./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/loops/while_infinite_loop_2.c -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 ac6fc95614e4af693eaa4f1b073012c44a5dd7d3 ......................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 02:06:37,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:06:37,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:06:37,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:06:37,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:06:37,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:06:37,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:06:37,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:06:37,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:06:37,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:06:37,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:06:37,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:06:37,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:06:37,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:06:37,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:06:37,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:06:37,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:06:37,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:06:37,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:06:37,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:06:37,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:06:37,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:06:37,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:06:37,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:06:37,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:06:37,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:06:37,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:06:37,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:06:37,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:06:37,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:06:37,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:06:37,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:06:37,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:06:37,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:06:37,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:06:37,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:06:37,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:06:37,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:06:37,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:06:37,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:06:37,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:06:37,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:06:37,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:06:37,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:06:37,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:06:37,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:06:37,148 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:06:37,148 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:06:37,150 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:06:37,150 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:06:37,151 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:06:37,151 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:06:37,151 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:06:37,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:06:37,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:06:37,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:06:37,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:06:37,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:06:37,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:06:37,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:06:37,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:06:37,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:06:37,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:06:37,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:06:37,156 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:06:37,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:06:37,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:06:37,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:06:37,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:06:37,158 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:06:37,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:06:37,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:06:37,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:06:37,159 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:06:37,161 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:06:37,162 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 -> ac6fc95614e4af693eaa4f1b073012c44a5dd7d3 [2020-07-29 02:06:37,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:06:37,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:06:37,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:06:37,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:06:37,512 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:06:37,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2020-07-29 02:06:37,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f2471ac/3e98799bb64d41819e864f39647ef7ac/FLAGf2d313ec5 [2020-07-29 02:06:38,084 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:06:38,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2020-07-29 02:06:38,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f2471ac/3e98799bb64d41819e864f39647ef7ac/FLAGf2d313ec5 [2020-07-29 02:06:38,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f2471ac/3e98799bb64d41819e864f39647ef7ac [2020-07-29 02:06:38,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:06:38,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:06:38,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:06:38,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:06:38,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:06:38,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6da108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38, skipping insertion in model container [2020-07-29 02:06:38,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:06:38,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:06:38,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:06:38,744 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:06:38,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:06:38,788 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:06:38,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38 WrapperNode [2020-07-29 02:06:38,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:06:38,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:06:38,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:06:38,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:06:38,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:06:38,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:06:38,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:06:38,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:06:38,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... [2020-07-29 02:06:38,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:06:38,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:06:38,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:06:38,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:06:38,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:06:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:06:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:06:39,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:06:39,179 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-29 02:06:39,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:06:39 BoogieIcfgContainer [2020-07-29 02:06:39,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:06:39,185 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:06:39,185 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:06:39,189 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:06:39,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:06:39,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:06:38" (1/3) ... [2020-07-29 02:06:39,193 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3742ab1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:06:39, skipping insertion in model container [2020-07-29 02:06:39,193 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:06:39,194 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:06:38" (2/3) ... [2020-07-29 02:06:39,194 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3742ab1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:06:39, skipping insertion in model container [2020-07-29 02:06:39,194 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:06:39,195 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:06:39" (3/3) ... [2020-07-29 02:06:39,197 INFO L371 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2020-07-29 02:06:39,267 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:06:39,268 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:06:39,268 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:06:39,268 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:06:39,269 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:06:39,269 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:06:39,269 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:06:39,270 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:06:39,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-29 02:06:39,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:06:39,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:06:39,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:06:39,335 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 02:06:39,336 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 02:06:39,336 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:06:39,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-29 02:06:39,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:06:39,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:06:39,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:06:39,341 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 02:06:39,341 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 02:06:39,352 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0;main_~x~0 := 0; 9#L4-2true [2020-07-29 02:06:39,353 INFO L796 eck$LassoCheckResult]: Loop: 9#L4-2true assume !false;__VERIFIER_assert_#in~cond := (if 0 == main_~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 11#L4true assume !(0 == __VERIFIER_assert_~cond); 9#L4-2true [2020-07-29 02:06:39,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:06:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-07-29 02:06:39,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:06:39,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241563412] [2020-07-29 02:06:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:06:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:06:39,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:06:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:06:39,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:06:39,489 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:06:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:06:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1288, now seen corresponding path program 1 times [2020-07-29 02:06:39,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:06:39,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630869645] [2020-07-29 02:06:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:06:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:06:39,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:06:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:06:39,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:06:39,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:06:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:06:39,519 INFO L82 PathProgramCache]: Analyzing trace with hash 31079, now seen corresponding path program 1 times [2020-07-29 02:06:39,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:06:39,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641102313] [2020-07-29 02:06:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:06:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:06:39,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:06:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:06:39,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:06:39,535 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:06:39,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:06:39 BoogieIcfgContainer [2020-07-29 02:06:39,673 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:06:39,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:06:39,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:06:39,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:06:39,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:06:39" (3/4) ... [2020-07-29 02:06:39,682 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-07-29 02:06:39,726 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 02:06:39,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:06:39,729 INFO L168 Benchmark]: Toolchain (without parser) took 1232.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -122.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2020-07-29 02:06:39,730 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:06:39,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.96 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 945.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-29 02:06:39,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 02:06:39,733 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:06:39,733 INFO L168 Benchmark]: RCFGBuilder took 262.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-07-29 02:06:39,735 INFO L168 Benchmark]: BuchiAutomizer took 488.50 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2020-07-29 02:06:39,735 INFO L168 Benchmark]: Witness Printer took 52.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:06:39,739 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 291.96 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 945.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 262.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 488.50 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 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 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 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: 1]: 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 {cond=1, \result=0, \old(cond)=1, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 3]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int x=0; Loop: [L12] COND TRUE 1 [L4] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...