./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-acceleration/phases_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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/loop-acceleration/phases_2-2.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 c973e7f310a848892a18e3f534717b85b3f4d9e6c87fd06bd7bcf01c28300fa4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:40:06,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:40:06,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:40:06,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:40:06,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:40:06,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:40:06,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:40:06,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:40:06,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:40:06,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:40:06,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:40:06,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:40:06,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:40:06,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:40:06,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:40:06,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:40:06,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:40:06,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:40:06,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:40:06,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:40:06,312 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:40:06,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:40:06,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:40:06,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:40:06,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:40:06,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:40:06,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:40:06,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:40:06,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:40:06,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:40:06,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:40:06,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:40:06,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:40:06,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:40:06,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:40:06,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:40:06,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:40:06,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:40:06,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:40:06,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:40:06,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:40:06,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:40:06,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 15:40:06,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:40:06,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:40:06,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:40:06,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:40:06,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:40:06,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:40:06,353 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:40:06,353 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:40:06,353 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:40:06,354 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:40:06,354 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:40:06,354 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:40:06,354 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:40:06,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:40:06,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:40:06,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:40:06,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 15:40:06,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:40:06,356 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:40:06,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:40:06,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:40:06,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:40:06,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:40:06,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:40:06,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:40:06,358 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:40:06,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c973e7f310a848892a18e3f534717b85b3f4d9e6c87fd06bd7bcf01c28300fa4 [2022-07-14 15:40:06,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:40:06,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:40:06,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:40:06,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:40:06,570 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:40:06,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2022-07-14 15:40:06,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c267ca7/5cca51d084644dfabefafe75ab7c14a9/FLAG56ecc62ea [2022-07-14 15:40:06,965 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:40:06,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2022-07-14 15:40:06,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c267ca7/5cca51d084644dfabefafe75ab7c14a9/FLAG56ecc62ea [2022-07-14 15:40:06,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c267ca7/5cca51d084644dfabefafe75ab7c14a9 [2022-07-14 15:40:06,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:40:06,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:40:06,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:40:06,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:40:06,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:40:06,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:40:06" (1/1) ... [2022-07-14 15:40:06,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51de6dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:06, skipping insertion in model container [2022-07-14 15:40:06,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:40:06" (1/1) ... [2022-07-14 15:40:06,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:40:07,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:40:07,152 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/loop-acceleration/phases_2-2.c[459,472] [2022-07-14 15:40:07,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:40:07,166 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:40:07,176 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/loop-acceleration/phases_2-2.c[459,472] [2022-07-14 15:40:07,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:40:07,192 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:40:07,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07 WrapperNode [2022-07-14 15:40:07,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:40:07,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:40:07,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:40:07,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:40:07,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,215 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-07-14 15:40:07,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:40:07,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:40:07,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:40:07,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:40:07,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:40:07,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:40:07,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:40:07,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:40:07,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (1/1) ... [2022-07-14 15:40:07,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:07,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:07,297 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) [2022-07-14 15:40:07,314 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 [2022-07-14 15:40:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 15:40:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 15:40:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:40:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:40:07,372 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:40:07,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:40:07,445 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:40:07,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:40:07,449 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 15:40:07,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:40:07 BoogieIcfgContainer [2022-07-14 15:40:07,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:40:07,451 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:40:07,451 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:40:07,454 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:40:07,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:40:07,455 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:40:06" (1/3) ... [2022-07-14 15:40:07,455 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3439b31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:40:07, skipping insertion in model container [2022-07-14 15:40:07,455 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:40:07,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:07" (2/3) ... [2022-07-14 15:40:07,456 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3439b31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:40:07, skipping insertion in model container [2022-07-14 15:40:07,456 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:40:07,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:40:07" (3/3) ... [2022-07-14 15:40:07,457 INFO L354 chiAutomizerObserver]: Analyzing ICFG phases_2-2.c [2022-07-14 15:40:07,492 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:40:07,493 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:40:07,493 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:40:07,493 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:40:07,493 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:40:07,493 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:40:07,493 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:40:07,494 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:40:07,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2022-07-14 15:40:07,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 15:40:07,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:40:07,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:40:07,512 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 15:40:07,512 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 15:40:07,512 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:40:07,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2022-07-14 15:40:07,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 15:40:07,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:40:07,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:40:07,514 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 15:40:07,514 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 15:40:07,518 INFO L752 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(13, 2);call #Ultimate.allocInit(12, 3); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := 1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 7#L21true assume !!(main_~y~0#1 % 4294967296 > 0); 5#L24-2true [2022-07-14 15:40:07,519 INFO L754 eck$LassoCheckResult]: Loop: 5#L24-2true assume !!(main_~x~0#1 % 4294967296 < main_~y~0#1 % 4294967296); 9#L24true assume main_~x~0#1 % 4294967296 < (if main_~y~0#1 % 4294967296 < 0 && 0 != main_~y~0#1 % 4294967296 % (main_~x~0#1 % 4294967296) then (if main_~x~0#1 % 4294967296 < 0 then main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296) - 1 else 1 + main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296)) else main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296)) % 4294967296;main_~x~0#1 := main_~x~0#1 * main_~x~0#1; 5#L24-2true [2022-07-14 15:40:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-07-14 15:40:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:07,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805811154] [2022-07-14 15:40:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:07,590 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:07,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:07,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2022-07-14 15:40:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:07,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127271506] [2022-07-14 15:40:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:07,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:40:07,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139735589] [2022-07-14 15:40:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:07,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:40:07,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:07,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:40:07,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 15:40:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:07,692 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:07,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2022-07-14 15:40:07,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:07,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343302436] [2022-07-14 15:40:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:07,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:40:07,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202831440] [2022-07-14 15:40:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:07,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:40:07,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:07,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:40:07,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 15:40:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:07,823 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:07,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:08,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:40:08 BoogieIcfgContainer [2022-07-14 15:40:08,032 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:40:08,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:40:08,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:40:08,033 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:40:08,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:40:07" (3/4) ... [2022-07-14 15:40:08,035 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 15:40:08,055 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 15:40:08,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:40:08,056 INFO L158 Benchmark]: Toolchain (without parser) took 1073.45ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.8MB in the beginning and 52.8MB in the end (delta: 9.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-07-14 15:40:08,057 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory was 53.0MB in the beginning and 53.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:40:08,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.27ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 92.1MB in the end (delta: -30.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:40:08,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.93ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 90.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:40:08,058 INFO L158 Benchmark]: Boogie Preprocessor took 26.43ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 89.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:40:08,058 INFO L158 Benchmark]: RCFGBuilder took 206.32ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 81.0MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 15:40:08,059 INFO L158 Benchmark]: BuchiAutomizer took 580.76ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 54.2MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-14 15:40:08,059 INFO L158 Benchmark]: Witness Printer took 22.78ms. Allocated memory is still 117.4MB. Free memory was 54.2MB in the beginning and 52.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:40:08,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory was 53.0MB in the beginning and 53.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.27ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 92.1MB in the end (delta: -30.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.93ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 90.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.43ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 89.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.32ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 81.0MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 580.76ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 54.2MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 22.78ms. Allocated memory is still 117.4MB. Free memory was 54.2MB in the beginning and 52.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {y=4294967298, x=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@262f5bc2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4b9cef20=0, NULL=1, \result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-14 15:40:08,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:08,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 15:40:08,502 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)