./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 0.1.25-906a4fb [2020-10-19 19:12:55,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:12:55,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:12:55,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:12:55,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:12:55,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:12:55,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:12:55,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:12:55,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:12:55,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:12:55,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:12:55,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:12:55,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:12:55,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:12:55,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:12:55,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:12:55,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:12:55,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:12:55,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:12:55,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:12:55,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:12:55,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:12:55,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:12:55,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:12:55,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:12:55,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:12:55,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:12:55,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:12:55,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:12:55,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:12:55,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:12:55,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:12:55,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:12:55,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:12:55,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:12:55,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:12:55,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:12:55,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:12:55,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:12:55,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:12:55,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:12:55,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:12:55,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:12:55,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:12:55,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:12:55,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:12:55,633 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:12:55,634 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:12:55,634 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:12:55,634 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:12:55,635 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:12:55,635 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:12:55,635 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:12:55,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:12:55,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:12:55,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:12:55,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:12:55,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:12:55,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:12:55,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:12:55,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:12:55,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:12:55,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:12:55,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:12:55,640 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:12:55,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:12:55,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:12:55,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:12:55,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:12:55,642 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:12:55,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:12:55,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:12:55,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:12:55,643 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:12:55,645 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:12:55,646 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 [2020-10-19 19:12:55,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:12:56,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:12:56,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:12:56,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:12:56,033 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:12:56,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2020-10-19 19:12:56,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee99e70ef/05ae31664d554d1e9422c6a48a832569/FLAG1f0e2fcb8 [2020-10-19 19:12:56,642 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:12:56,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2020-10-19 19:12:56,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee99e70ef/05ae31664d554d1e9422c6a48a832569/FLAG1f0e2fcb8 [2020-10-19 19:12:56,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee99e70ef/05ae31664d554d1e9422c6a48a832569 [2020-10-19 19:12:56,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:12:56,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:12:56,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:12:56,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:12:56,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:12:56,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:12:56" (1/1) ... [2020-10-19 19:12:56,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d361446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:56, skipping insertion in model container [2020-10-19 19:12:56,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:12:56" (1/1) ... [2020-10-19 19:12:56,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:12:56,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:12:57,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:12:57,244 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:12:57,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:12:57,416 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:12:57,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57 WrapperNode [2020-10-19 19:12:57,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:12:57,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:12:57,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:12:57,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:12:57,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:12:57,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:12:57,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:12:57,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:12:57,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (1/1) ... [2020-10-19 19:12:57,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:12:57,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:12:57,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:12:57,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:12:57,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (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 [2020-10-19 19:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:12:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:12:58,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:12:58,003 INFO L298 CfgBuilder]: Removed 70 assume(true) statements. [2020-10-19 19:12:58,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:12:58 BoogieIcfgContainer [2020-10-19 19:12:58,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:12:58,006 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:12:58,007 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:12:58,011 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:12:58,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:12:58,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:12:56" (1/3) ... [2020-10-19 19:12:58,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ac0579b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:12:58, skipping insertion in model container [2020-10-19 19:12:58,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:12:58,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:12:57" (2/3) ... [2020-10-19 19:12:58,015 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ac0579b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:12:58, skipping insertion in model container [2020-10-19 19:12:58,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:12:58,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:12:58" (3/3) ... [2020-10-19 19:12:58,017 INFO L373 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-10-19 19:12:58,097 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:12:58,097 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:12:58,097 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:12:58,098 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:12:58,098 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:12:58,098 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:12:58,098 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:12:58,099 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:12:58,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states. [2020-10-19 19:12:58,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 84 [2020-10-19 19:12:58,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:12:58,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:12:58,153 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:12:58,153 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:12:58,154 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:12:58,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states. [2020-10-19 19:12:58,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 84 [2020-10-19 19:12:58,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:12:58,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:12:58,161 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:12:58,161 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:12:58,169 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 19#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_#t~post11, main_#t~post12, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet3;havoc main_#t~nondet3; 85#L31true assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 70#L34-2true [2020-10-19 19:12:58,169 INFO L796 eck$LassoCheckResult]: Loop: 70#L34-2true assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 88#L35-2true assume !true; 70#L34-2true [2020-10-19 19:12:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-10-19 19:12:58,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:58,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047882543] [2020-10-19 19:12:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,333 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1735, now seen corresponding path program 1 times [2020-10-19 19:12:58,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:58,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718778436] [2020-10-19 19:12:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:12:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:12:58,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718778436] [2020-10-19 19:12:58,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 19:12:58,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 19:12:58,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964653692] [2020-10-19 19:12:58,375 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 19:12:58,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:12:58,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 19:12:58,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 19:12:58,395 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2020-10-19 19:12:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:12:58,408 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2020-10-19 19:12:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 19:12:58,410 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 79 transitions. [2020-10-19 19:12:58,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2020-10-19 19:12:58,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 39 states and 42 transitions. [2020-10-19 19:12:58,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-10-19 19:12:58,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2020-10-19 19:12:58,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 42 transitions. [2020-10-19 19:12:58,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:12:58,423 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-19 19:12:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 42 transitions. [2020-10-19 19:12:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-19 19:12:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 19:12:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-19 19:12:58,455 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-19 19:12:58,455 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-19 19:12:58,455 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 19:12:58,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 42 transitions. [2020-10-19 19:12:58,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2020-10-19 19:12:58,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:12:58,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:12:58,457 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:12:58,457 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:12:58,458 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 [2020-10-19 19:12:58,458 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 [2020-10-19 19:12:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:58,458 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 2 times [2020-10-19 19:12:58,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:58,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542533668] [2020-10-19 19:12:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,491 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:58,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:58,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1447, now seen corresponding path program 1 times [2020-10-19 19:12:58,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:58,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961199772] [2020-10-19 19:12:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,505 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:12:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash 28695946, now seen corresponding path program 1 times [2020-10-19 19:12:58,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:12:58,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772765531] [2020-10-19 19:12:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:12:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:12:58,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:12:58,541 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:12:58,755 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-19 19:12:58,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:12:58 BoogieIcfgContainer [2020-10-19 19:12:58,860 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:12:58,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:12:58,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:12:58,861 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:12:58,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:12:58" (3/4) ... [2020-10-19 19:12:58,866 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 19:12:58,914 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 19:12:58,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:12:58,917 INFO L168 Benchmark]: Toolchain (without parser) took 1971.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 958.6 MB in the beginning and 1.0 GB in the end (delta: -84.7 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:58,917 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:12:58,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:58,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:58,920 INFO L168 Benchmark]: Boogie Preprocessor took 34.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:12:58,921 INFO L168 Benchmark]: RCFGBuilder took 498.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:58,922 INFO L168 Benchmark]: BuchiAutomizer took 853.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. [2020-10-19 19:12:58,922 INFO L168 Benchmark]: Witness Printer took 53.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:12:58,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 468.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 498.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 853.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. * Witness Printer took 53.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 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 0.7s and 2 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 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@221484f5=0, NULL=14924, \result=0, NULL=14923, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6279af6a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@614f88ac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@35153b2c=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@382f088f=0, NULL=14925, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b174f7e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5dd2bf9d=0, len=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7624a456=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@727b34c4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@44d067aa=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...