./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: 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 /storage/repos/svcomp/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.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 0.1.24-2e94e6a [2019-01-01 23:06:44,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 23:06:44,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 23:06:44,759 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 23:06:44,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 23:06:44,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 23:06:44,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 23:06:44,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 23:06:44,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 23:06:44,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 23:06:44,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 23:06:44,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 23:06:44,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 23:06:44,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 23:06:44,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 23:06:44,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 23:06:44,785 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 23:06:44,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 23:06:44,789 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 23:06:44,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 23:06:44,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 23:06:44,793 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 23:06:44,795 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 23:06:44,795 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 23:06:44,795 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 23:06:44,796 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 23:06:44,797 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 23:06:44,798 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 23:06:44,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 23:06:44,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 23:06:44,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 23:06:44,800 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 23:06:44,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 23:06:44,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 23:06:44,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 23:06:44,802 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 23:06:44,803 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-01-01 23:06:44,819 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 23:06:44,819 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 23:06:44,820 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 23:06:44,820 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 23:06:44,821 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 23:06:44,821 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 23:06:44,821 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 23:06:44,821 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 23:06:44,821 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 23:06:44,821 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 23:06:44,822 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 23:06:44,822 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 23:06:44,822 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 23:06:44,822 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 23:06:44,822 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 23:06:44,823 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 23:06:44,823 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 23:06:44,823 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 23:06:44,823 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 23:06:44,823 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 23:06:44,823 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 23:06:44,824 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 23:06:44,824 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 23:06:44,824 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 23:06:44,824 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 23:06:44,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 23:06:44,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 23:06:44,825 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 23:06:44,825 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 23:06:44,825 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 23:06:44,825 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 23:06:44,826 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 23:06:44,826 INFO L133 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 [2019-01-01 23:06:44,866 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 23:06:44,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 23:06:44,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 23:06:44,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 23:06:44,891 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 23:06:44,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2019-01-01 23:06:44,978 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7921cda4b/83052b52b2524274885551d2f32e8391/FLAG52bdc8b75 [2019-01-01 23:06:45,467 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 23:06:45,467 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2019-01-01 23:06:45,475 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7921cda4b/83052b52b2524274885551d2f32e8391/FLAG52bdc8b75 [2019-01-01 23:06:45,822 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7921cda4b/83052b52b2524274885551d2f32e8391 [2019-01-01 23:06:45,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 23:06:45,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 23:06:45,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 23:06:45,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 23:06:45,834 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 23:06:45,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 11:06:45" (1/1) ... [2019-01-01 23:06:45,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a372543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:45, skipping insertion in model container [2019-01-01 23:06:45,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 11:06:45" (1/1) ... [2019-01-01 23:06:45,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 23:06:45,877 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 23:06:46,109 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 23:06:46,115 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 23:06:46,139 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 23:06:46,158 INFO L195 MainTranslator]: Completed translation [2019-01-01 23:06:46,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46 WrapperNode [2019-01-01 23:06:46,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 23:06:46,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 23:06:46,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 23:06:46,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 23:06:46,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 23:06:46,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 23:06:46,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 23:06:46,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 23:06:46,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (1/1) ... [2019-01-01 23:06:46,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 23:06:46,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 23:06:46,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 23:06:46,268 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 23:06:46,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (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 [2019-01-01 23:06:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 23:06:46,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 23:06:47,032 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 23:06:47,032 INFO L280 CfgBuilder]: Removed 38 assue(true) statements. [2019-01-01 23:06:47,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 11:06:47 BoogieIcfgContainer [2019-01-01 23:06:47,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 23:06:47,034 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 23:06:47,034 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 23:06:47,038 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 23:06:47,039 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 23:06:47,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 11:06:45" (1/3) ... [2019-01-01 23:06:47,041 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e873341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 11:06:47, skipping insertion in model container [2019-01-01 23:06:47,041 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 23:06:47,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:06:46" (2/3) ... [2019-01-01 23:06:47,042 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e873341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 11:06:47, skipping insertion in model container [2019-01-01 23:06:47,042 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 23:06:47,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 11:06:47" (3/3) ... [2019-01-01 23:06:47,044 INFO L375 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop_true-unreach-call_false-termination.i [2019-01-01 23:06:47,107 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 23:06:47,108 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 23:06:47,108 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 23:06:47,108 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 23:06:47,109 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 23:06:47,110 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 23:06:47,110 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 23:06:47,110 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 23:06:47,110 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 23:06:47,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states. [2019-01-01 23:06:47,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-01-01 23:06:47,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:06:47,163 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:06:47,169 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 23:06:47,169 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 23:06:47,170 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 23:06:47,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states. [2019-01-01 23:06:47,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-01-01 23:06:47,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:06:47,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:06:47,176 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 23:06:47,176 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 23:06:47,184 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet1;havoc main_#t~nondet1; 53#L17true assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 39#L20-2true [2019-01-01 23:06:47,184 INFO L796 eck$LassoCheckResult]: Loop: 39#L20-2true assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 55#L21-2true assume !true; 39#L20-2true [2019-01-01 23:06:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:06:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-01-01 23:06:47,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:06:47,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:06:47,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:06:47,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:06:47,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1591, now seen corresponding path program 1 times [2019-01-01 23:06:47,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:06:47,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:06:47,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:06:47,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:06:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:06:47,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 23:06:47,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-01 23:06:47,353 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-01 23:06:47,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-01 23:06:47,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-01 23:06:47,376 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2019-01-01 23:06:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 23:06:47,386 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2019-01-01 23:06:47,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-01 23:06:47,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 62 transitions. [2019-01-01 23:06:47,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-01-01 23:06:47,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 38 states and 41 transitions. [2019-01-01 23:06:47,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-01-01 23:06:47,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2019-01-01 23:06:47,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 41 transitions. [2019-01-01 23:06:47,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 23:06:47,401 INFO L705 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-01-01 23:06:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 41 transitions. [2019-01-01 23:06:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-01-01 23:06:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-01-01 23:06:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-01-01 23:06:47,434 INFO L728 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-01-01 23:06:47,434 INFO L608 BuchiCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-01-01 23:06:47,434 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 23:06:47,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 41 transitions. [2019-01-01 23:06:47,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-01-01 23:06:47,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:06:47,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:06:47,436 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 23:06:47,436 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-01 23:06:47,437 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 [2019-01-01 23:06:47,437 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 [2019-01-01 23:06:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:06:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 2 times [2019-01-01 23:06:47,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:06:47,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:06:47,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:06:47,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:06:47,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1415, now seen corresponding path program 1 times [2019-01-01 23:06:47,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:06:47,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:06:47,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 23:06:47,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:06:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash 959532, now seen corresponding path program 1 times [2019-01-01 23:06:47,463 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:06:47,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:06:47,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:06:47,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:06:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:06:47,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 11:06:47 BoogieIcfgContainer [2019-01-01 23:06:47,705 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 23:06:47,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 23:06:47,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 23:06:47,706 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 23:06:47,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 11:06:47" (3/4) ... [2019-01-01 23:06:47,710 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-01 23:06:47,754 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 23:06:47,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 23:06:47,755 INFO L168 Benchmark]: Toolchain (without parser) took 1928.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -120.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2019-01-01 23:06:47,757 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 23:06:47,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.35 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 23:06:47,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.34 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 23:06:47,760 INFO L168 Benchmark]: Boogie Preprocessor took 54.08 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-01 23:06:47,761 INFO L168 Benchmark]: RCFGBuilder took 765.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-01-01 23:06:47,762 INFO L168 Benchmark]: BuchiAutomizer took 671.79 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-01-01 23:06:47,763 INFO L168 Benchmark]: Witness Printer took 48.13 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-01 23:06:47,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 330.35 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 52.34 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.08 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 765.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 671.79 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 48.13 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: 6.7 MB). Peak memory consumption was 6.7 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@19fd502=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6fa06968=0, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@720366e9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@ed4ebd3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@52f0f656=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1e592a20=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4228efea=0, len=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ad35eab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5bc8c922=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@373f7e7a=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...