./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 30f4e4ab 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 751def0588f132c393a8666a5acb62e8205c40a1 ........................................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 03:17:45,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:17:45,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:17:45,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:17:45,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:17:45,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:17:45,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:17:45,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:17:45,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:17:45,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:17:45,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:17:45,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:17:45,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:17:45,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:17:45,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:17:45,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:17:45,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:17:45,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:17:45,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:17:45,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:17:45,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:17:45,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:17:45,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:17:45,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:17:45,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:17:45,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:17:45,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:17:45,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:17:45,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:17:45,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:17:45,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:17:45,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:17:45,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:17:45,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:17:45,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:17:45,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:17:45,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:17:45,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:17:45,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:17:45,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:17:45,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:17:45,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:17:45,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:17:45,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:17:45,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:17:45,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:17:45,322 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:17:45,323 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:17:45,323 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:17:45,323 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:17:45,323 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:17:45,324 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:17:45,325 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:17:45,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:17:45,325 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:17:45,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:17:45,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:17:45,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:17:45,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:17:45,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:17:45,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:17:45,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:17:45,327 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:17:45,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:17:45,328 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:17:45,328 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:17:45,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:17:45,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:17:45,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:17:45,329 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:17:45,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:17:45,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:17:45,330 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:17:45,332 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:17:45,333 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 -> 751def0588f132c393a8666a5acb62e8205c40a1 [2019-11-28 03:17:45,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:17:45,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:17:45,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:17:45,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:17:45,679 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:17:45,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2019-11-28 03:17:45,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b161b297/65cc4d394c384522831e8878f6f9ac1b/FLAGe29d58dc8 [2019-11-28 03:17:46,216 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:17:46,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2019-11-28 03:17:46,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b161b297/65cc4d394c384522831e8878f6f9ac1b/FLAGe29d58dc8 [2019-11-28 03:17:46,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b161b297/65cc4d394c384522831e8878f6f9ac1b [2019-11-28 03:17:46,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:17:46,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:17:46,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:17:46,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:17:46,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:17:46,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:46,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527b695d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46, skipping insertion in model container [2019-11-28 03:17:46,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:46,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:17:46,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:17:46,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:17:46,871 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:17:46,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:17:46,905 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:17:46,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46 WrapperNode [2019-11-28 03:17:46,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:17:46,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:17:46,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:17:46,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:17:46,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:46,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:17:47,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:17:47,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:17:47,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:17:47,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (1/1) ... [2019-11-28 03:17:47,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:17:47,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:17:47,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:17:47,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:17:47,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (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 [2019-11-28 03:17:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:17:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:17:47,464 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:17:47,465 INFO L297 CfgBuilder]: Removed 38 assume(true) statements. [2019-11-28 03:17:47,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:47 BoogieIcfgContainer [2019-11-28 03:17:47,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:17:47,467 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:17:47,467 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:17:47,471 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:17:47,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:17:47,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:17:46" (1/3) ... [2019-11-28 03:17:47,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595c73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:47, skipping insertion in model container [2019-11-28 03:17:47,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:17:47,473 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:46" (2/3) ... [2019-11-28 03:17:47,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595c73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:47, skipping insertion in model container [2019-11-28 03:17:47,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:17:47,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:47" (3/3) ... [2019-11-28 03:17:47,476 INFO L371 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2019-11-28 03:17:47,552 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:17:47,552 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:17:47,552 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:17:47,552 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:17:47,552 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:17:47,553 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:17:47,553 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:17:47,553 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:17:47,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states. [2019-11-28 03:17:47,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-11-28 03:17:47,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:47,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:47,599 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 03:17:47,599 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:17:47,599 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:17:47,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states. [2019-11-28 03:17:47,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-11-28 03:17:47,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:47,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:47,605 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 03:17:47,605 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:17:47,615 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet1;havoc main_#t~nondet1; 53#L17true assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 39#L20-2true [2019-11-28 03:17:47,615 INFO L796 eck$LassoCheckResult]: Loop: 39#L20-2true assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 55#L21-2true assume !true; 39#L20-2true [2019-11-28 03:17:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-28 03:17:47,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:47,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766616910] [2019-11-28 03:17:47,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:47,741 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:47,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1591, now seen corresponding path program 1 times [2019-11-28 03:17:47,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:47,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63425944] [2019-11-28 03:17:47,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:17:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:17:47,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63425944] [2019-11-28 03:17:47,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:17:47,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 03:17:47,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792687517] [2019-11-28 03:17:47,787 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 03:17:47,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:17:47,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 03:17:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 03:17:47,810 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2019-11-28 03:17:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:17:47,829 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2019-11-28 03:17:47,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 03:17:47,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 62 transitions. [2019-11-28 03:17:47,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-11-28 03:17:47,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 38 states and 41 transitions. [2019-11-28 03:17:47,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-11-28 03:17:47,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2019-11-28 03:17:47,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 41 transitions. [2019-11-28 03:17:47,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:17:47,866 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-28 03:17:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 41 transitions. [2019-11-28 03:17:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-28 03:17:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 03:17:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-11-28 03:17:47,915 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-28 03:17:47,915 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-28 03:17:47,915 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:17:47,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 41 transitions. [2019-11-28 03:17:47,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-11-28 03:17:47,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:17:47,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:17:47,919 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 03:17:47,919 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:17:47,920 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, 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~nondet1;havoc main_#t~nondet1; 148#L17 assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 130#L20-2 [2019-11-28 03:17:47,920 INFO L796 eck$LassoCheckResult]: Loop: 130#L20-2 assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 131#L21-2 assume !(main_~i~0 < main_~len~0 && main_~j~0 < main_~limit~0); 130#L20-2 [2019-11-28 03:17:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 2 times [2019-11-28 03:17:47,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:47,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864791891] [2019-11-28 03:17:47,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:47,959 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:47,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:47,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1415, now seen corresponding path program 1 times [2019-11-28 03:17:47,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:47,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811406358] [2019-11-28 03:17:47,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:47,982 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:17:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash 959532, now seen corresponding path program 1 times [2019-11-28 03:17:47,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:17:47,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348680682] [2019-11-28 03:17:47,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:17:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:17:48,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:17:48,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:17:48 BoogieIcfgContainer [2019-11-28 03:17:48,181 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:17:48,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:17:48,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:17:48,182 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:17:48,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:47" (3/4) ... [2019-11-28 03:17:48,186 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 03:17:48,229 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 03:17:48,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:17:48,232 INFO L168 Benchmark]: Toolchain (without parser) took 1629.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -105.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,233 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:17:48,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.50 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,236 INFO L168 Benchmark]: Boogie Preprocessor took 24.09 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,237 INFO L168 Benchmark]: RCFGBuilder took 427.76 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: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,237 INFO L168 Benchmark]: BuchiAutomizer took 714.44 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,238 INFO L168 Benchmark]: Witness Printer took 47.81 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:17:48,243 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.50 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 107.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.09 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 427.76 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: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 714.44 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Witness Printer took 47.81 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: 6.6 MB). Peak memory consumption was 6.6 MB. 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 38 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 38 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 62 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: 20]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {bufsize=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4c9e74c4=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@31cfe99b=0, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@46463f5f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2e71ba7a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@31329744=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3581de08=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8e7ed38=0, len=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@381a19f0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2719e81e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@774d5939=0, limit=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 20]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int len; [L13] int i; [L14] int j; [L15] int bufsize; [L16] bufsize = __VERIFIER_nondet_int() [L17] COND FALSE !(bufsize < 0) [L18] len = __VERIFIER_nondet_int() [L19] int limit = bufsize - 4; [L20] i = 0 Loop: [L20] COND TRUE i < len [L21] j = 0 [L21] COND FALSE !(i < len && j < limit) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...