./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strchr_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_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strchr_short.i -s /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/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 fa76bf6b20245863a3a0ece612004b4f99489c23 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:58:21,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:21,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:21,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:21,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:21,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:21,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:21,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:21,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:21,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:21,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:21,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:21,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:21,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:21,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:21,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:21,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:21,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:21,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:21,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:21,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:21,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:21,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:21,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:21,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:21,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:21,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:21,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:21,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:21,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:21,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:21,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:21,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:21,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:21,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:21,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:21,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:21,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:21,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:21,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:21,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:21,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:58:21,060 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:21,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:21,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:21,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:21,062 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:21,062 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:58:21,062 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:58:21,063 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:58:21,063 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:58:21,063 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:58:21,063 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:58:21,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:21,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:21,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:21,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:21,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:58:21,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:58:21,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:58:21,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:21,065 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:58:21,066 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:21,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:58:21,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:21,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:21,066 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:58:21,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:21,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:21,067 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:58:21,068 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:58:21,068 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_915bac6d-1a96-4675-9419-2725db915487/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 -> fa76bf6b20245863a3a0ece612004b4f99489c23 [2019-10-22 08:58:21,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:21,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:21,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:21,112 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:21,113 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:21,113 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/../../sv-benchmarks/c/termination-libowfat/strchr_short.i [2019-10-22 08:58:21,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/data/0392d3e70/cba920c179c342df977b2231ff75e2ac/FLAG66173066d [2019-10-22 08:58:21,604 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:21,605 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/sv-benchmarks/c/termination-libowfat/strchr_short.i [2019-10-22 08:58:21,613 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/data/0392d3e70/cba920c179c342df977b2231ff75e2ac/FLAG66173066d [2019-10-22 08:58:21,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/bin/uautomizer/data/0392d3e70/cba920c179c342df977b2231ff75e2ac [2019-10-22 08:58:21,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:21,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:21,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:21,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:21,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:21,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:21" (1/1) ... [2019-10-22 08:58:21,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34867b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:21, skipping insertion in model container [2019-10-22 08:58:21,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:21" (1/1) ... [2019-10-22 08:58:21,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:21,680 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:22,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:22,058 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:22,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:22,139 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:22,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22 WrapperNode [2019-10-22 08:58:22,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:22,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:22,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:22,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:22,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:22,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:22,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:22,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:22,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:22,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:22,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:22,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:22,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_915bac6d-1a96-4675-9419-2725db915487/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 08:58:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:58:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:58:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:22,549 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:22,549 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:58:22,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:22 BoogieIcfgContainer [2019-10-22 08:58:22,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:22,558 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:58:22,558 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:58:22,562 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:58:22,563 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:22,563 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:58:21" (1/3) ... [2019-10-22 08:58:22,565 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4861cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:22, skipping insertion in model container [2019-10-22 08:58:22,565 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:22,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (2/3) ... [2019-10-22 08:58:22,565 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4861cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:22, skipping insertion in model container [2019-10-22 08:58:22,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:22,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:22" (3/3) ... [2019-10-22 08:58:22,568 INFO L371 chiAutomizerObserver]: Analyzing ICFG strchr_short.i [2019-10-22 08:58:22,622 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:58:22,622 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:58:22,622 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:58:22,622 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:22,622 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:22,623 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:58:22,623 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:22,623 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:58:22,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-10-22 08:58:22,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:22,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:22,671 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:22,681 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:22,681 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:22,682 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:58:22,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-10-22 08:58:22,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:22,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:22,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:22,688 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:22,688 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:22,696 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~ret8.base, main_#t~ret8.offset, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~the_int~0;main_~in_len~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L516true assume !(main_~in_len~0 < 1);call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~the_int~0 := main_#t~nondet7;havoc main_#t~nondet7;strchr_#in~t.base, strchr_#in~t.offset, strchr_#in~c := main_~in~0.base, main_~in~0.offset, main_~the_int~0;havoc strchr_#res.base, strchr_#res.offset;havoc strchr_#t~mem2, strchr_#t~mem3, strchr_#t~pre4.base, strchr_#t~pre4.offset, strchr_~t.base, strchr_~t.offset, strchr_~c, strchr_~ch~0;strchr_~t.base, strchr_~t.offset := strchr_#in~t.base, strchr_#in~t.offset;strchr_~c := strchr_#in~c;havoc strchr_~ch~0;strchr_~ch~0 := (if strchr_~c % 256 <= 127 then strchr_~c % 256 else strchr_~c % 256 - 256); 10#L509-2true [2019-10-22 08:58:22,698 INFO L793 eck$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 [2019-10-22 08:58:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:22,704 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2019-10-22 08:58:22,714 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:22,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988505626] [2019-10-22 08:58:22,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:22,881 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash 44851, now seen corresponding path program 1 times [2019-10-22 08:58:22,882 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:22,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790976532] [2019-10-22 08:58:22,883 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,883 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:22,898 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash 889574320, now seen corresponding path program 1 times [2019-10-22 08:58:22,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:22,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933958756] [2019-10-22 08:58:22,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:22,966 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:23,252 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-22 08:58:23,449 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-10-22 08:58:23,463 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:23,463 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:23,463 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:23,464 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:23,464 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:23,464 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:23,464 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:23,464 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:23,464 INFO L131 ssoRankerPreferences]: Filename of dumped script: strchr_short.i_Iteration1_Lasso [2019-10-22 08:58:23,464 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:23,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:23,500 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 08:58:23,508 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 08:58:23,514 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 08:58:23,518 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 08:58:23,520 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 08:58:23,523 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 08:58:23,528 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 08:58:23,530 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 08:58:23,895 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-10-22 08:58:23,963 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 08:58:23,966 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 08:58:23,971 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 08:58:23,974 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 08:58:23,978 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 08:58:23,982 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 08:58:24,519 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-10-22 08:58:24,564 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:24,569 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:24,571 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 08:58:24,576 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,576 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:24,577 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,577 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,577 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,579 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:24,579 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:24,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,583 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 08:58:24,584 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,584 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:24,584 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,585 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,585 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,585 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:24,585 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:24,586 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,586 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 08:58:24,587 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,587 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:24,587 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,588 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,588 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,591 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:24,591 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:24,592 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,592 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 08:58:24,593 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,593 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:24,593 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,593 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,593 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,594 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:24,594 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:24,595 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,595 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 08:58:24,596 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,603 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:24,603 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,603 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,603 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,604 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:24,604 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:24,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,605 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 08:58:24,606 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,606 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,606 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,606 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,611 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:24,611 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:24,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,615 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 08:58:24,616 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,618 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:24,618 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,618 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,619 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,619 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:24,619 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:24,620 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,621 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 08:58:24,621 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,622 INFO L202 nArgumentSynthesizer]: 2 stem disjuncts [2019-10-22 08:58:24,622 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,622 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,632 INFO L400 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-10-22 08:58:24,632 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:24,673 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,674 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 08:58:24,674 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,675 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,675 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,675 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,680 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:24,680 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:24,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:24,702 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 08:58:24,703 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:24,703 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:24,703 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:24,703 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:24,708 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:24,708 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:24,785 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:24,837 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:58:24,838 INFO L444 ModelExtractionUtils]: 20 out of 25 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:58:24,842 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:24,844 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-10-22 08:58:24,844 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:24,845 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strchr_~t.base)_1, ULTIMATE.start_strchr_~t.offset) = 1*v_rep(select #length ULTIMATE.start_strchr_~t.base)_1 - 1*ULTIMATE.start_strchr_~t.offset Supporting invariants [] [2019-10-22 08:58:24,858 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-10-22 08:58:24,867 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-10-22 08:58:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:24,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:24,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:24,945 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 08:58:24,961 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 08:58:24,962 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-10-22 08:58:25,010 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 27 states and 33 transitions. Complement of second has 5 states. [2019-10-22 08:58:25,012 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 08:58:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-10-22 08:58:25,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:58:25,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:25,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:58:25,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:25,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:58:25,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:25,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2019-10-22 08:58:25,023 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:25,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2019-10-22 08:58:25,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:25,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:25,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:25,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:25,030 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:25,030 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:25,031 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:25,031 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:58:25,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:25,031 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:25,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:58:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:58:25 BoogieIcfgContainer [2019-10-22 08:58:25,038 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:58:25,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:25,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:25,039 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:25,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:22" (3/4) ... [2019-10-22 08:58:25,044 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:25,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:25,047 INFO L168 Benchmark]: Toolchain (without parser) took 3415.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -142.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:25,048 INFO L168 Benchmark]: CDTParser took 0.21 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 08:58:25,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.49 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 08:58:25,050 INFO L168 Benchmark]: Boogie Preprocessor took 25.67 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 08:58:25,050 INFO L168 Benchmark]: RCFGBuilder took 345.65 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,051 INFO L168 Benchmark]: BuchiAutomizer took 2480.46 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,052 INFO L168 Benchmark]: Witness Printer took 6.32 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 08:58:25,054 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 508.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.49 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 25.67 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 345.65 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2480.46 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 2.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. 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: inital230 mio100 ax100 hnf99 lsp72 ukn112 mio100 lsp34 div135 bol100 ite100 ukn100 eq159 hnf73 smp74 dnf281 smp56 tf100 neg93 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 5 VariablesLoop: 4 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 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...