./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strchr_short_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strchr_short_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/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 fa76bf6b20245863a3a0ece612004b4f99489c23 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 12:36:32,377 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:36:32,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:36:32,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:36:32,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:36:32,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:36:32,388 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:36:32,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:36:32,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:36:32,391 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:36:32,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:36:32,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:36:32,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:36:32,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:36:32,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:36:32,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:36:32,396 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:36:32,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:36:32,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:36:32,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:36:32,401 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:36:32,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:36:32,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:36:32,403 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:36:32,404 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:36:32,404 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:36:32,405 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:36:32,406 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:36:32,406 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:36:32,407 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:36:32,407 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:36:32,408 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:36:32,408 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:36:32,408 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:36:32,409 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:36:32,410 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:36:32,410 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 12:36:32,421 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:36:32,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:36:32,422 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 12:36:32,422 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 12:36:32,422 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 12:36:32,423 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 12:36:32,423 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 12:36:32,423 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 12:36:32,423 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 12:36:32,423 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 12:36:32,423 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 12:36:32,424 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:36:32,424 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 12:36:32,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:36:32,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:36:32,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 12:36:32,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 12:36:32,425 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 12:36:32,425 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:36:32,425 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 12:36:32,425 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:36:32,425 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 12:36:32,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:36:32,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:36:32,426 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 12:36:32,426 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:36:32,426 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 12:36:32,426 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 12:36:32,427 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 12:36:32,427 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_6d783f31-f4b3-43b5-bdb6-168c390746de/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 -> fa76bf6b20245863a3a0ece612004b4f99489c23 [2018-11-23 12:36:32,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:36:32,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:36:32,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:36:32,468 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:36:32,468 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:36:32,468 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/../../sv-benchmarks/c/termination-libowfat/strchr_short_true-termination.c.i [2018-11-23 12:36:32,511 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/data/b4da187c9/8521a2bad6da40818d280e1f61ce1d5e/FLAGdb546371c [2018-11-23 12:36:32,870 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:36:32,870 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/sv-benchmarks/c/termination-libowfat/strchr_short_true-termination.c.i [2018-11-23 12:36:32,879 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/data/b4da187c9/8521a2bad6da40818d280e1f61ce1d5e/FLAGdb546371c [2018-11-23 12:36:33,266 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/bin-2019/uautomizer/data/b4da187c9/8521a2bad6da40818d280e1f61ce1d5e [2018-11-23 12:36:33,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:36:33,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:36:33,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:36:33,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:36:33,273 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:36:33,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97dd10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33, skipping insertion in model container [2018-11-23 12:36:33,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:36:33,312 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:36:33,494 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:36:33,501 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:36:33,527 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:36:33,604 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:36:33,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33 WrapperNode [2018-11-23 12:36:33,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:36:33,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:36:33,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:36:33,605 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:36:33,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:36:33,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:36:33,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:36:33,635 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:36:33,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... [2018-11-23 12:36:33,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:36:33,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:36:33,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:36:33,650 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:36:33,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d783f31-f4b3-43b5-bdb6-168c390746de/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 [2018-11-23 12:36:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 12:36:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 12:36:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 12:36:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 12:36:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:36:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:36:33,876 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:36:33,876 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-23 12:36:33,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:36:33 BoogieIcfgContainer [2018-11-23 12:36:33,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:36:33,877 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 12:36:33,877 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 12:36:33,881 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 12:36:33,881 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 12:36:33,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 12:36:33" (1/3) ... [2018-11-23 12:36:33,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b8eb84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:36:33, skipping insertion in model container [2018-11-23 12:36:33,883 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 12:36:33,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:33" (2/3) ... [2018-11-23 12:36:33,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b8eb84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:36:33, skipping insertion in model container [2018-11-23 12:36:33,883 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 12:36:33,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:36:33" (3/3) ... [2018-11-23 12:36:33,885 INFO L375 chiAutomizerObserver]: Analyzing ICFG strchr_short_true-termination.c.i [2018-11-23 12:36:33,923 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 12:36:33,923 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 12:36:33,924 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 12:36:33,924 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 12:36:33,924 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:36:33,924 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:36:33,924 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 12:36:33,924 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:36:33,924 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 12:36:33,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-23 12:36:33,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:36:33,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:36:33,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:36:33,953 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 12:36:33,953 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:36:33,953 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 12:36:33,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-23 12:36:33,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:36:33,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:36:33,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:36:33,955 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 12:36:33,955 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:36:33,960 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~ret8.base, main_#t~ret8.offset, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~the_int~0;main_~in_len~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L516true assume !(main_~in_len~0 < 1);call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.alloc(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~the_int~0 := main_#t~nondet7;havoc main_#t~nondet7;strchr_#in~t.base, strchr_#in~t.offset, strchr_#in~c := main_~in~0.base, main_~in~0.offset, main_~the_int~0;havoc strchr_#res.base, strchr_#res.offset;havoc strchr_#t~mem2, strchr_#t~mem3, strchr_#t~pre4.base, strchr_#t~pre4.offset, strchr_~t.base, strchr_~t.offset, strchr_~c, strchr_~ch~0;strchr_~t.base, strchr_~t.offset := strchr_#in~t.base, strchr_#in~t.offset;strchr_~c := strchr_#in~c;havoc strchr_~ch~0;strchr_~ch~0 := (if strchr_~c % 256 <= 127 then strchr_~c % 256 else strchr_~c % 256 - 256); 10#L509-2true [2018-11-23 12:36:33,960 INFO L796 eck$LassoCheckResult]: Loop: 10#L509-2true assume !false;call strchr_#t~mem2 := read~int(strchr_~t.base, strchr_~t.offset, 1); 5#L510true assume !(strchr_#t~mem2 == strchr_~ch~0);havoc strchr_#t~mem2;call strchr_#t~mem3 := read~int(strchr_~t.base, strchr_~t.offset, 1); 9#L510-2true assume !(0 == strchr_#t~mem3);havoc strchr_#t~mem3;strchr_#t~pre4.base, strchr_#t~pre4.offset := strchr_~t.base, 1 + strchr_~t.offset;strchr_~t.base, strchr_~t.offset := strchr_~t.base, 1 + strchr_~t.offset;havoc strchr_#t~pre4.base, strchr_#t~pre4.offset; 10#L509-2true [2018-11-23 12:36:33,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:36:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2018-11-23 12:36:33,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:36:33,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:36:33,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:36:33,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:36:33,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:36:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:36:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:36:34,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:36:34,055 INFO L82 PathProgramCache]: Analyzing trace with hash 44851, now seen corresponding path program 1 times [2018-11-23 12:36:34,055 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:36:34,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:36:34,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:36:34,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:36:34,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:36:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:36:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:36:34,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:36:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash 889574320, now seen corresponding path program 1 times [2018-11-23 12:36:34,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:36:34,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:36:34,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:36:34,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:36:34,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:36:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:36:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:36:34,300 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-11-23 12:36:34,446 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-11-23 12:36:34,456 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:36:34,457 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:36:34,457 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:36:34,457 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:36:34,457 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:36:34,458 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:36:34,458 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:36:34,458 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:36:34,458 INFO L131 ssoRankerPreferences]: Filename of dumped script: strchr_short_true-termination.c.i_Iteration1_Lasso [2018-11-23 12:36:34,458 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:36:34,458 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:36:34,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:36:34,752 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-11-23 12:36:35,126 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:36:35,129 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:36:35,131 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 [2018-11-23 12:36:35,132 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,132 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,133 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,133 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,133 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,135 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,135 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,137 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,137 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 [2018-11-23 12:36:35,138 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,138 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,138 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,138 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,139 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,139 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,139 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,140 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,141 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 [2018-11-23 12:36:35,141 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,141 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,142 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,142 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,142 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,143 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,143 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,144 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,144 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 [2018-11-23 12:36:35,145 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,145 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,145 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,145 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,146 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,146 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,146 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,147 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,148 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 [2018-11-23 12:36:35,148 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,149 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,149 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,149 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,150 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,150 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,150 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,151 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,151 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 [2018-11-23 12:36:35,152 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,152 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,152 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,152 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,155 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:36:35,155 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:36:35,158 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,159 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 [2018-11-23 12:36:35,159 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,159 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,159 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,159 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,160 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,160 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,160 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,161 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,162 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 [2018-11-23 12:36:35,162 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,162 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,162 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,163 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,163 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,163 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,163 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,164 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,164 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 [2018-11-23 12:36:35,165 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,165 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,165 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,165 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,167 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:36:35,167 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:36:35,169 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,170 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 [2018-11-23 12:36:35,170 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,170 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,171 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,171 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,171 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,171 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,172 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,172 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,173 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 [2018-11-23 12:36:35,173 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,173 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,174 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,174 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,174 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,174 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,174 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,176 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,176 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 [2018-11-23 12:36:35,176 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,177 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,177 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,177 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,177 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,177 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,178 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,178 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,179 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 [2018-11-23 12:36:35,179 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,179 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:36:35,180 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,180 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,180 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,180 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:36:35,180 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:36:35,181 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,181 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 [2018-11-23 12:36:35,182 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,182 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,182 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,182 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,184 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:36:35,184 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:36:35,197 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:36:35,197 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 [2018-11-23 12:36:35,198 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:36:35,198 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:36:35,198 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:36:35,198 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:36:35,201 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:36:35,201 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:36:35,238 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:36:35,263 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-23 12:36:35,263 INFO L444 ModelExtractionUtils]: 18 out of 25 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-11-23 12:36:35,265 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:36:35,266 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-11-23 12:36:35,267 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:36:35,267 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc6.base)_1, ULTIMATE.start_strchr_~t.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc6.base)_1 - 1*ULTIMATE.start_strchr_~t.offset Supporting invariants [] [2018-11-23 12:36:35,295 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2018-11-23 12:36:35,300 WARN L1272 BoogieBacktranslator]: unknown boogie variable #length [2018-11-23 12:36:35,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:36:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:36:35,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:36:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:36:35,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:36:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:36:35,359 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 [2018-11-23 12:36:35,360 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2018-11-23 12:36:35,410 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 24 states and 30 transitions. Complement of second has 6 states. [2018-11-23 12:36:35,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 12:36:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 12:36:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-23 12:36:35,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-23 12:36:35,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:36:35,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-23 12:36:35,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:36:35,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-23 12:36:35,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:36:35,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 30 transitions. [2018-11-23 12:36:35,419 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 12:36:35,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2018-11-23 12:36:35,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 12:36:35,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 12:36:35,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 12:36:35,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 12:36:35,423 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:36:35,423 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:36:35,423 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:36:35,423 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 12:36:35,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 12:36:35,423 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 12:36:35,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 12:36:35,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 12:36:35 BoogieIcfgContainer [2018-11-23 12:36:35,429 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 12:36:35,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 12:36:35,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 12:36:35,431 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 12:36:35,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:36:33" (3/4) ... [2018-11-23 12:36:35,434 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 12:36:35,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 12:36:35,435 INFO L168 Benchmark]: Toolchain (without parser) took 2166.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.4 MB in the beginning and 839.5 MB in the end (delta: 117.0 MB). Peak memory consumption was 252.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:36:35,436 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:36:35,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-11-23 12:36:35,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.20 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 12:36:35,437 INFO L168 Benchmark]: Boogie Preprocessor took 15.65 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 12:36:35,438 INFO L168 Benchmark]: RCFGBuilder took 226.66 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: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 12:36:35,438 INFO L168 Benchmark]: BuchiAutomizer took 1551.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 839.5 MB in the end (delta: 264.9 MB). Peak memory consumption was 264.9 MB. Max. memory is 11.5 GB. [2018-11-23 12:36:35,439 INFO L168 Benchmark]: Witness Printer took 3.56 ms. Allocated memory is still 1.2 GB. Free memory is still 839.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:36:35,442 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 334.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.20 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.65 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.66 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: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1551.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 839.5 MB in the end (delta: 264.9 MB). Peak memory consumption was 264.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.56 ms. Allocated memory is still 1.2 GB. Free memory is still 839.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (in_len)] + -1 * t and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital224 mio100 ax100 hnf99 lsp72 ukn110 mio100 lsp35 div139 bol100 ite100 ukn100 eq158 hnf72 smp74 dnf281 smp56 tf100 neg93 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...