./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrncat_diffterm_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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-15/cstrncat_diffterm_alloca.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 32b638142d47f07114d40dfbdfc741b7fdcb6c00b04416e88fb2c521a1626d73 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:05:15,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:05:15,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:05:15,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:05:15,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:05:15,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:05:15,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:05:15,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:05:15,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:05:15,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:05:15,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:05:15,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:05:15,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:05:15,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:05:15,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:05:15,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:05:15,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:05:15,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:05:15,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:05:15,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:05:15,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:05:15,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:05:15,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:05:15,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:05:15,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:05:15,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:05:15,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:05:15,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:05:15,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:05:15,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:05:15,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:05:15,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:05:15,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:05:15,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:05:15,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:05:15,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:05:15,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:05:15,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:05:15,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:05:15,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:05:15,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:05:15,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 22:05:15,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:05:15,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:05:15,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:05:15,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:05:15,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:05:15,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:05:15,343 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:05:15,343 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:05:15,344 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:05:15,344 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:05:15,344 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:05:15,345 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:05:15,345 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:05:15,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:05:15,345 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:05:15,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:05:15,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:05:15,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:05:15,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:05:15,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:05:15,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:05:15,347 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:05:15,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:05:15,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:05:15,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:05:15,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:05:15,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:05:15,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:05:15,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:05:15,351 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:05:15,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32b638142d47f07114d40dfbdfc741b7fdcb6c00b04416e88fb2c521a1626d73 [2021-12-21 22:05:15,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:05:15,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:05:15,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:05:15,578 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:05:15,579 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:05:15,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrncat_diffterm_alloca.i [2021-12-21 22:05:15,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a833c47b/36475611e12a45918355254657911211/FLAG1bb617939 [2021-12-21 22:05:16,045 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:05:16,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrncat_diffterm_alloca.i [2021-12-21 22:05:16,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a833c47b/36475611e12a45918355254657911211/FLAG1bb617939 [2021-12-21 22:05:16,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a833c47b/36475611e12a45918355254657911211 [2021-12-21 22:05:16,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:05:16,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:05:16,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:05:16,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:05:16,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:05:16,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38463a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16, skipping insertion in model container [2021-12-21 22:05:16,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:05:16,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:05:16,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:05:16,742 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:05:16,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:05:16,810 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:05:16,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16 WrapperNode [2021-12-21 22:05:16,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:05:16,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:05:16,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:05:16,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:05:16,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,855 INFO L137 Inliner]: procedures = 152, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2021-12-21 22:05:16,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:05:16,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:05:16,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:05:16,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:05:16,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:05:16,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:05:16,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:05:16,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:05:16,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (1/1) ... [2021-12-21 22:05:16,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:16,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:16,956 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) [2021-12-21 22:05:16,958 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 [2021-12-21 22:05:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 22:05:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 22:05:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 22:05:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 22:05:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:05:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:05:17,105 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:05:17,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:05:17,329 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:05:17,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:05:17,337 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:05:17,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:17 BoogieIcfgContainer [2021-12-21 22:05:17,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:05:17,340 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:05:17,340 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:05:17,342 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:05:17,343 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:05:17,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:05:16" (1/3) ... [2021-12-21 22:05:17,344 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b1d4373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:05:17, skipping insertion in model container [2021-12-21 22:05:17,344 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:05:17,344 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:05:16" (2/3) ... [2021-12-21 22:05:17,345 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b1d4373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:05:17, skipping insertion in model container [2021-12-21 22:05:17,345 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:05:17,345 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:17" (3/3) ... [2021-12-21 22:05:17,346 INFO L388 chiAutomizerObserver]: Analyzing ICFG cstrncat_diffterm_alloca.i [2021-12-21 22:05:17,389 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:05:17,389 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:05:17,389 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:05:17,390 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:05:17,390 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:05:17,390 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:05:17,390 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:05:17,390 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:05:17,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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) [2021-12-21 22:05:17,421 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-21 22:05:17,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:05:17,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:05:17,425 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-21 22:05:17,426 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:05:17,426 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:05:17,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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) [2021-12-21 22:05:17,429 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-21 22:05:17,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:05:17,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:05:17,429 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-21 22:05:17,429 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:05:17,435 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet213#1, main_#t~nondet214#1, main_#t~nondet215#1, main_#t~malloc216#1.base, main_#t~malloc216#1.offset, main_#t~malloc217#1.base, main_#t~malloc217#1.offset, main_#t~ret218#1.base, main_#t~ret218#1.offset, main_~length1~0#1, main_~length2~0#1, main_~n~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset;main_~length1~0#1 := main_#t~nondet213#1;havoc main_#t~nondet213#1;main_~length2~0#1 := main_#t~nondet214#1;havoc main_#t~nondet214#1;main_~n~0#1 := main_#t~nondet215#1;havoc main_#t~nondet215#1; 18#L381true assume !(main_~length1~0#1 < 1); 15#L381-2true assume !(main_~length2~0#1 < 1); 13#L384-1true assume !(main_~n~0#1 < 1); 17#L387-1true assume !(main_~length1~0#1 < main_~n~0#1 || main_~length1~0#1 - main_~n~0#1 < main_~length2~0#1);call main_#t~malloc216#1.base, main_#t~malloc216#1.offset := #Ultimate.allocOnStack(main_~length1~0#1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_#t~malloc216#1.base, main_#t~malloc216#1.offset;call main_#t~malloc217#1.base, main_#t~malloc217#1.offset := #Ultimate.allocOnStack(main_~length2~0#1);main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset := main_#t~malloc217#1.base, main_#t~malloc217#1.offset;call write~int(49, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset + (main_~length1~0#1 - main_~n~0#1 - 1), 1);call write~int(49, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset + (main_~length2~0#1 - 1), 1);assume { :begin_inline_cstrncat } true;cstrncat_#in~s1#1.base, cstrncat_#in~s1#1.offset, cstrncat_#in~s2#1.base, cstrncat_#in~s2#1.offset, cstrncat_#in~n#1 := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset, main_~n~0#1;havoc cstrncat_#res#1.base, cstrncat_#res#1.offset;havoc cstrncat_#t~post206#1.base, cstrncat_#t~post206#1.offset, cstrncat_#t~mem205#1, cstrncat_#t~post210#1, cstrncat_#t~post211#1.base, cstrncat_#t~post211#1.offset, cstrncat_#t~post207#1.base, cstrncat_#t~post207#1.offset, cstrncat_#t~mem208#1, cstrncat_#t~short209#1, cstrncat_#t~mem212#1, cstrncat_~s1#1.base, cstrncat_~s1#1.offset, cstrncat_~s2#1.base, cstrncat_~s2#1.offset, cstrncat_~n#1, cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset;cstrncat_~s1#1.base, cstrncat_~s1#1.offset := cstrncat_#in~s1#1.base, cstrncat_#in~s1#1.offset;cstrncat_~s2#1.base, cstrncat_~s2#1.offset := cstrncat_#in~s2#1.base, cstrncat_#in~s2#1.offset;cstrncat_~n#1 := cstrncat_#in~n#1;cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset := cstrncat_~s1#1.base, cstrncat_~s1#1.offset; 3#L367-3true [2021-12-21 22:05:17,438 INFO L793 eck$LassoCheckResult]: Loop: 3#L367-3true call cstrncat_#t~mem205#1 := read~int(cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset, 1); 16#L367-1true assume !!(49 != cstrncat_#t~mem205#1);havoc cstrncat_#t~mem205#1;cstrncat_#t~post206#1.base, cstrncat_#t~post206#1.offset := cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset;cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset := cstrncat_#t~post206#1.base, 1 + cstrncat_#t~post206#1.offset;havoc cstrncat_#t~post206#1.base, cstrncat_#t~post206#1.offset; 3#L367-3true [2021-12-21 22:05:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:05:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2021-12-21 22:05:17,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:05:17,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263697959] [2021-12-21 22:05:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:05:17,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:05:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:05:17,555 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:05:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:05:17,593 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:05:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:05:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1926, now seen corresponding path program 1 times [2021-12-21 22:05:17,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:05:17,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978133003] [2021-12-21 22:05:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:05:17,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:05:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:05:17,608 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:05:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:05:17,627 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:05:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:05:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 180553748, now seen corresponding path program 1 times [2021-12-21 22:05:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:05:17,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838607714] [2021-12-21 22:05:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:05:17,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:05:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:05:17,677 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:05:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:05:17,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:05:18,499 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:05:18,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:05:18,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:05:18,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:05:18,500 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:05:18,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:18,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:05:18,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:05:18,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncat_diffterm_alloca.i_Iteration1_Lasso [2021-12-21 22:05:18,501 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:05:18,501 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:05:18,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:18,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:05:19,332 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:05:19,336 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:05:19,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,339 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) [2021-12-21 22:05:19,343 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 [2021-12-21 22:05:19,346 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 [2021-12-21 22:05:19,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:05:19,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:05:19,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:05:19,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:05:19,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:05:19,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:05:19,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:05:19,358 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:05:19,377 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 [2021-12-21 22:05:19,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,381 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) [2021-12-21 22:05:19,382 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 [2021-12-21 22:05:19,384 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 [2021-12-21 22:05:19,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:05:19,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:05:19,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:05:19,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:05:19,394 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:05:19,394 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:05:19,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:05:19,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-21 22:05:19,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,419 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) [2021-12-21 22:05:19,420 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 [2021-12-21 22:05:19,420 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 [2021-12-21 22:05:19,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:05:19,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:05:19,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:05:19,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:05:19,441 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:05:19,441 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:05:19,453 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:05:19,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-21 22:05:19,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,470 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) [2021-12-21 22:05:19,473 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 [2021-12-21 22:05:19,474 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 [2021-12-21 22:05:19,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:05:19,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:05:19,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:05:19,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:05:19,482 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:05:19,482 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:05:19,498 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:05:19,516 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 [2021-12-21 22:05:19,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,517 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) [2021-12-21 22:05:19,518 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 [2021-12-21 22:05:19,519 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 [2021-12-21 22:05:19,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:05:19,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:05:19,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:05:19,526 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-21 22:05:19,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:05:19,527 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-21 22:05:19,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:05:19,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:05:19,546 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 [2021-12-21 22:05:19,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,547 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) [2021-12-21 22:05:19,548 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 [2021-12-21 22:05:19,550 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 [2021-12-21 22:05:19,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:05:19,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:05:19,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:05:19,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:05:19,573 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:05:19,573 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:05:19,595 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:05:19,649 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2021-12-21 22:05:19,650 INFO L444 ModelExtractionUtils]: 16 out of 55 variables were initially zero. Simplification set additionally 36 variables to zero. [2021-12-21 22:05:19,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:05:19,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:05:19,667 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) [2021-12-21 22:05:19,715 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 [2021-12-21 22:05:19,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:05:19,741 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-21 22:05:19,741 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:05:19,741 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc216#1.base)_1, ULTIMATE.start_cstrncat_~s~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc216#1.base)_1 - 1*ULTIMATE.start_cstrncat_~s~0#1.offset Supporting invariants [] [2021-12-21 22:05:19,790 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 [2021-12-21 22:05:19,818 INFO L297 tatePredicateManager]: 8 out of 9 supporting invariants were superfluous and have been removed [2021-12-21 22:05:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:05:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:05:19,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 22:05:19,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:05:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:05:19,938 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 22:05:19,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:05:19,946 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 [2021-12-21 22:05:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:05:19,986 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 [2021-12-21 22:05:19,988 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-21 22:05:20,056 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 50 states and 73 transitions. Complement of second has 8 states. [2021-12-21 22:05:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 22:05:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-21 22:05:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2021-12-21 22:05:20,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-21 22:05:20,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:05:20,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-21 22:05:20,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:05:20,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-21 22:05:20,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:05:20,068 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 73 transitions. [2021-12-21 22:05:20,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:05:20,077 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 20 states and 27 transitions. [2021-12-21 22:05:20,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-21 22:05:20,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-21 22:05:20,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2021-12-21 22:05:20,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:05:20,079 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-12-21 22:05:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2021-12-21 22:05:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-12-21 22:05:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 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) [2021-12-21 22:05:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-12-21 22:05:20,102 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-12-21 22:05:20,102 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-12-21 22:05:20,102 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:05:20,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2021-12-21 22:05:20,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:05:20,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:05:20,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:05:20,105 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:05:20,105 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:05:20,106 INFO L791 eck$LassoCheckResult]: Stem: 171#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 172#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet213#1, main_#t~nondet214#1, main_#t~nondet215#1, main_#t~malloc216#1.base, main_#t~malloc216#1.offset, main_#t~malloc217#1.base, main_#t~malloc217#1.offset, main_#t~ret218#1.base, main_#t~ret218#1.offset, main_~length1~0#1, main_~length2~0#1, main_~n~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset;main_~length1~0#1 := main_#t~nondet213#1;havoc main_#t~nondet213#1;main_~length2~0#1 := main_#t~nondet214#1;havoc main_#t~nondet214#1;main_~n~0#1 := main_#t~nondet215#1;havoc main_#t~nondet215#1; 177#L381 assume !(main_~length1~0#1 < 1); 176#L381-2 assume !(main_~length2~0#1 < 1); 174#L384-1 assume !(main_~n~0#1 < 1); 175#L387-1 assume !(main_~length1~0#1 < main_~n~0#1 || main_~length1~0#1 - main_~n~0#1 < main_~length2~0#1);call main_#t~malloc216#1.base, main_#t~malloc216#1.offset := #Ultimate.allocOnStack(main_~length1~0#1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_#t~malloc216#1.base, main_#t~malloc216#1.offset;call main_#t~malloc217#1.base, main_#t~malloc217#1.offset := #Ultimate.allocOnStack(main_~length2~0#1);main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset := main_#t~malloc217#1.base, main_#t~malloc217#1.offset;call write~int(49, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset + (main_~length1~0#1 - main_~n~0#1 - 1), 1);call write~int(49, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset + (main_~length2~0#1 - 1), 1);assume { :begin_inline_cstrncat } true;cstrncat_#in~s1#1.base, cstrncat_#in~s1#1.offset, cstrncat_#in~s2#1.base, cstrncat_#in~s2#1.offset, cstrncat_#in~n#1 := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset, main_~n~0#1;havoc cstrncat_#res#1.base, cstrncat_#res#1.offset;havoc cstrncat_#t~post206#1.base, cstrncat_#t~post206#1.offset, cstrncat_#t~mem205#1, cstrncat_#t~post210#1, cstrncat_#t~post211#1.base, cstrncat_#t~post211#1.offset, cstrncat_#t~post207#1.base, cstrncat_#t~post207#1.offset, cstrncat_#t~mem208#1, cstrncat_#t~short209#1, cstrncat_#t~mem212#1, cstrncat_~s1#1.base, cstrncat_~s1#1.offset, cstrncat_~s2#1.base, cstrncat_~s2#1.offset, cstrncat_~n#1, cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset;cstrncat_~s1#1.base, cstrncat_~s1#1.offset := cstrncat_#in~s1#1.base, cstrncat_#in~s1#1.offset;cstrncat_~s2#1.base, cstrncat_~s2#1.offset := cstrncat_#in~s2#1.base, cstrncat_#in~s2#1.offset;cstrncat_~n#1 := cstrncat_#in~n#1;cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset := cstrncat_~s1#1.base, cstrncat_~s1#1.offset; 165#L367-3 call cstrncat_#t~mem205#1 := read~int(cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset, 1); 166#L367-1 assume !(49 != cstrncat_#t~mem205#1);havoc cstrncat_#t~mem205#1; 163#L369-4 cstrncat_#t~short209#1 := 0 != cstrncat_~n#1; 164#L369 assume !cstrncat_#t~short209#1; 173#L369-2 assume !!cstrncat_#t~short209#1;havoc cstrncat_#t~post207#1.base, cstrncat_#t~post207#1.offset;havoc cstrncat_#t~mem208#1;havoc cstrncat_#t~short209#1;cstrncat_#t~post210#1 := cstrncat_~n#1;cstrncat_~n#1 := cstrncat_#t~post210#1 - 1;havoc cstrncat_#t~post210#1;cstrncat_#t~post211#1.base, cstrncat_#t~post211#1.offset := cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset;cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset := cstrncat_#t~post211#1.base, 1 + cstrncat_#t~post211#1.offset;havoc cstrncat_#t~post211#1.base, cstrncat_#t~post211#1.offset; 178#L369-4 cstrncat_#t~short209#1 := 0 != cstrncat_~n#1; 162#L369 [2021-12-21 22:05:20,106 INFO L793 eck$LassoCheckResult]: Loop: 162#L369 assume !cstrncat_#t~short209#1; 168#L369-2 assume !!cstrncat_#t~short209#1;havoc cstrncat_#t~post207#1.base, cstrncat_#t~post207#1.offset;havoc cstrncat_#t~mem208#1;havoc cstrncat_#t~short209#1;cstrncat_#t~post210#1 := cstrncat_~n#1;cstrncat_~n#1 := cstrncat_#t~post210#1 - 1;havoc cstrncat_#t~post210#1;cstrncat_#t~post211#1.base, cstrncat_#t~post211#1.offset := cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset;cstrncat_~s~0#1.base, cstrncat_~s~0#1.offset := cstrncat_#t~post211#1.base, 1 + cstrncat_#t~post211#1.offset;havoc cstrncat_#t~post211#1.base, cstrncat_#t~post211#1.offset; 161#L369-4 cstrncat_#t~short209#1 := 0 != cstrncat_~n#1; 162#L369 [2021-12-21 22:05:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:05:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1662025132, now seen corresponding path program 1 times [2021-12-21 22:05:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:05:20,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886355775] [2021-12-21 22:05:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:05:20,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:05:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:05:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:05:20,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:05:20,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886355775] [2021-12-21 22:05:20,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886355775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:05:20,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:05:20,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:05:20,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327968072] [2021-12-21 22:05:20,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:05:20,169 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:05:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:05:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash 76643, now seen corresponding path program 1 times [2021-12-21 22:05:20,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:05:20,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512402192] [2021-12-21 22:05:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:05:20,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:05:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:05:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:05:20,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:05:20,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512402192] [2021-12-21 22:05:20,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512402192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:05:20,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:05:20,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 22:05:20,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119481286] [2021-12-21 22:05:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:05:20,180 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:05:20,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:05:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:05:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:05:20,183 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-12-21 22:05:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:05:20,191 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-12-21 22:05:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:05:20,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2021-12-21 22:05:20,193 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:05:20,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2021-12-21 22:05:20,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:05:20,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:05:20,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:05:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:05:20,193 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:05:20,193 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:05:20,194 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:05:20,194 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:05:20,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 22:05:20,194 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:05:20,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 22:05:20,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:05:20 BoogieIcfgContainer [2021-12-21 22:05:20,200 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:05:20,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:05:20,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:05:20,201 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:05:20,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:05:17" (3/4) ... [2021-12-21 22:05:20,203 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 22:05:20,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:05:20,204 INFO L158 Benchmark]: Toolchain (without parser) took 3791.83ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 56.8MB in the beginning and 63.6MB in the end (delta: -6.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-12-21 22:05:20,205 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 46.0MB in the beginning and 45.9MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:05:20,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.61ms. Allocated memory is still 90.2MB. Free memory was 56.7MB in the beginning and 58.0MB in the end (delta: -1.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 22:05:20,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.43ms. Allocated memory is still 90.2MB. Free memory was 57.8MB in the beginning and 55.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:05:20,206 INFO L158 Benchmark]: Boogie Preprocessor took 26.71ms. Allocated memory is still 90.2MB. Free memory was 55.8MB in the beginning and 54.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:05:20,207 INFO L158 Benchmark]: RCFGBuilder took 455.49ms. Allocated memory is still 90.2MB. Free memory was 54.5MB in the beginning and 43.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:05:20,207 INFO L158 Benchmark]: BuchiAutomizer took 2860.59ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 43.1MB in the beginning and 63.6MB in the end (delta: -20.5MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. [2021-12-21 22:05:20,208 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 109.1MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:05:20,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 46.0MB in the beginning and 45.9MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.61ms. Allocated memory is still 90.2MB. Free memory was 56.7MB in the beginning and 58.0MB in the end (delta: -1.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.43ms. Allocated memory is still 90.2MB. Free memory was 57.8MB in the beginning and 55.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.71ms. Allocated memory is still 90.2MB. Free memory was 55.8MB in the beginning and 54.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 455.49ms. Allocated memory is still 90.2MB. Free memory was 54.5MB in the beginning and 43.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2860.59ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 43.1MB in the beginning and 63.6MB in the end (delta: -20.5MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 109.1MB. Free memory is still 63.6MB. 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length1 * sizeof(char))] + -1 * s and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 3 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 34 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital195 mio100 ax100 hnf100 lsp96 ukn78 mio100 lsp51 div100 bol100 ite100 ukn100 eq192 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 22:05:20,246 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