./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 f470102c 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 0.1.25-f470102 [2019-11-28 20:50:15,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:50:15,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:50:15,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:50:15,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:50:15,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:50:15,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:50:15,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:50:15,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:50:15,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:50:15,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:50:15,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:50:15,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:50:15,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:50:15,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:50:15,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:50:15,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:50:15,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:50:15,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:50:15,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:50:15,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:50:15,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:50:15,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:50:15,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:50:15,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:50:15,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:50:15,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:50:15,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:50:15,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:50:15,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:50:15,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:50:15,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:50:15,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:50:15,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:50:15,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:50:15,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:50:15,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:50:15,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:50:15,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:50:15,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:50:15,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:50:15,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:50:15,174 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:50:15,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:50:15,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:50:15,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:50:15,180 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:50:15,180 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:50:15,180 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:50:15,180 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:50:15,181 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:50:15,181 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:50:15,182 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:50:15,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:50:15,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:50:15,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:50:15,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:50:15,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:50:15,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:50:15,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:50:15,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:50:15,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:50:15,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:50:15,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:50:15,185 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:50:15,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:50:15,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:50:15,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:50:15,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:50:15,186 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:50:15,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:50:15,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:50:15,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:50:15,188 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:50:15,190 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:50:15,190 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 20:50:15,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:50:15,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:50:15,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:50:15,541 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:50:15,541 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:50:15,542 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2019-11-28 20:50:15,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc337083/663ae4e7bb664f588a588c525e85f233/FLAG36fd0200a [2019-11-28 20:50:16,118 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:50:16,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2019-11-28 20:50:16,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc337083/663ae4e7bb664f588a588c525e85f233/FLAG36fd0200a [2019-11-28 20:50:16,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc337083/663ae4e7bb664f588a588c525e85f233 [2019-11-28 20:50:16,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:50:16,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:50:16,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:16,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:50:16,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:50:16,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760d99d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16, skipping insertion in model container [2019-11-28 20:50:16,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:50:16,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:50:16,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:16,780 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:50:16,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:16,835 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:50:16,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16 WrapperNode [2019-11-28 20:50:16,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:16,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:16,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:50:16,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:50:16,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:16,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:50:16,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:50:16,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:50:16,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:16,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:17,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:17,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (1/1) ... [2019-11-28 20:50:17,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:50:17,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:50:17,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:50:17,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:50:17,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (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 20:50:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:50:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:50:17,444 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:50:17,444 INFO L287 CfgBuilder]: Removed 38 assume(true) statements. [2019-11-28 20:50:17,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:17 BoogieIcfgContainer [2019-11-28 20:50:17,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:50:17,446 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:50:17,447 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:50:17,450 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:50:17,451 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:17,452 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:50:16" (1/3) ... [2019-11-28 20:50:17,453 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37439b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:17, skipping insertion in model container [2019-11-28 20:50:17,453 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:17,453 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:16" (2/3) ... [2019-11-28 20:50:17,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37439b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:17, skipping insertion in model container [2019-11-28 20:50:17,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:17,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:17" (3/3) ... [2019-11-28 20:50:17,456 INFO L371 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2019-11-28 20:50:17,512 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:50:17,512 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:50:17,513 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:50:17,513 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:50:17,513 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:50:17,514 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:50:17,514 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:50:17,514 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:50:17,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states. [2019-11-28 20:50:17,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-11-28 20:50:17,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:17,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:17,566 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:50:17,567 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:50:17,567 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:50:17,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states. [2019-11-28 20:50:17,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-11-28 20:50:17,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:17,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:17,573 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:50:17,573 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:50:17,582 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet1;havoc main_#t~nondet1; 53#L17true assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 39#L20-2true [2019-11-28 20:50:17,583 INFO L796 eck$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 20:50:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:17,591 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-28 20:50:17,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:17,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915127756] [2019-11-28 20:50:17,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,699 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1591, now seen corresponding path program 1 times [2019-11-28 20:50:17,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:17,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56917459] [2019-11-28 20:50:17,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:17,731 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 20:50:17,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56917459] [2019-11-28 20:50:17,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:50:17,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:50:17,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615580527] [2019-11-28 20:50:17,740 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 20:50:17,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:50:17,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 20:50:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 20:50:17,760 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2019-11-28 20:50:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:50:17,771 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2019-11-28 20:50:17,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:50:17,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 62 transitions. [2019-11-28 20:50:17,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-11-28 20:50:17,783 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 38 states and 41 transitions. [2019-11-28 20:50:17,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-11-28 20:50:17,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2019-11-28 20:50:17,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 41 transitions. [2019-11-28 20:50:17,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:17,786 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-28 20:50:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 41 transitions. [2019-11-28 20:50:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-28 20:50:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 20:50:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-11-28 20:50:17,818 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-28 20:50:17,818 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-11-28 20:50:17,818 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:50:17,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 41 transitions. [2019-11-28 20:50:17,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-11-28 20:50:17,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:17,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:17,820 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:50:17,820 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:50:17,821 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 20:50:17,821 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 20:50:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 2 times [2019-11-28 20:50:17,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:17,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485775248] [2019-11-28 20:50:17,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,833 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1415, now seen corresponding path program 1 times [2019-11-28 20:50:17,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:17,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119392751] [2019-11-28 20:50:17,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash 959532, now seen corresponding path program 1 times [2019-11-28 20:50:17,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:17,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386210307] [2019-11-28 20:50:17,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:17,859 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:17,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:50:17 BoogieIcfgContainer [2019-11-28 20:50:17,986 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:50:17,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:50:17,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:50:17,987 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:50:17,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:17" (3/4) ... [2019-11-28 20:50:17,991 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 20:50:18,038 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:50:18,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:50:18,047 INFO L168 Benchmark]: Toolchain (without parser) took 1589.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -117.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:18,052 INFO L168 Benchmark]: CDTParser took 0.27 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 20:50:18,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.09 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 20:50:18,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:18,055 INFO L168 Benchmark]: Boogie Preprocessor took 51.85 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:18,056 INFO L168 Benchmark]: RCFGBuilder took 436.77 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:18,057 INFO L168 Benchmark]: BuchiAutomizer took 539.49 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:18,057 INFO L168 Benchmark]: Witness Printer took 52.18 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:18,064 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 385.09 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 118.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.85 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 436.77 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 539.49 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Witness Printer took 52.18 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: 6.5 MB). Peak memory consumption was 6.5 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 0.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 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@7f7d6246=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@37fa707e=0, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@60a9f45=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7a9b4ec1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6eb5a619=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5fd12959=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46d8f79e=0, len=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@351f153=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28da4e3e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@69c137b5=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...