./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-numeric/twisted_true-termination_true-no-overflow.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_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 56facc094037ea8aa088ee9a4faafddcfe652feb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:09:26,466 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:09:26,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:09:26,476 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:09:26,476 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:09:26,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:09:26,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:09:26,479 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:09:26,481 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:09:26,481 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:09:26,482 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:09:26,482 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:09:26,483 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:09:26,484 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:09:26,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:09:26,485 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:09:26,486 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:09:26,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:09:26,488 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:09:26,490 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:09:26,491 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:09:26,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:09:26,493 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:09:26,494 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:09:26,494 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:09:26,494 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:09:26,495 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:09:26,496 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:09:26,497 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:09:26,498 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:09:26,498 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:09:26,498 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:09:26,499 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:09:26,499 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:09:26,500 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:09:26,500 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:09:26,500 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:09:26,512 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:09:26,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:09:26,514 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:09:26,514 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:09:26,514 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:09:26,514 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:09:26,514 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:09:26,514 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:09:26,515 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:09:26,515 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:09:26,515 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:09:26,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:09:26,515 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:09:26,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:09:26,516 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:09:26,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:09:26,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:09:26,517 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:09:26,517 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:09:26,517 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:09:26,517 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:09:26,518 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:09:26,518 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_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 -> 56facc094037ea8aa088ee9a4faafddcfe652feb [2018-10-27 06:09:26,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:09:26,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:09:26,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:09:26,561 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:09:26,561 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:09:26,562 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/twisted_true-termination_true-no-overflow.c [2018-10-27 06:09:26,602 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/data/4eb58e269/f31db3fdd3614ff7a6059544e7cff919/FLAG854e1ef70 [2018-10-27 06:09:26,964 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:09:26,965 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/sv-benchmarks/c/termination-numeric/twisted_true-termination_true-no-overflow.c [2018-10-27 06:09:26,969 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/data/4eb58e269/f31db3fdd3614ff7a6059544e7cff919/FLAG854e1ef70 [2018-10-27 06:09:26,979 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/bin-2019/uautomizer/data/4eb58e269/f31db3fdd3614ff7a6059544e7cff919 [2018-10-27 06:09:26,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:09:26,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:09:26,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:26,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:09:26,987 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:09:26,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:26" (1/1) ... [2018-10-27 06:09:26,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b90395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:26, skipping insertion in model container [2018-10-27 06:09:26,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:26" (1/1) ... [2018-10-27 06:09:26,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:09:27,014 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:09:27,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:27,145 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:09:27,157 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:27,168 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:09:27,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27 WrapperNode [2018-10-27 06:09:27,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:27,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:27,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:09:27,170 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:09:27,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:27,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:09:27,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:09:27,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:09:27,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:09:27,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:09:27,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:09:27,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:09:27,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 [2018-10-27 06:09:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:09:27,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:09:27,595 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:09:27,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:27 BoogieIcfgContainer [2018-10-27 06:09:27,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:09:27,596 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:09:27,596 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:09:27,599 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:09:27,600 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:27,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:09:26" (1/3) ... [2018-10-27 06:09:27,601 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75bb73f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:27, skipping insertion in model container [2018-10-27 06:09:27,601 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:27,601 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27" (2/3) ... [2018-10-27 06:09:27,602 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75bb73f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:27, skipping insertion in model container [2018-10-27 06:09:27,602 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:27,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:27" (3/3) ... [2018-10-27 06:09:27,603 INFO L375 chiAutomizerObserver]: Analyzing ICFG twisted_true-termination_true-no-overflow.c [2018-10-27 06:09:27,651 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:09:27,652 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:09:27,652 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:09:27,652 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:09:27,652 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:09:27,652 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:09:27,652 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:09:27,652 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:09:27,652 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:09:27,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-10-27 06:09:27,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:09:27,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:27,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:27,700 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:27,700 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:09:27,701 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:09:27,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-10-27 06:09:27,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:09:27,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:27,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:27,703 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:27,703 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:09:27,710 INFO L793 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;assume { :begin_inline_f } true;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 5#L18true [2018-10-27 06:09:27,711 INFO L795 eck$LassoCheckResult]: Loop: 5#L18true assume !true; 13#L13true assume true; 4#L16true assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := f_#t~post1 + 1;havoc f_#t~post1; 3#L15true assume !((if f_~i~0 < 0 && f_~i~0 % 2 != 0 then f_~i~0 % 2 - 2 else f_~i~0 % 2) != 0); 5#L18true [2018-10-27 06:09:27,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:27,717 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:09:27,718 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:27,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:27,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:27,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1512586, now seen corresponding path program 1 times [2018-10-27 06:09:27,809 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:27,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:27,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:27,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:27,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:27,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-27 06:09:27,832 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:09:27,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:09:27,846 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2018-10-27 06:09:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:27,851 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-10-27 06:09:27,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:09:27,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2018-10-27 06:09:27,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:09:27,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 11 transitions. [2018-10-27 06:09:27,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-10-27 06:09:27,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:09:27,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-10-27 06:09:27,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:09:27,860 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-10-27 06:09:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-10-27 06:09:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-27 06:09:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-27 06:09:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-10-27 06:09:27,883 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-10-27 06:09:27,884 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-10-27 06:09:27,884 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:09:27,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-10-27 06:09:27,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:09:27,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:27,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:27,885 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:27,885 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:27,885 INFO L793 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 34#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;assume { :begin_inline_f } true;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 35#L18 [2018-10-27 06:09:27,885 INFO L795 eck$LassoCheckResult]: Loop: 35#L18 assume true; 39#L9 assume !(f_~i~0 < f_~k); 40#L13 assume true; 37#L16 assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := f_#t~post1 + 1;havoc f_#t~post1; 36#L15 assume !((if f_~i~0 < 0 && f_~i~0 % 2 != 0 then f_~i~0 % 2 - 2 else f_~i~0 % 2) != 0); 35#L18 [2018-10-27 06:09:27,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:09:27,885 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:27,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:27,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:27,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:27,907 INFO L82 PathProgramCache]: Analyzing trace with hash 34491223, now seen corresponding path program 1 times [2018-10-27 06:09:27,907 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:27,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:27,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:27,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:27,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1805930709, now seen corresponding path program 1 times [2018-10-27 06:09:27,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:27,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:27,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:27,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:28,077 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 06:09:28,140 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:28,141 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:28,142 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:28,142 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:28,142 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:28,142 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:28,142 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:28,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:28,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:09:28,143 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:28,143 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:28,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:28,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:28,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:28,621 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-10-27 06:09:28,752 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:09:28,758 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:28,759 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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) [2018-10-27 06:09:28,769 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:28,769 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:28,778 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:28,779 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post1=0} Honda state: {ULTIMATE.start_f_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 [2018-10-27 06:09:28,799 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:28,799 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 [2018-10-27 06:09:28,821 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:28,821 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:28,999 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:29,001 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:29,001 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:29,001 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:29,001 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:29,001 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:29,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:29,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:29,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:29,002 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:09:29,002 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:29,002 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:29,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,260 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:09:29,261 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:29,265 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:29,266 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 [2018-10-27 06:09:29,269 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:29,269 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:29,269 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:29,270 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:29,270 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:29,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:29,272 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:29,278 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:29,283 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:09:29,283 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:29,285 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:29,285 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:29,286 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:29,286 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0, ULTIMATE.start_f_~l) = -1*ULTIMATE.start_f_~j~0 + 1*ULTIMATE.start_f_~l Supporting invariants [] [2018-10-27 06:09:29,288 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:29,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:29,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:29,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:29,523 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 [2018-10-27 06:09:29,524 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-10-27 06:09:29,544 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2018-10-27 06:09:29,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:09:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-10-27 06:09:29,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 5 letters. [2018-10-27 06:09:29,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:29,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 5 letters. [2018-10-27 06:09:29,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:29,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 10 letters. [2018-10-27 06:09:29,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:29,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2018-10-27 06:09:29,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:09:29,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2018-10-27 06:09:29,552 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-10-27 06:09:29,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:09:29,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2018-10-27 06:09:29,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:29,553 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2018-10-27 06:09:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2018-10-27 06:09:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-10-27 06:09:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 06:09:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-10-27 06:09:29,554 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-10-27 06:09:29,555 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-10-27 06:09:29,555 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:09:29,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2018-10-27 06:09:29,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:09:29,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:29,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:29,555 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:09:29,555 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:09:29,556 INFO L793 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 99#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;assume { :begin_inline_f } true;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 100#L18 assume true; 106#L9 [2018-10-27 06:09:29,556 INFO L795 eck$LassoCheckResult]: Loop: 106#L9 assume !!(f_~i~0 < f_~k);f_#t~post0 := f_~i~0;f_~i~0 := f_#t~post0 + 1;havoc f_#t~post0; 109#L8 assume (if f_~i~0 < 0 && f_~i~0 % 2 != 0 then f_~i~0 % 2 - 2 else f_~i~0 % 2) != 0; 106#L9 [2018-10-27 06:09:29,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-10-27 06:09:29,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:29,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1348, now seen corresponding path program 1 times [2018-10-27 06:09:29,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:29,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,576 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-10-27 06:09:29,576 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:29,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:29,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:29,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,645 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:29,645 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:29,645 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:29,645 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:29,645 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:29,646 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:29,646 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:29,646 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:29,646 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:09:29,646 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:29,646 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:29,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,979 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 20 [2018-10-27 06:09:30,133 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-27 06:09:30,133 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:30,134 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 [2018-10-27 06:09:30,142 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:30,142 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:30,144 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:30,145 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0=0} Honda state: {ULTIMATE.start_f_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 [2018-10-27 06:09:30,164 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:30,164 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a0d73c4f-9db4-4af0-9801-1444b37e435d/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 [2018-10-27 06:09:30,185 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:30,185 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:30,406 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:30,407 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:30,407 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:30,407 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:30,408 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:30,408 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:30,408 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:30,408 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:30,408 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:30,408 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:09:30,408 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:30,408 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:30,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:30,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:30,491 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:30,491 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:30,492 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 [2018-10-27 06:09:30,492 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:30,492 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:30,492 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:30,492 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:30,493 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:30,493 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:30,493 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:30,500 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:30,507 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:09:30,509 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:30,509 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:30,510 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:30,510 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:30,510 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~i~0, ULTIMATE.start_f_~k) = -1*ULTIMATE.start_f_~i~0 + 1*ULTIMATE.start_f_~k Supporting invariants [] [2018-10-27 06:09:30,510 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:30,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:30,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:30,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:30,573 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 [2018-10-27 06:09:30,573 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-10-27 06:09:30,597 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 32 transitions. Complement of second has 4 states. [2018-10-27 06:09:30,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:09:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:09:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-10-27 06:09:30,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2018-10-27 06:09:30,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:30,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 2 letters. [2018-10-27 06:09:30,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:30,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2018-10-27 06:09:30,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:30,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2018-10-27 06:09:30,599 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:30,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-10-27 06:09:30,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:09:30,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:09:30,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:09:30,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:09:30,600 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:30,600 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:30,600 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:30,600 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:09:30,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:09:30,601 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:30,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:09:30,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:09:30 BoogieIcfgContainer [2018-10-27 06:09:30,610 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:09:30,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:09:30,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:09:30,610 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:09:30,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:27" (3/4) ... [2018-10-27 06:09:30,613 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:09:30,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:09:30,614 INFO L168 Benchmark]: Toolchain (without parser) took 3631.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 961.2 MB in the beginning and 1.0 GB in the end (delta: -80.8 MB). Peak memory consumption was 113.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:30,615 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:30,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.44 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:30,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.00 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:30,616 INFO L168 Benchmark]: Boogie Preprocessor took 16.77 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:30,617 INFO L168 Benchmark]: RCFGBuilder took 382.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -231.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:30,617 INFO L168 Benchmark]: BuchiAutomizer took 3014.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 137.0 MB). Peak memory consumption was 137.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:30,618 INFO L168 Benchmark]: Witness Printer took 3.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:30,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.44 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 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 26.00 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.77 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 382.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -231.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3014.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 137.0 MB). Peak memory consumption was 137.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * j + l and consists of 3 locations. One deterministic module has affine ranking function -1 * i + k and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 19 SDslu, 11 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital33 mio100 ax100 hnf98 lsp88 ukn100 mio100 lsp100 div221 bol100 ite118 ukn100 eq148 hnf61 smp43 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...