./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-dietlibc/strchr_short.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-dietlibc/strchr_short.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b9f420c703006a20f84c0f072fc483abdc031419ba97e1947a58423e06686a36 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:51:40,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:51:40,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:51:40,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:51:40,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:51:40,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:51:40,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:51:40,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:51:40,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:51:40,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:51:40,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:51:40,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:51:40,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:51:41,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:51:41,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:51:41,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:51:41,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:51:41,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:51:41,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:51:41,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:51:41,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:51:41,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:51:41,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:51:41,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:51:41,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:51:41,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:51:41,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:51:41,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:51:41,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:51:41,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:51:41,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:51:41,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:51:41,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:51:41,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:51:41,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:51:41,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:51:41,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:51:41,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:51:41,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:51:41,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:51:41,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:51:41,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:51:41,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:51:41,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:51:41,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:51:41,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:51:41,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:51:41,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:51:41,041 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:51:41,041 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:51:41,042 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:51:41,042 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:51:41,042 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:51:41,042 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:51:41,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:51:41,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:51:41,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:51:41,044 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:51:41,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:51:41,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:51:41,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:51:41,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:51:41,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:51:41,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:51:41,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:51:41,046 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:51:41,046 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9f420c703006a20f84c0f072fc483abdc031419ba97e1947a58423e06686a36 [2021-12-22 19:51:41,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:51:41,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:51:41,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:51:41,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:51:41,269 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:51:41,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-dietlibc/strchr_short.i [2021-12-22 19:51:41,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e700d84/a16e1f1204644c279fbe01264ce29580/FLAGc0a17a9be [2021-12-22 19:51:41,698 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:51:41,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/strchr_short.i [2021-12-22 19:51:41,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e700d84/a16e1f1204644c279fbe01264ce29580/FLAGc0a17a9be [2021-12-22 19:51:41,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e700d84/a16e1f1204644c279fbe01264ce29580 [2021-12-22 19:51:41,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:51:41,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:51:41,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:51:41,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:51:41,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:51:41,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:51:41" (1/1) ... [2021-12-22 19:51:41,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222c70bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:41, skipping insertion in model container [2021-12-22 19:51:41,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:51:41" (1/1) ... [2021-12-22 19:51:41,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:51:41,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:51:41,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:51:41,975 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:51:41,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:51:42,023 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:51:42,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42 WrapperNode [2021-12-22 19:51:42,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:51:42,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:51:42,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:51:42,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:51:42,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,060 INFO L137 Inliner]: procedures = 113, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-12-22 19:51:42,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:51:42,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:51:42,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:51:42,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:51:42,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:51:42,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:51:42,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:51:42,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:51:42,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (1/1) ... [2021-12-22 19:51:42,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:42,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:42,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-22 19:51:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 19:51:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 19:51:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 19:51:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 19:51:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:51:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:51:42,214 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:51:42,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:51:42,317 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:51:42,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:51:42,322 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:51:42,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:51:42 BoogieIcfgContainer [2021-12-22 19:51:42,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:51:42,324 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:51:42,324 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:51:42,326 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:51:42,326 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:51:42,327 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:51:41" (1/3) ... [2021-12-22 19:51:42,335 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10721cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:51:42, skipping insertion in model container [2021-12-22 19:51:42,335 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:51:42,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:51:42" (2/3) ... [2021-12-22 19:51:42,335 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10721cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:51:42, skipping insertion in model container [2021-12-22 19:51:42,335 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:51:42,336 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:51:42" (3/3) ... [2021-12-22 19:51:42,336 INFO L388 chiAutomizerObserver]: Analyzing ICFG strchr_short.i [2021-12-22 19:51:42,368 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:51:42,368 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:51:42,368 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:51:42,368 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:51:42,368 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:51:42,368 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:51:42,368 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:51:42,368 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:51:42,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:51:42,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:51:42,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:51:42,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:51:42,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:51:42,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:51:42,393 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:51:42,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:51:42,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:51:42,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:51:42,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:51:42,395 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:51:42,395 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:51:42,400 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~malloc6#1.base, main_#t~malloc6#1.offset, main_#t~nondet7#1, main_#t~ret8#1.base, main_#t~ret8#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 10#L516true assume !(main_~in_len~0#1 < 1);call main_#t~malloc6#1.base, main_#t~malloc6#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc6#1.base, main_#t~malloc6#1.offset;call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;assume { :begin_inline_strchr } true;strchr_#in~t#1.base, strchr_#in~t#1.offset, strchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strchr_#res#1.base, strchr_#res#1.offset;havoc strchr_#t~mem2#1, strchr_#t~mem3#1, strchr_#t~pre4#1.base, strchr_#t~pre4#1.offset, strchr_~t#1.base, strchr_~t#1.offset, strchr_~c#1, strchr_~ch~0#1;strchr_~t#1.base, strchr_~t#1.offset := strchr_#in~t#1.base, strchr_#in~t#1.offset;strchr_~c#1 := strchr_#in~c#1;havoc strchr_~ch~0#1;strchr_~ch~0#1 := (if strchr_~c#1 % 256 <= 127 then strchr_~c#1 % 256 else strchr_~c#1 % 256 - 256); 6#L509-2true [2021-12-22 19:51:42,400 INFO L793 eck$LassoCheckResult]: Loop: 6#L509-2true assume !false;call strchr_#t~mem2#1 := read~int(strchr_~t#1.base, strchr_~t#1.offset, 1); 12#L510true assume !(strchr_#t~mem2#1 == strchr_~ch~0#1);havoc strchr_#t~mem2#1;call strchr_#t~mem3#1 := read~int(strchr_~t#1.base, strchr_~t#1.offset, 1); 9#L510-2true assume !(0 == strchr_#t~mem3#1);havoc strchr_#t~mem3#1;strchr_#t~pre4#1.base, strchr_#t~pre4#1.offset := strchr_~t#1.base, 1 + strchr_~t#1.offset;strchr_~t#1.base, strchr_~t#1.offset := strchr_~t#1.base, 1 + strchr_~t#1.offset;havoc strchr_#t~pre4#1.base, strchr_#t~pre4#1.offset; 6#L509-2true [2021-12-22 19:51:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:51:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-12-22 19:51:42,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:51:42,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347051636] [2021-12-22 19:51:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:51:42,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:51:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:51:42,501 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:51:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:51:42,552 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:51:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:51:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash 44851, now seen corresponding path program 1 times [2021-12-22 19:51:42,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:51:42,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358284998] [2021-12-22 19:51:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:51:42,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:51:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:51:42,561 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:51:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:51:42,568 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:51:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:51:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 889574320, now seen corresponding path program 1 times [2021-12-22 19:51:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:51:42,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489615325] [2021-12-22 19:51:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:51:42,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:51:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:51:42,608 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:51:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:51:42,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:51:43,037 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:51:43,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:51:43,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:51:43,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:51:43,038 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:51:43,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:51:43,039 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:51:43,039 INFO L133 ssoRankerPreferences]: Filename of dumped script: strchr_short.i_Iteration1_Lasso [2021-12-22 19:51:43,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:51:43,040 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:51:43,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:51:43,636 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:51:43,639 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:51:43,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-22 19:51:43,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:43,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-22 19:51:43,692 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,700 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,708 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-22 19:51:43,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-22 19:51:43,727 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,734 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,739 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-22 19:51:43,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-22 19:51:43,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:51:43,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:51:43,787 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:43,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-22 19:51:43,809 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,831 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,846 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:43,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-22 19:51:43,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,883 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:43,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-22 19:51:43,904 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,911 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,912 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:51:43,912 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:51:43,922 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:43,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-22 19:51:43,943 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,951 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,951 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,958 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:43,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:43,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:43,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:43,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:43,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-22 19:51:43,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:43,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:43,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:51:43,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:43,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:43,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:43,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:51:43,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:51:43,991 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:44,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:44,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:44,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:44,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-22 19:51:44,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:44,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:44,016 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2021-12-22 19:51:44,016 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-12-22 19:51:44,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:44,057 INFO L401 nArgumentSynthesizer]: We have 56 Motzkin's Theorem applications. [2021-12-22 19:51:44,057 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2021-12-22 19:51:44,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:51:44,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:44,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:44,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:44,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-22 19:51:44,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:51:44,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:51:44,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:51:44,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:51:44,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:51:44,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:51:44,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:51:44,155 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:51:44,176 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:51:44,176 INFO L444 ModelExtractionUtils]: 21 out of 25 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-22 19:51:44,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:51:44,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:51:44,192 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:51:44,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-22 19:51:44,201 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:51:44,233 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-22 19:51:44,233 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:51:44,233 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strchr_~t#1.offset, v_rep(select #length ULTIMATE.start_strchr_~t#1.base)_1) = -1*ULTIMATE.start_strchr_~t#1.offset + 1*v_rep(select #length ULTIMATE.start_strchr_~t#1.base)_1 Supporting invariants [] [2021-12-22 19:51:44,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:44,266 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2021-12-22 19:51:44,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:51:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:51:44,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:51:44,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:51:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:51:44,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:51:44,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:51:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:51:44,359 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-22 19:51:44,360 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:51:44,385 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 33 transitions. Complement of second has 5 states. [2021-12-22 19:51:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-22 19:51:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:51:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-12-22 19:51:44,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 3 letters. [2021-12-22 19:51:44,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:51:44,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 3 letters. [2021-12-22 19:51:44,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:51:44,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-22 19:51:44,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:51:44,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2021-12-22 19:51:44,394 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-22 19:51:44,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2021-12-22 19:51:44,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-22 19:51:44,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-22 19:51:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-22 19:51:44,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:51:44,397 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:51:44,397 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:51:44,397 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:51:44,397 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:51:44,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-22 19:51:44,397 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-22 19:51:44,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-22 19:51:44,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 07:51:44 BoogieIcfgContainer [2021-12-22 19:51:44,402 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 19:51:44,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:51:44,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:51:44,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:51:44,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:51:42" (3/4) ... [2021-12-22 19:51:44,405 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 19:51:44,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:51:44,405 INFO L158 Benchmark]: Toolchain (without parser) took 2687.21ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.9MB in the beginning and 84.1MB in the end (delta: -33.2MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-22 19:51:44,406 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:51:44,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.24ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.7MB in the beginning and 97.4MB in the end (delta: -46.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-12-22 19:51:44,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.35ms. Allocated memory is still 125.8MB. Free memory was 97.4MB in the beginning and 95.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:51:44,407 INFO L158 Benchmark]: Boogie Preprocessor took 31.19ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 94.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:51:44,407 INFO L158 Benchmark]: RCFGBuilder took 230.63ms. Allocated memory is still 125.8MB. Free memory was 94.4MB in the beginning and 84.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 19:51:44,407 INFO L158 Benchmark]: BuchiAutomizer took 2078.09ms. Allocated memory is still 125.8MB. Free memory was 84.4MB in the beginning and 84.1MB in the end (delta: 288.8kB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2021-12-22 19:51:44,408 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 125.8MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:51:44,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.24ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.7MB in the beginning and 97.4MB in the end (delta: -46.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.35ms. Allocated memory is still 125.8MB. Free memory was 97.4MB in the beginning and 95.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.19ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 94.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.63ms. Allocated memory is still 125.8MB. Free memory was 94.4MB in the beginning and 84.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2078.09ms. Allocated memory is still 125.8MB. Free memory was 84.4MB in the beginning and 84.1MB in the end (delta: 288.8kB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 125.8MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * 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 -1 * t + unknown-#length-unknown[t] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. 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: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital147 mio100 ax100 hnf100 lsp104 ukn85 mio100 lsp33 div163 bol100 ite100 ukn100 eq158 hnf96 smp69 dnf228 smp68 tf100 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 98ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 2 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 56 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! [2021-12-22 19:51:44,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-22 19:51:44,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE