./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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-invgen/SpamAssassin-loop.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 515641d47b866a31074baa0701cc4e191cb58e69 ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 07:06:06,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:06:06,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:06:06,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:06:06,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:06:06,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:06:06,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:06:06,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:06:06,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:06:06,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:06:06,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:06:06,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:06:06,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:06:06,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:06:06,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:06:06,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:06:06,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:06:06,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:06:06,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:06:06,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:06:06,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:06:06,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:06:06,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:06:06,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:06:06,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:06:06,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:06:06,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:06:06,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:06:06,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:06:06,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:06:06,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:06:06,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:06:06,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:06:06,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:06:06,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:06:06,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:06:06,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:06:06,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:06:06,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:06:06,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:06:06,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:06:06,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:06:06,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:06:06,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:06:06,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:06:06,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:06:06,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:06:06,252 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:06:06,252 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:06:06,252 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:06:06,253 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:06:06,253 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:06:06,254 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:06:06,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:06:06,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:06:06,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:06:06,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:06:06,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:06:06,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:06:06,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:06:06,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:06:06,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:06:06,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:06:06,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:06:06,258 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:06:06,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:06:06,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:06:06,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:06:06,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:06:06,259 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:06:06,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:06:06,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:06:06,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:06:06,260 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:06:06,261 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:06:06,262 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 515641d47b866a31074baa0701cc4e191cb58e69 [2020-10-20 07:06:06,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:06:06,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:06:06,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:06:06,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:06:06,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:06:06,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2020-10-20 07:06:06,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6704d924/69e1a06c5fdb460784a2adf96633e2c2/FLAG16f0a15cb [2020-10-20 07:06:07,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:06:07,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2020-10-20 07:06:07,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6704d924/69e1a06c5fdb460784a2adf96633e2c2/FLAG16f0a15cb [2020-10-20 07:06:07,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6704d924/69e1a06c5fdb460784a2adf96633e2c2 [2020-10-20 07:06:07,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:06:07,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:06:07,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:07,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:06:07,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:06:07,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271a4355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07, skipping insertion in model container [2020-10-20 07:06:07,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:06:07,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:06:07,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:07,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:06:07,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:07,839 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:06:07,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07 WrapperNode [2020-10-20 07:06:07,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:07,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:07,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:06:07,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:06:07,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:07,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:06:07,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:06:07,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:06:07,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... [2020-10-20 07:06:07,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:06:07,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:06:07,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:06:07,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:06:07,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:06:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:06:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:06:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:06:08,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:06:08,438 INFO L298 CfgBuilder]: Removed 70 assume(true) statements. [2020-10-20 07:06:08,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:08 BoogieIcfgContainer [2020-10-20 07:06:08,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:06:08,441 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:06:08,441 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:06:08,445 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:06:08,446 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:08,447 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:06:07" (1/3) ... [2020-10-20 07:06:08,448 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@251f5483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:08, skipping insertion in model container [2020-10-20 07:06:08,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:08,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:07" (2/3) ... [2020-10-20 07:06:08,449 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@251f5483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:08, skipping insertion in model container [2020-10-20 07:06:08,449 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:08,449 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:08" (3/3) ... [2020-10-20 07:06:08,451 INFO L373 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-10-20 07:06:08,522 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:06:08,522 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:06:08,523 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:06:08,523 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:06:08,523 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:06:08,523 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:06:08,524 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:06:08,524 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:06:08,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states. [2020-10-20 07:06:08,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 84 [2020-10-20 07:06:08,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:08,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:08,580 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:06:08,581 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:06:08,581 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:06:08,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states. [2020-10-20 07:06:08,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 84 [2020-10-20 07:06:08,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:08,587 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:08,588 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:06:08,588 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:06:08,597 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 19#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_#t~post11, main_#t~post12, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet3;havoc main_#t~nondet3; 85#L31true assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 70#L34-2true [2020-10-20 07:06:08,598 INFO L796 eck$LassoCheckResult]: Loop: 70#L34-2true assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 88#L35-2true assume !true; 70#L34-2true [2020-10-20 07:06:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-10-20 07:06:08,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:08,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136642681] [2020-10-20 07:06:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:08,756 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:08,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1735, now seen corresponding path program 1 times [2020-10-20 07:06:08,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:08,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393205346] [2020-10-20 07:06:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:08,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393205346] [2020-10-20 07:06:08,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:08,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 07:06:08,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160479950] [2020-10-20 07:06:08,797 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 07:06:08,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:08,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 07:06:08,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 07:06:08,819 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2020-10-20 07:06:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:08,834 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2020-10-20 07:06:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:08,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 79 transitions. [2020-10-20 07:06:08,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2020-10-20 07:06:08,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 39 states and 42 transitions. [2020-10-20 07:06:08,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-10-20 07:06:08,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2020-10-20 07:06:08,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 42 transitions. [2020-10-20 07:06:08,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:08,849 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-20 07:06:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 42 transitions. [2020-10-20 07:06:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-20 07:06:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 07:06:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-20 07:06:08,885 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-20 07:06:08,885 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-20 07:06:08,885 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:06:08,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 42 transitions. [2020-10-20 07:06:08,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2020-10-20 07:06:08,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:08,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:08,897 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:06:08,897 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:06:08,897 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 188#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_#t~post11, main_#t~post12, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet3;havoc main_#t~nondet3; 189#L31 assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 194#L34-2 [2020-10-20 07:06:08,897 INFO L796 eck$LassoCheckResult]: Loop: 194#L34-2 assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 195#L35-2 assume !(main_~i~0 < main_~len~0 && main_~j~0 < main_~limit~0); 194#L34-2 [2020-10-20 07:06:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:08,898 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 2 times [2020-10-20 07:06:08,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:08,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928339050] [2020-10-20 07:06:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:08,930 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1447, now seen corresponding path program 1 times [2020-10-20 07:06:08,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:08,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942062386] [2020-10-20 07:06:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:08,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:08,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash 28695946, now seen corresponding path program 1 times [2020-10-20 07:06:08,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:08,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462535240] [2020-10-20 07:06:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:08,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:09,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:09,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:09,127 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2020-10-20 07:06:09,339 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-20 07:06:09,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:06:09 BoogieIcfgContainer [2020-10-20 07:06:09,482 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:06:09,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:06:09,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:06:09,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:06:09,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:08" (3/4) ... [2020-10-20 07:06:09,488 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 07:06:09,537 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 07:06:09,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:06:09,539 INFO L168 Benchmark]: Toolchain (without parser) took 2063.17 ms. Allocated memory was 36.2 MB in the beginning and 49.8 MB in the end (delta: 13.6 MB). Free memory was 10.4 MB in the beginning and 17.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,540 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 36.2 MB. Free memory is still 15.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 07:06:09,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.30 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 9.4 MB in the beginning and 27.0 MB in the end (delta: -17.5 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.27 ms. Allocated memory is still 44.6 MB. Free memory was 27.0 MB in the beginning and 24.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,542 INFO L168 Benchmark]: Boogie Preprocessor took 31.26 ms. Allocated memory is still 44.6 MB. Free memory was 24.6 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,543 INFO L168 Benchmark]: RCFGBuilder took 498.88 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 22.8 MB in the beginning and 13.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,544 INFO L168 Benchmark]: BuchiAutomizer took 1041.23 ms. Allocated memory was 47.2 MB in the beginning and 49.8 MB in the end (delta: 2.6 MB). Free memory was 12.8 MB in the beginning and 19.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,545 INFO L168 Benchmark]: Witness Printer took 54.55 ms. Allocated memory is still 49.8 MB. Free memory was 19.9 MB in the beginning and 17.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:09,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 36.2 MB. Free memory is still 15.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 358.30 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 9.4 MB in the beginning and 27.0 MB in the end (delta: -17.5 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 68.27 ms. Allocated memory is still 44.6 MB. Free memory was 27.0 MB in the beginning and 24.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.26 ms. Allocated memory is still 44.6 MB. Free memory was 24.6 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 498.88 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 22.8 MB in the beginning and 13.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1041.23 ms. Allocated memory was 47.2 MB in the beginning and 49.8 MB in the end (delta: 2.6 MB). Free memory was 12.8 MB in the beginning and 19.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Witness Printer took 54.55 ms. Allocated memory is still 49.8 MB. Free memory was 19.9 MB in the beginning and 17.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * 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) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 39 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 79 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 34]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14923} State at position 1 is {NULL=0, bufsize=4, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7274c54e=0, NULL=14924, \result=0, NULL=14923, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@66a328c9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@55827d57=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@59c09b6e=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@219f646a=0, NULL=14925, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6569741b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ad3fb6=0, len=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4a5026c3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7300a912=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2b6bf97=0, NULL=0, limit=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 34]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L26] int len; [L27] int i; [L28] int j; [L29] int bufsize; [L30] bufsize = __VERIFIER_nondet_int() [L31] COND FALSE !(bufsize < 0) [L32] len = __VERIFIER_nondet_int() [L33] int limit = bufsize - 4; [L34] i = 0 Loop: [L34] COND TRUE i < len [L35] j = 0 [L35] COND FALSE !(i < len && j < limit) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...