./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/nec40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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/loops/nec40.c -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 a8ae9bcd5a551c2558190e4ca1b7d8543f9adf38b9d950429bd2292753c8e588 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:25:40,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:25:40,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:25:41,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:25:41,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:25:41,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:25:41,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:25:41,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:25:41,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:25:41,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:25:41,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:25:41,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:25:41,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:25:41,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:25:41,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:25:41,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:25:41,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:25:41,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:25:41,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:25:41,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:25:41,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:25:41,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:25:41,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:25:41,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:25:41,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:25:41,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:25:41,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:25:41,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:25:41,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:25:41,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:25:41,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:25:41,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:25:41,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:25:41,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:25:41,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:25:41,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:25:41,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:25:41,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:25:41,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:25:41,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:25:41,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:25:41,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:25:41,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:25:41,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:25:41,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:25:41,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:25:41,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:25:41,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:25:41,099 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:25:41,099 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:25:41,099 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:25:41,100 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:25:41,100 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:25:41,100 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:25:41,101 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:25:41,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:25:41,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:25:41,101 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:25:41,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:25:41,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:25:41,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:25:41,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:25:41,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:25:41,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:25:41,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:25:41,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:25:41,103 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:25:41,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:25:41,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:25:41,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:25:41,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:25:41,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:25:41,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:25:41,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:25:41,105 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:25:41,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ae9bcd5a551c2558190e4ca1b7d8543f9adf38b9d950429bd2292753c8e588 [2021-12-14 23:25:41,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:25:41,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:25:41,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:25:41,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:25:41,300 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:25:41,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/nec40.c [2021-12-14 23:25:41,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758ecc76e/d1f3b46e148541639bc04c48169e9112/FLAG6f27b5138 [2021-12-14 23:25:41,685 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:25:41,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/nec40.c [2021-12-14 23:25:41,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758ecc76e/d1f3b46e148541639bc04c48169e9112/FLAG6f27b5138 [2021-12-14 23:25:42,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758ecc76e/d1f3b46e148541639bc04c48169e9112 [2021-12-14 23:25:42,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:25:42,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:25:42,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:25:42,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:25:42,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:25:42,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad1776d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42, skipping insertion in model container [2021-12-14 23:25:42,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:25:42,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:25:42,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/nec40.c[317,330] [2021-12-14 23:25:42,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:25:42,284 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:25:42,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/nec40.c[317,330] [2021-12-14 23:25:42,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:25:42,308 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:25:42,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42 WrapperNode [2021-12-14 23:25:42,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:25:42,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:25:42,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:25:42,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:25:42,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,333 INFO L137 Inliner]: procedures = 13, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2021-12-14 23:25:42,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:25:42,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:25:42,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:25:42,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:25:42,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:25:42,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:25:42,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:25:42,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:25:42,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (1/1) ... [2021-12-14 23:25:42,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:25:42,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:25:42,378 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) [2021-12-14 23:25:42,384 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 [2021-12-14 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:25:42,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:25:42,451 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:25:42,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:25:42,537 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:25:42,541 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:25:42,542 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:25:42,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:25:42 BoogieIcfgContainer [2021-12-14 23:25:42,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:25:42,544 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:25:42,544 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:25:42,556 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:25:42,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:25:42,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:25:42" (1/3) ... [2021-12-14 23:25:42,558 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75a311a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:25:42, skipping insertion in model container [2021-12-14 23:25:42,558 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:25:42,558 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:42" (2/3) ... [2021-12-14 23:25:42,558 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75a311a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:25:42, skipping insertion in model container [2021-12-14 23:25:42,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:25:42,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:25:42" (3/3) ... [2021-12-14 23:25:42,560 INFO L388 chiAutomizerObserver]: Analyzing ICFG nec40.c [2021-12-14 23:25:42,589 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:25:42,589 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:25:42,590 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:25:42,590 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:25:42,590 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:25:42,590 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:25:42,590 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:25:42,590 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:25:42,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.3846153846153846) 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) [2021-12-14 23:25:42,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:25:42,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:25:42,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:25:42,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:25:42,617 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:25:42,617 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:25:42,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.3846153846153846) 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) [2021-12-14 23:25:42,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:25:42,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:25:42,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:25:42,619 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:25:42,619 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:25:42,623 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3);~#x~0.base, ~#x~0.offset := 4, 0;call #Ultimate.allocInit(100, 4);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);~#y~0.base, ~#y~0.offset := 5, 0;call #Ultimate.allocInit(100, 5);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem6#1, main_#t~post7#1, main_#t~mem5#1, main_#t~mem8#1;~k~0 := main_#t~nondet4#1;havoc main_#t~nondet4#1;~i~0 := 0; 14#L20-3true [2021-12-14 23:25:42,624 INFO L793 eck$LassoCheckResult]: Loop: 14#L20-3true call main_#t~mem5#1 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); 15#L20-1true assume !!(0 != main_#t~mem5#1);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem6#1, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem6#1;main_#t~post7#1 := ~i~0;~i~0 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 14#L20-3true [2021-12-14 23:25:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:25:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:25:42,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:25:42,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513478493] [2021-12-14 23:25:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:25:42,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:25:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:25:42,736 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:25:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:25:42,756 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:25:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:25:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2021-12-14 23:25:42,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:25:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031797836] [2021-12-14 23:25:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:25:42,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:25:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:25:42,813 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:25:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:25:42,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:25:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:25:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-14 23:25:42,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:25:42,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294405207] [2021-12-14 23:25:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:25:42,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:25:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:25:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:25:42,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:25:42,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294405207] [2021-12-14 23:25:42,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294405207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:25:42,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:25:42,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:25:42,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117435245] [2021-12-14 23:25:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:25:43,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:25:43,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:25:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:25:43,110 INFO L87 Difference]: Start difference. First operand has 14 states, 13 states have (on average 1.3846153846153846) 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) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-14 23:25:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:25:43,148 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-12-14 23:25:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 23:25:43,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2021-12-14 23:25:43,160 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:25:43,162 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2021-12-14 23:25:43,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 23:25:43,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 23:25:43,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 23:25:43,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:25:43,165 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:25:43,165 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:25:43,165 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:25:43,165 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:25:43,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 23:25:43,166 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:25:43,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 23:25:43,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:25:43 BoogieIcfgContainer [2021-12-14 23:25:43,173 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:25:43,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:25:43,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:25:43,174 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:25:43,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:25:42" (3/4) ... [2021-12-14 23:25:43,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 23:25:43,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:25:43,180 INFO L158 Benchmark]: Toolchain (without parser) took 1032.87ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.3MB in the beginning and 74.6MB in the end (delta: -16.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-12-14 23:25:43,180 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 90.2MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:25:43,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.79ms. Allocated memory is still 90.2MB. Free memory was 58.2MB in the beginning and 65.6MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:25:43,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.22ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 64.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:25:43,184 INFO L158 Benchmark]: Boogie Preprocessor took 20.83ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 63.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:25:43,189 INFO L158 Benchmark]: RCFGBuilder took 188.22ms. Allocated memory is still 90.2MB. Free memory was 63.0MB in the beginning and 53.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:25:43,189 INFO L158 Benchmark]: BuchiAutomizer took 629.31ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 53.4MB in the beginning and 75.2MB in the end (delta: -21.8MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-14 23:25:43,190 INFO L158 Benchmark]: Witness Printer took 5.01ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 74.6MB in the end (delta: 618.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:25:43,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 90.2MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.79ms. Allocated memory is still 90.2MB. Free memory was 58.2MB in the beginning and 65.6MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.22ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 64.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.83ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 63.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 188.22ms. Allocated memory is still 90.2MB. Free memory was 63.0MB in the beginning and 53.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 629.31ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 53.4MB in the beginning and 75.2MB in the end (delta: -21.8MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 5.01ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 74.6MB in the end (delta: 618.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: 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! [2021-12-14 23:25:43,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE