./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_2.c --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/loops/while_infinite_loop_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 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:22:09,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:22:09,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:22:09,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:22:09,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:22:09,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:22:09,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:22:09,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:22:09,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:22:09,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:22:09,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:22:09,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:22:09,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:22:09,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:22:09,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:22:09,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:22:09,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:22:09,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:22:09,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:22:09,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:22:09,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:22:09,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:22:09,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:22:09,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:22:09,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:22:09,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:22:09,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:22:09,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:22:09,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:22:09,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:22:09,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:22:09,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:22:09,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:22:09,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:22:09,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:22:09,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:22:09,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:22:09,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:22:09,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:22:09,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:22:09,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:22:09,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:22:09,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:22:09,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:22:09,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:22:09,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:22:09,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:22:09,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:22:09,226 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:22:09,226 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:22:09,227 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:22:09,227 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:22:09,227 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:22:09,227 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:22:09,228 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:22:09,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:22:09,228 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:22:09,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:22:09,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:22:09,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:22:09,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:22:09,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:22:09,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:22:09,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:22:09,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:22:09,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:22:09,230 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:22:09,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:22:09,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:22:09,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:22:09,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:22:09,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:22:09,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:22:09,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:22:09,232 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:22:09,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 [2021-12-21 22:22:09,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:22:09,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:22:09,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:22:09,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:22:09,454 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:22:09,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2021-12-21 22:22:09,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab62328c9/51765ca2e46543fa8d4c1b97e666539b/FLAG371ed9dd9 [2021-12-21 22:22:09,920 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:22:09,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2021-12-21 22:22:09,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab62328c9/51765ca2e46543fa8d4c1b97e666539b/FLAG371ed9dd9 [2021-12-21 22:22:09,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab62328c9/51765ca2e46543fa8d4c1b97e666539b [2021-12-21 22:22:09,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:22:09,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:22:09,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:22:09,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:22:09,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:22:09,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:22:09" (1/1) ... [2021-12-21 22:22:09,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:09, skipping insertion in model container [2021-12-21 22:22:09,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:22:09" (1/1) ... [2021-12-21 22:22:09,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:22:09,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:22:10,044 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/while_infinite_loop_2.c[333,346] [2021-12-21 22:22:10,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:22:10,053 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:22:10,061 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/while_infinite_loop_2.c[333,346] [2021-12-21 22:22:10,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:22:10,072 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:22:10,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10 WrapperNode [2021-12-21 22:22:10,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:22:10,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:22:10,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:22:10,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:22:10,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,100 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2021-12-21 22:22:10,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:22:10,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:22:10,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:22:10,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:22:10,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:22:10,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:22:10,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:22:10,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:22:10,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (1/1) ... [2021-12-21 22:22:10,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:10,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:10,142 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 22:22:10,154 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 22:22:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:22:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:22:10,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:22:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:22:10,213 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:22:10,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:22:10,293 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:22:10,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:22:10,298 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 22:22:10,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:10 BoogieIcfgContainer [2021-12-21 22:22:10,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:22:10,300 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:22:10,300 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:22:10,302 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:22:10,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:10,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:22:09" (1/3) ... [2021-12-21 22:22:10,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c4ede5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:22:10, skipping insertion in model container [2021-12-21 22:22:10,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:10,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:10" (2/3) ... [2021-12-21 22:22:10,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c4ede5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:22:10, skipping insertion in model container [2021-12-21 22:22:10,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:10,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:10" (3/3) ... [2021-12-21 22:22:10,304 INFO L388 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2021-12-21 22:22:10,332 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:22:10,333 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:22:10,333 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:22:10,333 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:22:10,333 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:22:10,333 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:22:10,333 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:22:10,333 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:22:10,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) [2021-12-21 22:22:10,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:22:10,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:22:10,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:22:10,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:22:10,395 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:22:10,395 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:22:10,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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) [2021-12-21 22:22:10,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:22:10,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:22:10,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:22:10,397 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:22:10,397 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:22:10,402 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(24, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1;main_~x~0#1 := 0; 14#L14-2true [2021-12-21 22:22:10,402 INFO L793 eck$LassoCheckResult]: Loop: 14#L14-2true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == main_~x~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11#L6true assume !(0 == __VERIFIER_assert_~cond#1); 5#L6-2true assume { :end_inline___VERIFIER_assert } true; 14#L14-2true [2021-12-21 22:22:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 22:22:10,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:10,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342920939] [2021-12-21 22:22:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:10,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:10,488 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:10,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 40941, now seen corresponding path program 1 times [2021-12-21 22:22:10,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220941169] [2021-12-21 22:22:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:10,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:10,534 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:10,548 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash 28699883, now seen corresponding path program 1 times [2021-12-21 22:22:10,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:10,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284749748] [2021-12-21 22:22:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:10,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:10,569 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:10,581 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:22:10 BoogieIcfgContainer [2021-12-21 22:22:10,797 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:22:10,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:22:10,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:22:10,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:22:10,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:10" (3/4) ... [2021-12-21 22:22:10,800 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 22:22:10,824 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 22:22:10,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:22:10,829 INFO L158 Benchmark]: Toolchain (without parser) took 887.75ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 37.5MB in the beginning and 49.4MB in the end (delta: -11.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-21 22:22:10,829 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:22:10,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.78ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 37.4MB in the beginning and 69.5MB in the end (delta: -32.2MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-12-21 22:22:10,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.22ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 68.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:22:10,830 INFO L158 Benchmark]: Boogie Preprocessor took 17.77ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 67.0MB in the end (delta: 952.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:22:10,830 INFO L158 Benchmark]: RCFGBuilder took 179.09ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 73.9MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:22:10,831 INFO L158 Benchmark]: BuchiAutomizer took 497.48ms. Allocated memory is still 96.5MB. Free memory was 73.4MB in the beginning and 50.8MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-21 22:22:10,831 INFO L158 Benchmark]: Witness Printer took 26.65ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 49.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:22:10,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.78ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 37.4MB in the beginning and 69.5MB in the end (delta: -32.2MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.22ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 68.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.77ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 67.0MB in the end (delta: 952.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 179.09ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 73.9MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 497.48ms. Allocated memory is still 96.5MB. Free memory was 73.4MB in the beginning and 50.8MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 26.65ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 49.4MB 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 1]: 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 {x=0, NULL=0, NULL=0, \old(cond)=1, NULL=1, \result=0, cond=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L14] COND TRUE 1 [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 22:22:10,864 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)