 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:34,094 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-10 07:52:34,094 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:34,095 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:34,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,178 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:34,179 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:34,184 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:34,211 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:34,211 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,216 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:34,216 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:34,242 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:34,242 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:34,245 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:34,245 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,263 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:52:34,263 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:34,394 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:52:34,396 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:34,396 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:34,396 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:34,396 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:34,396 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:52:34,396 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:34,396 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:34,396 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:34,396 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-10 07:52:34,396 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:34,396 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:34,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,476 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:34,477 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:52:34,477 INFO L122 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 [2018-11-10 07:52:34,477 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:34,478 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:34,478 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:34,478 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:34,479 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:34,479 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:34,481 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:34,482 INFO L122 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 [2018-11-10 07:52:34,482 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:34,482 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:34,482 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:34,483 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:34,484 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:34,484 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:34,488 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:34,488 INFO L122 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 [2018-11-10 07:52:34,489 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:34,489 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:52:34,489 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:34,489 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:34,489 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:34,490 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:52:34,490 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:52:34,495 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:52:34,500 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:52:34,500 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:52:34,501 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:52:34,501 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:52:34,501 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:52:34,501 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-11-10 07:52:34,501 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:52:34,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:34,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:34,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:34,534 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:52:34,535 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-10 07:52:34,562 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 22 states and 27 transitions. Complement of second has 7 states. [2018-11-10 07:52:34,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 07:52:34,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-10 07:52:34,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:34,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 07:52:34,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:34,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-10 07:52:34,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:34,564 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2018-11-10 07:52:34,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:34,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 22 transitions. [2018-11-10 07:52:34,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-10 07:52:34,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 07:52:34,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2018-11-10 07:52:34,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:52:34,566 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-10 07:52:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2018-11-10 07:52:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-10 07:52:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 07:52:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-11-10 07:52:34,568 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-10 07:52:34,568 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-10 07:52:34,568 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 07:52:34,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2018-11-10 07:52:34,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:34,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:34,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:34,569 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-10 07:52:34,569 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:52:34,569 INFO L793 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 218#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 219#L26-2 assume true; 224#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 225#L23 assume !(main_~q~0 < main_~p~0); 234#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 223#L26-2 assume true; 233#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 232#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 221#L26-2 [2018-11-10 07:52:34,569 INFO L795 eck$LassoCheckResult]: Loop: 221#L26-2 assume true; 231#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 229#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 221#L26-2 [2018-11-10 07:52:34,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 384046301, now seen corresponding path program 1 times [2018-11-10 07:52:34,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:34,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 2 times [2018-11-10 07:52:34,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash -669517300, now seen corresponding path program 2 times [2018-11-10 07:52:34,585 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:34,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,628 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:34,628 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:34,628 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:34,628 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:34,628 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:52:34,628 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:34,628 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:34,629 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:34,629 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-10 07:52:34,629 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:34,629 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:34,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,683 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:34,684 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,686 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:34,686 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:34,702 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:34,702 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,705 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:34,705 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:34,721 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:34,721 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,725 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:34,725 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:34,743 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:52:34,743 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:34,762 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:52:34,763 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:34,764 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:34,764 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:34,764 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:34,764 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:52:34,764 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:34,764 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:34,764 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:34,764 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-10 07:52:34,764 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:34,764 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:34,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,805 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:34,805 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:52:34,805 INFO L122 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 [2018-11-10 07:52:34,806 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:34,806 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:34,806 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:34,806 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:34,807 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:34,807 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:34,810 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:34,810 INFO L122 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 [2018-11-10 07:52:34,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:34,811 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:34,811 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:34,811 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:34,812 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:34,812 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:34,814 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:34,815 INFO L122 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 [2018-11-10 07:52:34,815 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:34,815 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:52:34,815 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:34,815 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:34,815 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:34,816 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:52:34,816 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:52:34,819 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:52:34,821 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:52:34,821 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:52:34,821 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:52:34,822 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:52:34,822 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:52:34,822 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-10 07:52:34,822 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:52:34,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:34,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:34,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:34,858 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 07:52:34,858 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 07:52:34,867 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 39 states and 46 transitions. Complement of second has 7 states. [2018-11-10 07:52:34,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 07:52:34,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 07:52:34,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:34,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-10 07:52:34,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:34,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-10 07:52:34,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:34,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 46 transitions. [2018-11-10 07:52:34,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:34,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 33 states and 40 transitions. [2018-11-10 07:52:34,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-10 07:52:34,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-10 07:52:34,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2018-11-10 07:52:34,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:52:34,871 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-10 07:52:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2018-11-10 07:52:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-11-10 07:52:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 07:52:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 07:52:34,873 INFO L728 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 07:52:34,874 INFO L608 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 07:52:34,874 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 07:52:34,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 37 transitions. [2018-11-10 07:52:34,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:52:34,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:34,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:34,875 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1] [2018-11-10 07:52:34,875 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:52:34,875 INFO L793 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 334#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 335#L26-2 assume true; 355#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 363#L23 assume !(main_~q~0 < main_~p~0); 362#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 361#L26-2 assume true; 360#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 358#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 357#L26-2 assume true; 349#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 345#L23 assume !(main_~q~0 < main_~p~0); 336#L26 [2018-11-10 07:52:34,875 INFO L795 eck$LassoCheckResult]: Loop: 336#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 337#L26-2 assume true; 340#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 341#L23 assume !(main_~q~0 < main_~p~0); 336#L26 [2018-11-10 07:52:34,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash -669517298, now seen corresponding path program 3 times [2018-11-10 07:52:34,876 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:34,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1525496, now seen corresponding path program 2 times [2018-11-10 07:52:34,884 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:34,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1202097531, now seen corresponding path program 4 times [2018-11-10 07:52:34,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:34,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:34,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:34,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:34,941 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:34,941 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:34,941 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:34,941 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:34,941 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:52:34,942 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:34,942 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:34,942 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:34,942 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-10 07:52:34,942 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:34,942 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:34,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:34,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,008 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:35,009 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:35,010 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:35,010 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:35,028 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:52:35,028 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:35,149 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:52:35,151 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:35,151 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:35,151 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:35,151 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:35,151 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:52:35,151 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:35,151 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:35,151 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:35,151 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-10 07:52:35,151 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:35,152 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:35,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,197 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:35,197 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:52:35,198 INFO L122 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 [2018-11-10 07:52:35,198 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:35,199 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:52:35,199 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:35,199 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:35,199 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:35,200 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:52:35,200 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:52:35,203 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:52:35,206 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:52:35,206 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:52:35,206 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:52:35,206 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:52:35,207 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:52:35,207 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-11-10 07:52:35,207 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:52:35,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:35,237 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:52:35,237 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-10 07:52:35,251 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 39 states and 48 transitions. Complement of second has 7 states. [2018-11-10 07:52:35,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 07:52:35,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-10 07:52:35,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,252 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:52:35,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:35,280 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:52:35,280 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-10 07:52:35,296 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 36 states and 45 transitions. Complement of second has 7 states. [2018-11-10 07:52:35,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-10 07:52:35,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-10 07:52:35,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,298 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:52:35,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:35,323 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:52:35,323 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-10 07:52:35,335 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 47 states and 58 transitions. Complement of second has 6 states. [2018-11-10 07:52:35,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 07:52:35,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-10 07:52:35,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-10 07:52:35,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 8 letters. [2018-11-10 07:52:35,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 58 transitions. [2018-11-10 07:52:35,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-10 07:52:35,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 35 states and 43 transitions. [2018-11-10 07:52:35,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-10 07:52:35,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-10 07:52:35,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 43 transitions. [2018-11-10 07:52:35,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:52:35,339 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-10 07:52:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 43 transitions. [2018-11-10 07:52:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2018-11-10 07:52:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 07:52:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-10 07:52:35,340 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-10 07:52:35,340 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-10 07:52:35,340 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 07:52:35,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-11-10 07:52:35,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-10 07:52:35,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:35,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:35,341 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-10 07:52:35,341 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1] [2018-11-10 07:52:35,341 INFO L793 eck$LassoCheckResult]: Stem: 683#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 674#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 675#L26-2 assume true; 681#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 682#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 685#L26-2 assume true; 679#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 680#L23 assume !(main_~q~0 < main_~p~0); 684#L26 [2018-11-10 07:52:35,341 INFO L795 eck$LassoCheckResult]: Loop: 684#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 693#L26-2 assume true; 692#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 687#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 689#L26-2 assume true; 691#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 690#L23 assume !(main_~q~0 < main_~p~0); 684#L26 [2018-11-10 07:52:35,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-11-10 07:52:35,341 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:35,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:35,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:35,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1798642347, now seen corresponding path program 1 times [2018-11-10 07:52:35,347 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:35,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:35,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:35,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash 300244977, now seen corresponding path program 5 times [2018-11-10 07:52:35,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:35,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:35,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:52:35,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,408 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:35,408 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:35,408 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:35,408 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:35,408 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:52:35,409 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:35,409 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:35,409 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:35,409 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-10 07:52:35,409 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:35,409 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:35,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,499 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:35,499 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:35,501 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:35,501 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:35,526 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:52:35,526 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:35,762 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:52:35,764 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:35,764 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:35,764 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:35,764 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:35,764 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:52:35,764 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:35,764 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:35,764 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:35,764 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-10 07:52:35,764 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:35,764 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:35,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,833 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:35,834 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:52:35,834 INFO L122 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 [2018-11-10 07:52:35,834 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:35,835 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:52:35,835 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:35,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:35,835 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:35,836 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:52:35,836 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:52:35,840 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:52:35,844 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:52:35,844 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:52:35,845 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:52:35,845 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:52:35,845 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:52:35,845 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-10 07:52:35,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:52:35,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:35,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:35,885 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-10 07:52:35,885 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 5 states. [2018-11-10 07:52:35,912 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 64 states and 81 transitions. Complement of second has 8 states. [2018-11-10 07:52:35,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 07:52:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-10 07:52:35,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 8 letters. Loop has 7 letters. [2018-11-10 07:52:35,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 7 letters. [2018-11-10 07:52:35,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 8 letters. Loop has 14 letters. [2018-11-10 07:52:35,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:35,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 81 transitions. [2018-11-10 07:52:35,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 07:52:35,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 41 states and 50 transitions. [2018-11-10 07:52:35,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-10 07:52:35,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-10 07:52:35,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 50 transitions. [2018-11-10 07:52:35,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:52:35,917 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-10 07:52:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 50 transitions. [2018-11-10 07:52:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2018-11-10 07:52:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 07:52:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-11-10 07:52:35,919 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-10 07:52:35,920 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-10 07:52:35,920 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-10 07:52:35,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 42 transitions. [2018-11-10 07:52:35,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 07:52:35,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:52:35,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:52:35,921 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1, 1, 1] [2018-11-10 07:52:35,921 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 07:52:35,921 INFO L793 eck$LassoCheckResult]: Stem: 843#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 834#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 835#L26-2 assume true; 847#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 864#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 862#L26-2 assume true; 861#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 851#L23 assume !(main_~q~0 < main_~p~0); 852#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 860#L26-2 assume true; 859#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 858#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 857#L26-2 assume true; 856#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 854#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 844#L26-2 [2018-11-10 07:52:35,921 INFO L795 eck$LassoCheckResult]: Loop: 844#L26-2 assume true; 839#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 840#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 844#L26-2 [2018-11-10 07:52:35,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,922 INFO L82 PathProgramCache]: Analyzing trace with hash 300244975, now seen corresponding path program 6 times [2018-11-10 07:52:35,922 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:35,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:35,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:35,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 3 times [2018-11-10 07:52:35,931 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:35,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:35,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,932 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:35,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1818821190, now seen corresponding path program 7 times [2018-11-10 07:52:35,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:52:35,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:52:35,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:52:35,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:52:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:52:35,967 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:35,967 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:35,967 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:35,968 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:35,968 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:52:35,968 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:35,968 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:35,968 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:35,968 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-10 07:52:35,968 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:35,968 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:35,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:35,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:36,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:36,049 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:36,049 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:36,052 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:36,052 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:36,083 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:36,083 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:36,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:36,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:36,121 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:52:36,121 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:36,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:52:36,126 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0fa94bdf-9dd0-4661-87aa-56180b0160a1/bin-2019/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 [2018-11-10 07:52:36,149 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:52:36,149 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:52:36,184 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:52:36,188 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:52:36,188 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:52:36,188 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:52:36,189 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:52:36,189 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:52:36,189 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:52:36,189 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:52:36,189 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:52:36,189 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-10 07:52:36,189 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:52:36,189 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:52:36,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:36,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:36,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:52:36,234 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:52:36,234 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:52:36,235 INFO L122 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 [2018-11-10 07:52:36,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:36,236 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:36,236 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:36,236 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:36,237 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:52:36,237 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:52:36,239 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:52:36,240 INFO L122 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 [2018-11-10 07:52:36,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:52:36,241 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:52:36,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:52:36,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:52:36,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:52:36,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:52:36,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:52:36,246 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:52:36,247 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:52:36,248 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:52:36,248 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:52:36,248 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:52:36,248 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:52:36,248 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-10 07:52:36,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:52:36,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:36,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:36,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:36,289 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 [2018-11-10 07:52:36,289 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-10 07:52:36,299 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 47 states and 55 transitions. Complement of second has 7 states. [2018-11-10 07:52:36,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 07:52:36,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-10 07:52:36,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:36,300 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:52:36,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:36,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:36,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:36,326 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 07:52:36,326 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-10 07:52:36,334 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 47 states and 55 transitions. Complement of second has 7 states. [2018-11-10 07:52:36,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 07:52:36,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-10 07:52:36,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:36,336 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:52:36,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:52:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:36,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:52:36,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:52:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:52:36,360 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 07:52:36,360 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-10 07:52:36,369 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 54 states and 65 transitions. Complement of second has 6 states. [2018-11-10 07:52:36,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:52:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:52:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 07:52:36,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-10 07:52:36,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:36,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-10 07:52:36,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:36,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 15 letters. Loop has 6 letters. [2018-11-10 07:52:36,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:52:36,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 65 transitions. [2018-11-10 07:52:36,371 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:52:36,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 0 states and 0 transitions. [2018-11-10 07:52:36,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 07:52:36,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 07:52:36,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 07:52:36,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 07:52:36,372 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:52:36,372 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:52:36,372 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:52:36,372 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-10 07:52:36,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 07:52:36,372 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:52:36,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 07:52:36,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 07:52:36 BoogieIcfgContainer [2018-11-10 07:52:36,380 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 07:52:36,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:52:36,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:52:36,380 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:52:36,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:52:33" (3/4) ... [2018-11-10 07:52:36,386 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 07:52:36,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:52:36,387 INFO L168 Benchmark]: Toolchain (without parser) took 3469.72 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 956.5 MB in the beginning and 1.1 GB in the end (delta: -136.5 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:52:36,388 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:52:36,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.65 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:52:36,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.41 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:52:36,390 INFO L168 Benchmark]: Boogie Preprocessor took 10.72 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:52:36,390 INFO L168 Benchmark]: RCFGBuilder took 168.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -206.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:52:36,391 INFO L168 Benchmark]: BuchiAutomizer took 3135.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.0 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:52:36,391 INFO L168 Benchmark]: Witness Printer took 6.10 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:52:36,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.65 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.41 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.72 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 168.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -206.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3135.72 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.0 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.10 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 4 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 34 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/3 HoareTripleCheckerStatistics: 83 SDtfs, 95 SDslu, 30 SDs, 0 SdLazy, 119 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf93 smp90 dnf100 smp100 tf107 neg98 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...