./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 2291f924dd9adb1923bbd2b3119647838e71c665 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:40:19,427 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:40:19,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:40:19,434 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:40:19,434 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:40:19,435 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:40:19,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:40:19,436 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:40:19,437 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:40:19,437 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:40:19,438 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:40:19,438 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:40:19,439 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:40:19,440 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:40:19,440 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:40:19,441 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:40:19,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:40:19,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:40:19,444 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:40:19,445 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:40:19,445 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:40:19,446 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:40:19,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:40:19,447 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:40:19,447 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:40:19,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:40:19,448 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:40:19,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:40:19,449 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:40:19,449 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:40:19,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:40:19,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:40:19,450 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:40:19,450 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:40:19,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:40:19,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:40:19,452 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 09:40:19,461 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:40:19,461 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:40:19,462 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:40:19,462 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:40:19,462 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:40:19,462 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:40:19,462 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:40:19,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:40:19,463 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:40:19,464 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:40:19,464 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:40:19,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:40:19,465 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:40:19,465 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:40:19,465 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:40:19,465 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:40:19,466 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:40:19,466 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_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2018-11-18 09:40:19,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:40:19,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:40:19,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:40:19,502 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:40:19,502 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:40:19,503 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Pure2Phase_true-termination_true-valid-memsafety.c [2018-11-18 09:40:19,548 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/data/733f18536/61d3be9cd00245fa89982c9b47d37aa0/FLAG046ab0332 [2018-11-18 09:40:19,943 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:40:19,943 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/sv-benchmarks/c/termination-crafted/Pure2Phase_true-termination_true-valid-memsafety.c [2018-11-18 09:40:19,947 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/data/733f18536/61d3be9cd00245fa89982c9b47d37aa0/FLAG046ab0332 [2018-11-18 09:40:19,958 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/bin-2019/uautomizer/data/733f18536/61d3be9cd00245fa89982c9b47d37aa0 [2018-11-18 09:40:19,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:40:19,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:40:19,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:40:19,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:40:19,965 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:40:19,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:40:19" (1/1) ... [2018-11-18 09:40:19,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411459c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:19, skipping insertion in model container [2018-11-18 09:40:19,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:40:19" (1/1) ... [2018-11-18 09:40:19,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:40:19,984 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:40:20,080 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:40:20,082 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:40:20,091 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:40:20,099 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:40:20,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20 WrapperNode [2018-11-18 09:40:20,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:40:20,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:40:20,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:40:20,100 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:40:20,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:40:20,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:40:20,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:40:20,118 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:40:20,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... [2018-11-18 09:40:20,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:40:20,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:40:20,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:40:20,129 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:40:20,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:40:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:40:20,285 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:40:20,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:20 BoogieIcfgContainer [2018-11-18 09:40:20,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:40:20,286 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:40:20,286 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:40:20,289 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:40:20,289 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:40:20,289 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:40:19" (1/3) ... [2018-11-18 09:40:20,290 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45ef8193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:40:20, skipping insertion in model container [2018-11-18 09:40:20,290 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:40:20,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:20" (2/3) ... [2018-11-18 09:40:20,290 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45ef8193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:40:20, skipping insertion in model container [2018-11-18 09:40:20,290 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:40:20,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:20" (3/3) ... [2018-11-18 09:40:20,292 INFO L375 chiAutomizerObserver]: Analyzing ICFG Pure2Phase_true-termination_true-valid-memsafety.c [2018-11-18 09:40:20,336 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:40:20,336 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:40:20,337 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:40:20,337 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:40:20,337 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:40:20,337 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:40:20,337 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:40:20,337 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:40:20,337 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:40:20,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 09:40:20,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 09:40:20,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:40:20,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:40:20,367 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 09:40:20,367 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:40:20,367 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:40:20,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 09:40:20,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 09:40:20,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:40:20,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:40:20,369 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 09:40:20,369 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:40:20,376 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 14#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 4#L21true assume !!(main_~z~0 <= 1073741823); 9#L24-2true [2018-11-18 09:40:20,376 INFO L796 eck$LassoCheckResult]: Loop: 9#L24-2true assume true; 5#L22-1true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 11#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 9#L24-2true [2018-11-18 09:40:20,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,381 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2018-11-18 09:40:20,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:20,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:20,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:20,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash 45881, now seen corresponding path program 1 times [2018-11-18 09:40:20,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:20,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:20,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:20,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1806906866, now seen corresponding path program 1 times [2018-11-18 09:40:20,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:20,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:20,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:20,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,500 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:20,501 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:20,501 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:20,501 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:20,501 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:40:20,501 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:20,502 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:20,502 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:20,502 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-18 09:40:20,502 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:20,502 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:20,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,600 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:20,600 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:20,604 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:20,604 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:20,622 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:40:20,622 INFO L448 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_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:20,625 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:20,625 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:20,641 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:40:20,641 INFO L448 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_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:20,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:20,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:20,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:40:20,663 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:20,692 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:40:20,696 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:20,696 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:20,696 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:20,696 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:20,697 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:40:20,697 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:20,697 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:20,697 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:20,697 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-18 09:40:20,697 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:20,697 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:20,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:20,812 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:20,815 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:40:20,816 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 [2018-11-18 09:40:20,817 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:20,818 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:20,818 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:20,818 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:20,821 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:40:20,822 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:40:20,828 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:40:20,828 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 [2018-11-18 09:40:20,829 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:20,829 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:40:20,829 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:20,829 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:20,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:20,830 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:40:20,830 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:40:20,835 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:40:20,838 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:40:20,838 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:40:20,839 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:40:20,839 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:40:20,839 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:40:20,840 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2018-11-18 09:40:20,841 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:40:20,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:20,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:20,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:40:20,907 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 [2018-11-18 09:40:20,908 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 4 states. [2018-11-18 09:40:20,938 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 4 states. Result 33 states and 40 transitions. Complement of second has 8 states. [2018-11-18 09:40:20,938 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 [2018-11-18 09:40:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:40:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-18 09:40:20,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-18 09:40:20,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:20,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-18 09:40:20,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:20,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-18 09:40:20,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:20,943 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2018-11-18 09:40:20,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 09:40:20,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 17 transitions. [2018-11-18 09:40:20,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 09:40:20,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 09:40:20,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2018-11-18 09:40:20,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:40:20,948 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-18 09:40:20,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2018-11-18 09:40:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 09:40:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 09:40:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-11-18 09:40:20,966 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-18 09:40:20,966 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-18 09:40:20,966 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:40:20,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2018-11-18 09:40:20,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 09:40:20,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:40:20,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:40:20,966 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:40:20,967 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:40:20,967 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 94#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 95#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 100#L21 assume !!(main_~z~0 <= 1073741823); 101#L24-2 assume true; 106#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 107#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 103#L27 [2018-11-18 09:40:20,967 INFO L796 eck$LassoCheckResult]: Loop: 103#L27 assume !!(main_~z~0 <= 1073741823); 104#L24-2 assume true; 96#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 97#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 103#L27 [2018-11-18 09:40:20,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1806906859, now seen corresponding path program 1 times [2018-11-18 09:40:20,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:20,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:20,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:20,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1833334, now seen corresponding path program 1 times [2018-11-18 09:40:20,974 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:20,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:20,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:20,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1376660064, now seen corresponding path program 1 times [2018-11-18 09:40:20,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:20,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:20,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:20,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,015 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:21,015 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:21,015 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:21,015 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:21,016 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:40:21,016 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:21,016 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:21,016 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:21,016 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-18 09:40:21,016 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:21,016 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:21,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,072 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:21,072 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,081 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:21,081 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:21,097 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:40:21,097 INFO L448 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_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,099 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:21,099 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:21,115 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:40:21,115 INFO L448 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_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,118 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:21,118 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,135 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:40:21,135 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:21,166 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:40:21,168 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:21,168 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:21,168 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:21,168 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:21,168 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:40:21,168 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:21,168 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:21,168 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:21,168 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-18 09:40:21,168 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:21,168 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:21,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,270 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:21,270 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:40:21,270 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 [2018-11-18 09:40:21,271 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:21,272 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:21,272 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:21,272 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:21,273 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:40:21,274 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:40:21,278 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:40:21,278 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 [2018-11-18 09:40:21,278 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:21,279 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:21,279 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:21,279 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:21,280 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:40:21,280 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:40:21,283 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:40:21,283 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 [2018-11-18 09:40:21,284 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:21,284 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:40:21,284 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:21,284 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:21,284 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:21,285 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:40:21,285 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:40:21,287 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:40:21,289 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:40:21,289 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:40:21,289 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:40:21,290 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:40:21,290 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:40:21,290 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 09:40:21,290 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:40:21,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:40:21,318 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 [2018-11-18 09:40:21,318 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-18 09:40:21,333 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 22 states and 27 transitions. Complement of second has 6 states. [2018-11-18 09:40:21,334 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 [2018-11-18 09:40:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:40:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-18 09:40:21,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 09:40:21,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 09:40:21,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 09:40:21,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2018-11-18 09:40:21,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:40:21,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 27 transitions. [2018-11-18 09:40:21,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-18 09:40:21,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 09:40:21,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 27 transitions. [2018-11-18 09:40:21,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:40:21,337 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2018-11-18 09:40:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 27 transitions. [2018-11-18 09:40:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-18 09:40:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 09:40:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2018-11-18 09:40:21,339 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-11-18 09:40:21,339 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-11-18 09:40:21,339 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:40:21,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2018-11-18 09:40:21,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:40:21,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:40:21,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:40:21,340 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:40:21,340 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:40:21,340 INFO L794 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 186#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 187#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 192#L21 assume !!(main_~z~0 <= 1073741823); 193#L24-2 assume true; 202#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 201#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 195#L27 assume !!(main_~z~0 <= 1073741823); 197#L24-2 [2018-11-18 09:40:21,340 INFO L796 eck$LassoCheckResult]: Loop: 197#L24-2 assume true; 188#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 189#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 197#L24-2 [2018-11-18 09:40:21,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,340 INFO L82 PathProgramCache]: Analyzing trace with hash 179537811, now seen corresponding path program 2 times [2018-11-18 09:40:21,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:21,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:21,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:21,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 45881, now seen corresponding path program 2 times [2018-11-18 09:40:21,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:21,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:21,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:40:21,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1376660071, now seen corresponding path program 1 times [2018-11-18 09:40:21,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:21,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:21,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:40:21,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,374 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:21,374 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:21,374 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:21,374 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:21,374 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:40:21,374 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:21,374 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:21,374 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:21,375 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-18 09:40:21,375 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:21,375 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:21,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,425 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:21,426 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,427 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:21,427 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:21,442 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:40:21,442 INFO L448 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_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,445 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:21,445 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,461 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:40:21,461 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:21,477 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:40:21,478 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:21,478 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:21,478 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:21,479 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:21,479 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:40:21,479 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:21,479 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:21,479 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:21,479 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-18 09:40:21,479 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:21,479 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:21,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,517 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:21,517 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:40:21,518 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 [2018-11-18 09:40:21,518 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:21,519 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:21,519 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:21,519 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:21,520 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:40:21,520 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:40:21,524 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:40:21,524 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 [2018-11-18 09:40:21,525 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:21,525 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:40:21,525 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:21,525 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:21,525 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:21,527 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:40:21,527 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:40:21,530 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:40:21,532 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:40:21,532 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:40:21,533 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:40:21,533 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:40:21,533 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:40:21,533 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2018-11-18 09:40:21,533 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:40:21,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:40:21,567 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 [2018-11-18 09:40:21,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 09:40:21,574 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 29 states and 36 transitions. Complement of second has 7 states. [2018-11-18 09:40:21,574 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 [2018-11-18 09:40:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:40:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 09:40:21,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 09:40:21,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-18 09:40:21,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-18 09:40:21,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2018-11-18 09:40:21,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:40:21,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 23 states and 28 transitions. [2018-11-18 09:40:21,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 09:40:21,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 09:40:21,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 28 transitions. [2018-11-18 09:40:21,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:40:21,578 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-18 09:40:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 28 transitions. [2018-11-18 09:40:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 09:40:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 09:40:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-18 09:40:21,580 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-18 09:40:21,580 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-18 09:40:21,580 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:40:21,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-11-18 09:40:21,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:40:21,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:40:21,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:40:21,581 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1] [2018-11-18 09:40:21,582 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:40:21,582 INFO L794 eck$LassoCheckResult]: Stem: 298#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 290#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 296#L21 assume !!(main_~z~0 <= 1073741823); 297#L24-2 assume true; 304#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 307#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 299#L27 assume !!(main_~z~0 <= 1073741823); 300#L24-2 assume true; 312#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 310#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 301#L27 assume !!(main_~z~0 <= 1073741823); 303#L24-2 [2018-11-18 09:40:21,582 INFO L796 eck$LassoCheckResult]: Loop: 303#L24-2 assume true; 292#L22-1 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 293#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 303#L24-2 [2018-11-18 09:40:21,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -273210946, now seen corresponding path program 3 times [2018-11-18 09:40:21,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:21,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:21,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:40:21,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,590 INFO L82 PathProgramCache]: Analyzing trace with hash 45881, now seen corresponding path program 3 times [2018-11-18 09:40:21,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:21,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:40:21,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,595 INFO L82 PathProgramCache]: Analyzing trace with hash -264250276, now seen corresponding path program 2 times [2018-11-18 09:40:21,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:40:21,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:40:21,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:40:21,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:40:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:40:21,619 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:21,619 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:21,619 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:21,619 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:21,619 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:40:21,619 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:21,619 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:21,619 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:21,619 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-18 09:40:21,620 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:21,620 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:21,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,680 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:21,680 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,684 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:40:21,684 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_459f52aa-fc47-43d7-90b8-22f4c48bd59f/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 [2018-11-18 09:40:21,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:40:21,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:40:21,718 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:40:21,718 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:40:21,719 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:40:21,719 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:40:21,719 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:40:21,719 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:40:21,719 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:40:21,719 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:40:21,719 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:40:21,719 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-18 09:40:21,719 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:40:21,719 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:40:21,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:40:21,767 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:40:21,767 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:40:21,767 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 [2018-11-18 09:40:21,768 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:40:21,768 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:40:21,768 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:40:21,768 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:40:21,768 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:40:21,769 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:40:21,769 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:40:21,771 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:40:21,773 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:40:21,773 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:40:21,774 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:40:21,774 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:40:21,774 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:40:21,774 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2018-11-18 09:40:21,774 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:40:21,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:40:21,800 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 [2018-11-18 09:40:21,800 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 09:40:21,808 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 27 states and 32 transitions. Complement of second has 7 states. [2018-11-18 09:40:21,808 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 [2018-11-18 09:40:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:40:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 09:40:21,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 09:40:21,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,809 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:40:21,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:40:21,837 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 [2018-11-18 09:40:21,837 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 09:40:21,844 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 27 states and 32 transitions. Complement of second has 7 states. [2018-11-18 09:40:21,844 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 [2018-11-18 09:40:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:40:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 09:40:21,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 09:40:21,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,845 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:40:21,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:40:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:40:21,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:40:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:40:21,881 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 [2018-11-18 09:40:21,881 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 09:40:21,887 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 32 states and 38 transitions. Complement of second has 6 states. [2018-11-18 09:40:21,888 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 [2018-11-18 09:40:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:40:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 09:40:21,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 09:40:21,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-18 09:40:21,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-18 09:40:21,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:40:21,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 38 transitions. [2018-11-18 09:40:21,891 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:40:21,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-11-18 09:40:21,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:40:21,891 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:40:21,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:40:21,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:40:21,892 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:40:21,892 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:40:21,892 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:40:21,892 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 09:40:21,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:40:21,892 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:40:21,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 09:40:21,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:40:21 BoogieIcfgContainer [2018-11-18 09:40:21,896 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:40:21,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:40:21,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:40:21,897 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:40:21,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:20" (3/4) ... [2018-11-18 09:40:21,900 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:40:21,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:40:21,901 INFO L168 Benchmark]: Toolchain (without parser) took 1939.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:40:21,902 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:40:21,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.17 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:40:21,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.51 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:40:21,903 INFO L168 Benchmark]: Boogie Preprocessor took 10.08 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:40:21,903 INFO L168 Benchmark]: RCFGBuilder took 157.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:40:21,903 INFO L168 Benchmark]: BuchiAutomizer took 1609.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:40:21,904 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:40:21,906 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.17 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 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 18.51 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.08 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 157.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1609.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function 2 * z + 1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 68 SDtfs, 63 SDslu, 20 SDs, 0 SdLazy, 36 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...