./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/array-memsafety/openbsd_cmemchr-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 007fc8a389a67fb47c7d326d3f1d284696dfe5de13661e77d6d1bf7cce285194 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:49:58,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:49:58,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:49:58,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:49:58,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:49:58,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:49:58,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:49:58,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:49:58,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:49:58,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:49:58,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:49:58,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:49:58,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:49:58,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:49:58,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:49:58,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:49:58,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:49:58,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:49:58,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:49:58,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:49:58,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:49:58,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:49:58,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:49:58,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:49:58,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:49:58,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:49:58,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:49:58,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:49:58,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:49:58,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:49:58,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:49:58,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:49:58,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:49:58,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:49:58,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:49:58,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:49:58,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:49:58,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:49:58,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:49:58,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:49:58,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:49:58,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:49:58,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:49:58,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:49:58,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:49:58,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:49:58,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:49:58,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:49:58,328 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:49:58,328 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:49:58,329 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:49:58,329 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:49:58,329 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:49:58,330 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:49:58,330 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:49:58,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:49:58,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:49:58,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:49:58,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:49:58,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:49:58,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:49:58,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:49:58,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:49:58,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:49:58,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:49:58,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:49:58,332 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:49:58,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:49:58,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:49:58,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:49:58,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:49:58,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:49:58,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:49:58,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:49:58,335 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:49:58,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 007fc8a389a67fb47c7d326d3f1d284696dfe5de13661e77d6d1bf7cce285194 [2021-12-21 22:49:58,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:49:58,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:49:58,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:49:58,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:49:58,575 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:49:58,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2021-12-21 22:49:58,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a94595a7/e4b45cf60c534c5aaffe53cd4730caac/FLAG01f52e6e5 [2021-12-21 22:49:59,037 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:49:59,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2021-12-21 22:49:59,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a94595a7/e4b45cf60c534c5aaffe53cd4730caac/FLAG01f52e6e5 [2021-12-21 22:49:59,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a94595a7/e4b45cf60c534c5aaffe53cd4730caac [2021-12-21 22:49:59,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:49:59,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:49:59,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:49:59,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:49:59,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:49:59,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e3f3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59, skipping insertion in model container [2021-12-21 22:49:59,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:49:59,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:49:59,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:49:59,668 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:49:59,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:49:59,701 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:49:59,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59 WrapperNode [2021-12-21 22:49:59,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:49:59,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:49:59,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:49:59,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:49:59,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,741 INFO L137 Inliner]: procedures = 117, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2021-12-21 22:49:59,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:49:59,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:49:59,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:49:59,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:49:59,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:49:59,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:49:59,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:49:59,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:49:59,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (1/1) ... [2021-12-21 22:49:59,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:49:59,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:49:59,813 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 22:49:59,821 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 22:49:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 22:49:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 22:49:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 22:49:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 22:49:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:49:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:49:59,898 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:49:59,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:49:59,989 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:49:59,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:49:59,994 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:49:59,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:49:59 BoogieIcfgContainer [2021-12-21 22:49:59,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:49:59,996 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:49:59,996 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:49:59,999 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:49:59,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:50:00,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:49:59" (1/3) ... [2021-12-21 22:50:00,001 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b8fe6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:50:00, skipping insertion in model container [2021-12-21 22:50:00,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:50:00,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:49:59" (2/3) ... [2021-12-21 22:50:00,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b8fe6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:50:00, skipping insertion in model container [2021-12-21 22:50:00,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:50:00,002 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:49:59" (3/3) ... [2021-12-21 22:50:00,003 INFO L388 chiAutomizerObserver]: Analyzing ICFG openbsd_cmemchr-alloca-2.i [2021-12-21 22:50:00,064 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:50:00,064 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:50:00,064 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:50:00,064 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:50:00,064 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:50:00,064 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:50:00,064 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:50:00,064 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:50:00,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 22:50:00,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-21 22:50:00,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:50:00,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:50:00,103 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 22:50:00,103 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:50:00,103 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:50:00,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 22:50:00,105 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-21 22:50:00,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:50:00,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:50:00,106 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 22:50:00,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:50:00,110 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; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 8#L529true assume !(main_~length~0#1 < 1); 16#L529-2true assume !(main_~n~0#1 < 1); 3#L532-1true call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 7#L537-3true [2021-12-21 22:50:00,111 INFO L793 eck$LassoCheckResult]: Loop: 7#L537-3true assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 14#L537-2true main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 7#L537-3true [2021-12-21 22:50:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2021-12-21 22:50:00,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:00,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440179284] [2021-12-21 22:50:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:00,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:00,228 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:00,265 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2021-12-21 22:50:00,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758687166] [2021-12-21 22:50:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:00,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:00,288 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:00,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2021-12-21 22:50:00,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:00,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155285268] [2021-12-21 22:50:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:00,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:00,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:00,358 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:00,656 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:50:00,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:50:00,657 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:50:00,657 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:50:00,657 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:50:00,657 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:00,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:50:00,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:50:00,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemchr-alloca-2.i_Iteration1_Lasso [2021-12-21 22:50:00,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:50:00,658 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:50:00,671 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 22:50:00,778 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 22:50:00,780 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 22:50:00,782 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 22:50:00,784 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 22:50:00,786 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 22:50:00,788 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 22:50:00,790 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 22:50:00,793 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 22:50:00,794 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 22:50:00,797 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 22:50:00,799 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 22:50:00,802 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 22:50:00,803 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 22:50:00,805 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 22:50:00,992 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:50:00,995 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:50:00,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:00,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:00,998 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 22:50:00,999 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 22:50:01,002 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 22:50:01,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:50:01,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:50:01,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:50:01,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:50:01,014 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:50:01,014 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:50:01,027 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:50:01,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-21 22:50:01,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:01,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:01,047 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 22:50:01,048 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 22:50:01,050 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 22:50:01,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:50:01,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:50:01,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:50:01,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:50:01,063 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:50:01,063 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:50:01,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:50:01,101 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2021-12-21 22:50:01,101 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2021-12-21 22:50:01,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:01,105 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 22:50:01,106 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 22:50:01,121 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:50:01,139 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-21 22:50:01,139 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:50:01,140 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nondetArea~0#1.offset, ULTIMATE.start_main_~i~0#1, v_rep(select #length ULTIMATE.start_main_~nondetArea~0#1.base)_1) = -1*ULTIMATE.start_main_~nondetArea~0#1.offset - 1*ULTIMATE.start_main_~i~0#1 + 1*v_rep(select #length ULTIMATE.start_main_~nondetArea~0#1.base)_1 Supporting invariants [] [2021-12-21 22:50:01,172 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 22:50:01,180 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-21 22:50:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:01,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:50:01,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:50:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:01,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:50:01,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:50:01,250 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 22:50:01,270 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 22:50:01,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 22:50:01,308 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 42 states and 59 transitions. Complement of second has 7 states. [2021-12-21 22:50:01,310 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 22:50:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 22:50:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-12-21 22:50:01,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-21 22:50:01,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:50:01,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-21 22:50:01,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:50:01,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-21 22:50:01,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:50:01,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 59 transitions. [2021-12-21 22:50:01,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:50:01,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 14 states and 18 transitions. [2021-12-21 22:50:01,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-21 22:50:01,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 22:50:01,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2021-12-21 22:50:01,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:50:01,331 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-21 22:50:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2021-12-21 22:50:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-21 22:50:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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 22:50:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-12-21 22:50:01,346 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-21 22:50:01,346 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-21 22:50:01,347 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:50:01,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-12-21 22:50:01,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:50:01,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:50:01,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:50:01,348 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:50:01,348 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:50:01,348 INFO L791 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 123#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 128#L529 assume !(main_~length~0#1 < 1); 129#L529-2 assume !(main_~n~0#1 < 1); 120#L532-1 call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 121#L537-3 assume !(main_~i~0#1 < main_~n~0#1); 124#L537-4 assume { :begin_inline_cmemchr } true;cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset, cmemchr_#in~c#1, cmemchr_#in~n#1 := main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset, main_~c~0#1, main_~n~0#1;havoc cmemchr_#res#1.base, cmemchr_#res#1.offset;havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, cmemchr_#t~mem4#1, cmemchr_#t~pre2#1, cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset, cmemchr_~s#1.base, cmemchr_~s#1.offset, cmemchr_~c#1, cmemchr_~n#1;cmemchr_~s#1.base, cmemchr_~s#1.offset := cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset;cmemchr_~c#1 := cmemchr_#in~c#1;cmemchr_~n#1 := cmemchr_#in~n#1; 125#L516 assume 0 != cmemchr_~n#1 % 4294967296;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_~s#1.base, cmemchr_~s#1.offset; 130#L518-4 [2021-12-21 22:50:01,348 INFO L793 eck$LassoCheckResult]: Loop: 130#L518-4 cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset := cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_#t~post3#1.base, 1 + cmemchr_#t~post3#1.offset;call cmemchr_#t~mem4#1 := read~int(cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, 1); 131#L519 assume !(cmemchr_#t~mem4#1 % 256 == cmemchr_~c#1 % 256);havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset;havoc cmemchr_#t~mem4#1; 133#L518-1 cmemchr_#t~pre2#1 := cmemchr_~n#1 - 1;cmemchr_~n#1 := cmemchr_~n#1 - 1; 132#L518-2 assume !!(0 != cmemchr_#t~pre2#1 % 4294967296);havoc cmemchr_#t~pre2#1; 130#L518-4 [2021-12-21 22:50:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash 180430706, now seen corresponding path program 1 times [2021-12-21 22:50:01,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:01,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310161832] [2021-12-21 22:50:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:01,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:01,383 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 22:50:01,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:50:01,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310161832] [2021-12-21 22:50:01,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310161832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:50:01,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:50:01,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 22:50:01,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450796217] [2021-12-21 22:50:01,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:50:01,386 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:50:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:01,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 1 times [2021-12-21 22:50:01,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:01,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822304590] [2021-12-21 22:50:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:01,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:01,395 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:01,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:01,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:50:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 22:50:01,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 22:50:01,465 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 22:50:01,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:50:01,486 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-12-21 22:50:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 22:50:01,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-12-21 22:50:01,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:50:01,487 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2021-12-21 22:50:01,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-21 22:50:01,488 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 22:50:01,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2021-12-21 22:50:01,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:50:01,488 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-12-21 22:50:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2021-12-21 22:50:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-21 22:50:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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 22:50:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-12-21 22:50:01,489 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-12-21 22:50:01,489 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-12-21 22:50:01,489 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:50:01,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-12-21 22:50:01,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:50:01,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:50:01,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:50:01,490 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:50:01,491 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:50:01,491 INFO L791 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 159#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 164#L529 assume !(main_~length~0#1 < 1); 165#L529-2 assume !(main_~n~0#1 < 1); 156#L532-1 call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 157#L537-3 assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 162#L537-2 main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 163#L537-3 assume !(main_~i~0#1 < main_~n~0#1); 160#L537-4 assume { :begin_inline_cmemchr } true;cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset, cmemchr_#in~c#1, cmemchr_#in~n#1 := main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset, main_~c~0#1, main_~n~0#1;havoc cmemchr_#res#1.base, cmemchr_#res#1.offset;havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, cmemchr_#t~mem4#1, cmemchr_#t~pre2#1, cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset, cmemchr_~s#1.base, cmemchr_~s#1.offset, cmemchr_~c#1, cmemchr_~n#1;cmemchr_~s#1.base, cmemchr_~s#1.offset := cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset;cmemchr_~c#1 := cmemchr_#in~c#1;cmemchr_~n#1 := cmemchr_#in~n#1; 161#L516 assume 0 != cmemchr_~n#1 % 4294967296;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_~s#1.base, cmemchr_~s#1.offset; 166#L518-4 [2021-12-21 22:50:01,491 INFO L793 eck$LassoCheckResult]: Loop: 166#L518-4 cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset := cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_#t~post3#1.base, 1 + cmemchr_#t~post3#1.offset;call cmemchr_#t~mem4#1 := read~int(cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, 1); 167#L519 assume !(cmemchr_#t~mem4#1 % 256 == cmemchr_~c#1 % 256);havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset;havoc cmemchr_#t~mem4#1; 169#L518-1 cmemchr_#t~pre2#1 := cmemchr_~n#1 - 1;cmemchr_~n#1 := cmemchr_~n#1 - 1; 168#L518-2 assume !!(0 != cmemchr_#t~pre2#1 % 4294967296);havoc cmemchr_#t~pre2#1; 166#L518-4 [2021-12-21 22:50:01,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1596934864, now seen corresponding path program 1 times [2021-12-21 22:50:01,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:01,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772347573] [2021-12-21 22:50:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:01,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:01,502 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:01,522 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 2 times [2021-12-21 22:50:01,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:01,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080591643] [2021-12-21 22:50:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:01,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:01,529 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:01,534 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1308516218, now seen corresponding path program 1 times [2021-12-21 22:50:01,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:01,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976457944] [2021-12-21 22:50:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:01,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:01,596 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 22:50:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:50:01,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:50:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976457944] [2021-12-21 22:50:01,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976457944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:50:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393351617] [2021-12-21 22:50:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:01,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:50:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:01,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:50:01,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 22:50:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:01,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 22:50:01,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:50:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:50:01,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:50:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:50:01,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393351617] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:50:01,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:50:01,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-12-21 22:50:01,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768528941] [2021-12-21 22:50:01,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:50:02,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:50:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 22:50:02,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-21 22:50:02,006 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 22:50:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:50:02,145 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-12-21 22:50:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 22:50:02,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 30 transitions. [2021-12-21 22:50:02,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:50:02,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 17 states and 19 transitions. [2021-12-21 22:50:02,148 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-21 22:50:02,148 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 22:50:02,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2021-12-21 22:50:02,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:50:02,148 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-21 22:50:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2021-12-21 22:50:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-12-21 22:50:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 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 22:50:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-12-21 22:50:02,149 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-12-21 22:50:02,149 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-12-21 22:50:02,149 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:50:02,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2021-12-21 22:50:02,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:50:02,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:50:02,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:50:02,150 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:50:02,150 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:50:02,150 INFO L791 eck$LassoCheckResult]: Stem: 308#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 309#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 315#L529 assume !(main_~length~0#1 < 1); 316#L529-2 assume !(main_~n~0#1 < 1); 306#L532-1 call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 307#L537-3 assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 312#L537-2 main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 313#L537-3 assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 314#L537-2 main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 320#L537-3 assume !(main_~i~0#1 < main_~n~0#1); 310#L537-4 assume { :begin_inline_cmemchr } true;cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset, cmemchr_#in~c#1, cmemchr_#in~n#1 := main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset, main_~c~0#1, main_~n~0#1;havoc cmemchr_#res#1.base, cmemchr_#res#1.offset;havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, cmemchr_#t~mem4#1, cmemchr_#t~pre2#1, cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset, cmemchr_~s#1.base, cmemchr_~s#1.offset, cmemchr_~c#1, cmemchr_~n#1;cmemchr_~s#1.base, cmemchr_~s#1.offset := cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset;cmemchr_~c#1 := cmemchr_#in~c#1;cmemchr_~n#1 := cmemchr_#in~n#1; 311#L516 assume 0 != cmemchr_~n#1 % 4294967296;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_~s#1.base, cmemchr_~s#1.offset; 317#L518-4 [2021-12-21 22:50:02,150 INFO L793 eck$LassoCheckResult]: Loop: 317#L518-4 cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset := cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_#t~post3#1.base, 1 + cmemchr_#t~post3#1.offset;call cmemchr_#t~mem4#1 := read~int(cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, 1); 318#L519 assume !(cmemchr_#t~mem4#1 % 256 == cmemchr_~c#1 % 256);havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset;havoc cmemchr_#t~mem4#1; 321#L518-1 cmemchr_#t~pre2#1 := cmemchr_~n#1 - 1;cmemchr_~n#1 := cmemchr_~n#1 - 1; 319#L518-2 assume !!(0 != cmemchr_#t~pre2#1 % 4294967296);havoc cmemchr_#t~pre2#1; 317#L518-4 [2021-12-21 22:50:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1352797870, now seen corresponding path program 2 times [2021-12-21 22:50:02,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:02,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245092304] [2021-12-21 22:50:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:02,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:02,160 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:02,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 3 times [2021-12-21 22:50:02,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:02,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825646643] [2021-12-21 22:50:02,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:02,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:02,181 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:02,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash -24116136, now seen corresponding path program 2 times [2021-12-21 22:50:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:50:02,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681096924] [2021-12-21 22:50:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:50:02,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:50:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:02,207 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:50:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:50:02,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:50:02,588 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:50:02,588 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:50:02,588 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:50:02,588 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:50:02,588 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:50:02,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:02,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:50:02,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:50:02,589 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemchr-alloca-2.i_Iteration4_Lasso [2021-12-21 22:50:02,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:50:02,589 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:50:02,591 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 22:50:02,815 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 22:50:02,817 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 22:50:02,818 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 22:50:02,820 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 22:50:02,821 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 22:50:02,823 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 22:50:02,825 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 22:50:02,826 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 22:50:02,828 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 22:50:02,830 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 22:50:02,831 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 22:50:02,833 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 22:50:02,835 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 22:50:02,838 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 22:50:02,840 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 22:50:02,841 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 22:50:02,843 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 22:50:02,844 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 22:50:02,846 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 22:50:02,848 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 22:50:03,283 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:50:03,283 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:50:03,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:03,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:03,284 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 22:50:03,330 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 22:50:03,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:50:03,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:50:03,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:50:03,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:50:03,338 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:50:03,338 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:50:03,341 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 22:50:03,355 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:50:03,383 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 22:50:03,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:03,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:03,435 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 22:50:03,468 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 22:50:03,468 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 22:50:03,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:50:03,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:50:03,475 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-21 22:50:03,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:50:03,485 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-21 22:50:03,486 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-21 22:50:03,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:50:03,538 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 22:50:03,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:03,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:03,539 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 22:50:03,555 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 22:50:03,556 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 22:50:03,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:50:03,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:50:03,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:50:03,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:50:03,565 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:50:03,565 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:50:03,585 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:50:03,617 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 22:50:03,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:03,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:03,619 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) [2021-12-21 22:50:03,639 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 22:50:03,641 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 [2021-12-21 22:50:03,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:50:03,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:50:03,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:50:03,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:50:03,655 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:50:03,655 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:50:03,679 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:50:03,707 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2021-12-21 22:50:03,707 INFO L444 ModelExtractionUtils]: 9 out of 40 variables were initially zero. Simplification set additionally 28 variables to zero. [2021-12-21 22:50:03,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:50:03,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:50:03,709 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) [2021-12-21 22:50:03,710 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 [2021-12-21 22:50:03,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:50:03,738 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-21 22:50:03,738 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:50:03,738 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cmemchr_~p~0#1.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc8#1.base)_2) = -1*ULTIMATE.start_cmemchr_~p~0#1.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc8#1.base)_2 Supporting invariants [] [2021-12-21 22:50:03,756 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 [2021-12-21 22:50:03,767 INFO L297 tatePredicateManager]: 5 out of 6 supporting invariants were superfluous and have been removed [2021-12-21 22:50:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:50:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:03,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 22:50:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:50:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:50:03,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 22:50:03,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:50:03,866 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 22:50:03,867 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2021-12-21 22:50:03,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 22:50:03,909 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 20 states and 22 transitions. Complement of second has 6 states. [2021-12-21 22:50:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 22:50:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 22:50:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2021-12-21 22:50:03,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-21 22:50:03,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:50:03,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-21 22:50:03,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:50:03,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-21 22:50:03,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:50:03,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2021-12-21 22:50:03,912 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:50:03,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2021-12-21 22:50:03,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:50:03,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:50:03,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:50:03,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:50:03,912 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:50:03,912 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:50:03,912 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:50:03,912 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-21 22:50:03,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 22:50:03,912 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:50:03,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 22:50:03,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:50:03 BoogieIcfgContainer [2021-12-21 22:50:03,917 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:50:03,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:50:03,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:50:03,917 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:50:03,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:49:59" (3/4) ... [2021-12-21 22:50:03,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 22:50:03,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:50:03,920 INFO L158 Benchmark]: Toolchain (without parser) took 4507.02ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 98.5MB in the beginning and 98.1MB in the end (delta: 387.7kB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2021-12-21 22:50:03,920 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:50:03,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.37ms. Allocated memory is still 121.6MB. Free memory was 98.5MB in the beginning and 92.1MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:50:03,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.61ms. Allocated memory is still 121.6MB. Free memory was 92.1MB in the beginning and 90.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:50:03,921 INFO L158 Benchmark]: Boogie Preprocessor took 19.85ms. Allocated memory is still 121.6MB. Free memory was 90.1MB in the beginning and 89.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:50:03,921 INFO L158 Benchmark]: RCFGBuilder took 233.60ms. Allocated memory is still 121.6MB. Free memory was 89.1MB in the beginning and 79.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:50:03,922 INFO L158 Benchmark]: BuchiAutomizer took 3920.86ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 78.6MB in the beginning and 98.1MB in the end (delta: -19.5MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2021-12-21 22:50:03,922 INFO L158 Benchmark]: Witness Printer took 2.20ms. Allocated memory is still 159.4MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:50:03,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.37ms. Allocated memory is still 121.6MB. Free memory was 98.5MB in the beginning and 92.1MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.61ms. Allocated memory is still 121.6MB. Free memory was 92.1MB in the beginning and 90.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.85ms. Allocated memory is still 121.6MB. Free memory was 90.1MB in the beginning and 89.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 233.60ms. Allocated memory is still 121.6MB. Free memory was 89.1MB in the beginning and 79.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3920.86ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 78.6MB in the beginning and 98.1MB in the end (delta: -19.5MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Witness Printer took 2.20ms. Allocated memory is still 159.4MB. Free memory is still 98.1MB. 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + -1 * nondetArea + unknown-#length-unknown[nondetArea] and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (n * sizeof(char))] + -1 * p and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 49 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital126 mio100 ax115 hnf100 lsp79 ukn93 mio100 lsp55 div125 bol100 ite100 ukn100 eq173 hnf90 smp86 dnf100 smp100 tf100 neg99 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 123ms VariablesStem: 6 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 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 22:50:03,951 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 [2021-12-21 22:50:04,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 22:50:04,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE