./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strrchr_short.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strrchr_short.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98f62af880b69d3051603379cc048811fab2d4d7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:00,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:00,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:00,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:00,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:00,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:00,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:00,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:00,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:00,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:00,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:00,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:00,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:00,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:00,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:00,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:00,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:00,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:00,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:00,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:00,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:00,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:00,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:00,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:00,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:00,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:00,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:00,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:00,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:00,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:00,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:00,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:00,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:00,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:00,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:00,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:00,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:00,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:00,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:00,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:00,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:00,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:58:00,437 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:00,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:00,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:00,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:00,438 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:00,438 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:58:00,448 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:58:00,449 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:58:00,449 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:58:00,449 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:58:00,449 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:58:00,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:00,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:00,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:00,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:58:00,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:00,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:00,451 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:58:00,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:00,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:00,451 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:58:00,452 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:58:00,452 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98f62af880b69d3051603379cc048811fab2d4d7 [2019-10-22 08:58:00,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:00,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:00,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:00,498 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:00,498 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:00,499 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/../../sv-benchmarks/c/termination-libowfat/strrchr_short.i [2019-10-22 08:58:00,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/data/a6f5fd22e/2e88ed73799b400db58cae2f5bee3f08/FLAG84cec18cd [2019-10-22 08:58:01,045 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:01,045 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/sv-benchmarks/c/termination-libowfat/strrchr_short.i [2019-10-22 08:58:01,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/data/a6f5fd22e/2e88ed73799b400db58cae2f5bee3f08/FLAG84cec18cd [2019-10-22 08:58:01,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/data/a6f5fd22e/2e88ed73799b400db58cae2f5bee3f08 [2019-10-22 08:58:01,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:01,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:01,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:01,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:01,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:01,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:01" (1/1) ... [2019-10-22 08:58:01,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33934ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:01, skipping insertion in model container [2019-10-22 08:58:01,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:01" (1/1) ... [2019-10-22 08:58:01,538 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:01,569 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:01,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:01,921 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:01,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:02,004 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:02,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02 WrapperNode [2019-10-22 08:58:02,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:02,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:02,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:02,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:02,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:02,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:02,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:02,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:02,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... [2019-10-22 08:58:02,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:02,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:02,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:02,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:02,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e9e773b-b511-4ed3-a086-2a664fa2ecbc/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:58:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:58:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:02,357 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:02,357 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:58:02,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:02 BoogieIcfgContainer [2019-10-22 08:58:02,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:02,358 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:58:02,358 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:58:02,361 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:58:02,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:02,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:58:01" (1/3) ... [2019-10-22 08:58:02,363 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23f9afe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:02, skipping insertion in model container [2019-10-22 08:58:02,363 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:02,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:02" (2/3) ... [2019-10-22 08:58:02,364 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23f9afe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:02, skipping insertion in model container [2019-10-22 08:58:02,364 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:02,364 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:02" (3/3) ... [2019-10-22 08:58:02,365 INFO L371 chiAutomizerObserver]: Analyzing ICFG strrchr_short.i [2019-10-22 08:58:02,403 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:58:02,403 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:58:02,403 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:58:02,403 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:02,403 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:02,403 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:58:02,403 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:02,404 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:58:02,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-10-22 08:58:02,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:58:02,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:02,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:02,444 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:02,445 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:58:02,445 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:58:02,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-10-22 08:58:02,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:58:02,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:02,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:02,446 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:02,446 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:58:02,458 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~ret8.base, main_#t~ret8.offset, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~the_int~0;main_~in_len~0 := main_#t~nondet5;havoc main_#t~nondet5; 13#L517true assume !(main_~in_len~0 < 1);call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~the_int~0 := main_#t~nondet7;havoc main_#t~nondet7;strrchr_#in~t.base, strrchr_#in~t.offset, strrchr_#in~c := main_~in~0.base, main_~in~0.offset, main_~the_int~0;havoc strrchr_#res.base, strrchr_#res.offset;havoc strrchr_#t~mem2, strrchr_#t~mem3, strrchr_#t~pre4.base, strrchr_#t~pre4.offset, strrchr_~t.base, strrchr_~t.offset, strrchr_~c, strrchr_~ch~0, strrchr_~l~0.base, strrchr_~l~0.offset;strrchr_~t.base, strrchr_~t.offset := strrchr_#in~t.base, strrchr_#in~t.offset;strrchr_~c := strrchr_#in~c;havoc strrchr_~ch~0;strrchr_~l~0.base, strrchr_~l~0.offset := 0, 0;strrchr_~ch~0 := (if strrchr_~c % 256 <= 127 then strrchr_~c % 256 else strrchr_~c % 256 - 256); 7#L510-2true [2019-10-22 08:58:02,458 INFO L793 eck$LassoCheckResult]: Loop: 7#L510-2true assume !false;call strrchr_#t~mem2 := read~int(strrchr_~t.base, strrchr_~t.offset, 1); 14#L511true assume strrchr_#t~mem2 == strrchr_~ch~0;havoc strrchr_#t~mem2;strrchr_~l~0.base, strrchr_~l~0.offset := strrchr_~t.base, strrchr_~t.offset; 6#L511-2true call strrchr_#t~mem3 := read~int(strrchr_~t.base, strrchr_~t.offset, 1); 9#L511-3true assume !(0 == strrchr_#t~mem3);havoc strrchr_#t~mem3;strrchr_#t~pre4.base, strrchr_#t~pre4.offset := strrchr_~t.base, 1 + strrchr_~t.offset;strrchr_~t.base, strrchr_~t.offset := strrchr_~t.base, 1 + strrchr_~t.offset;havoc strrchr_#t~pre4.base, strrchr_#t~pre4.offset; 7#L510-2true [2019-10-22 08:58:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2019-10-22 08:58:02,471 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:02,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113555808] [2019-10-22 08:58:02,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:02,586 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:02,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1388393, now seen corresponding path program 1 times [2019-10-22 08:58:02,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:02,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426233506] [2019-10-22 08:58:02,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:02,602 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1806998156, now seen corresponding path program 1 times [2019-10-22 08:58:02,604 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:02,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210284146] [2019-10-22 08:58:02,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:02,661 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:02,912 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-10-22 08:58:03,098 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-22 08:58:03,108 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:03,109 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:03,109 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:03,109 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:03,109 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:03,110 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:03,110 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:03,110 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:03,110 INFO L131 ssoRankerPreferences]: Filename of dumped script: strrchr_short.i_Iteration1_Lasso [2019-10-22 08:58:03,110 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:03,111 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:03,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,542 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-22 08:58:03,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:03,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:04,105 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-10-22 08:58:04,176 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:04,183 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:04,185 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,186 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,186 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:04,187 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,187 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,187 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,189 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:04,189 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:04,191 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,191 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,192 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,192 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:04,192 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,192 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,192 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,193 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:04,193 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:04,194 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,202 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,202 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:04,202 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,202 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,202 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,203 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:04,203 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:04,203 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,204 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,204 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:04,204 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,205 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,205 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,205 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:04,205 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:04,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,212 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,212 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:04,212 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,212 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,212 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,213 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:04,213 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:04,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,215 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,215 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:04,215 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,215 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,215 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,216 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:04,216 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:04,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,218 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,218 INFO L202 nArgumentSynthesizer]: 2 stem disjuncts [2019-10-22 08:58:04,218 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,218 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,225 INFO L400 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-10-22 08:58:04,225 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:04,291 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,292 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,292 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,292 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,292 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,300 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:04,300 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:04,314 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,319 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,320 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,321 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,321 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,321 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,322 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:04,322 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:04,328 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,329 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,329 INFO L202 nArgumentSynthesizer]: 2 stem disjuncts [2019-10-22 08:58:04,329 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 08:58:04,330 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,342 INFO L400 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2019-10-22 08:58:04,342 INFO L401 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-10-22 08:58:04,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:04,414 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:04,415 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:04,415 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:04,415 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:04,416 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:04,419 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:04,419 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:04,454 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:04,479 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:58:04,479 INFO L444 ModelExtractionUtils]: 19 out of 28 variables were initially zero. Simplification set additionally 6 variables to zero. [2019-10-22 08:58:04,481 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:04,483 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-10-22 08:58:04,483 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:04,484 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strrchr_~t.base)_1, ULTIMATE.start_strrchr_~t.offset) = 1*v_rep(select #length ULTIMATE.start_strrchr_~t.base)_1 - 1*ULTIMATE.start_strrchr_~t.offset Supporting invariants [] [2019-10-22 08:58:04,498 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-10-22 08:58:04,506 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-10-22 08:58:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:04,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:04,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:04,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:04,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:04,593 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:58:04,594 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2019-10-22 08:58:04,641 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 3 states. Result 27 states and 33 transitions. Complement of second has 5 states. [2019-10-22 08:58:04,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-10-22 08:58:04,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 4 letters. [2019-10-22 08:58:04,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:04,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2019-10-22 08:58:04,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:04,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2019-10-22 08:58:04,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:04,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2019-10-22 08:58:04,651 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:04,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2019-10-22 08:58:04,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:04,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:04,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:04,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:04,656 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:04,656 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:04,656 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:04,656 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:58:04,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:04,657 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:04,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:58:04,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:58:04 BoogieIcfgContainer [2019-10-22 08:58:04,663 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:58:04,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:04,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:04,664 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:04,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:02" (3/4) ... [2019-10-22 08:58:04,667 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:04,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:04,669 INFO L168 Benchmark]: Toolchain (without parser) took 3147.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -100.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:04,670 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:04,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:04,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:04,672 INFO L168 Benchmark]: Boogie Preprocessor took 30.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:04,672 INFO L168 Benchmark]: RCFGBuilder took 284.59 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:04,673 INFO L168 Benchmark]: BuchiAutomizer took 2305.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:04,673 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:04,676 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 482.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 284.59 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2305.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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[t] + -1 * t and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. 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: 11 SDtfs, 12 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital247 mio100 ax100 hnf99 lsp71 ukn114 mio100 lsp31 div136 bol100 ite100 ukn100 eq160 hnf72 smp85 dnf235 smp52 tf100 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 85ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 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...