./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/nec40.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/nec40.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 1154acb41caa49c0da18a0d5cc92ede9101ff854 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 02:05:22,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:05:22,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:05:22,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:05:22,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:05:22,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:05:22,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:05:22,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:05:22,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:05:22,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:05:22,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:05:22,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:05:22,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:05:22,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:05:22,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:05:22,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:05:22,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:05:22,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:05:22,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:05:22,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:05:22,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:05:22,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:05:22,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:05:22,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:05:22,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:05:22,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:05:22,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:05:22,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:05:22,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:05:22,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:05:22,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:05:22,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:05:22,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:05:22,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:05:22,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:05:22,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:05:22,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:05:22,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:05:22,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:05:22,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:05:22,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:05:22,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:05:22,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:05:22,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:05:22,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:05:22,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:05:22,183 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:05:22,184 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:05:22,184 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:05:22,184 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:05:22,184 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:05:22,184 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:05:22,185 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:05:22,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:05:22,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:05:22,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:05:22,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:05:22,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:05:22,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:05:22,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:05:22,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:05:22,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:05:22,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:05:22,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:05:22,188 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:05:22,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:05:22,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:05:22,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:05:22,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:05:22,190 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:05:22,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:05:22,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:05:22,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:05:22,191 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:05:22,192 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:05:22,193 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 -> 1154acb41caa49c0da18a0d5cc92ede9101ff854 [2020-07-29 02:05:22,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:05:22,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:05:22,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:05:22,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:05:22,517 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:05:22,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/nec40.c [2020-07-29 02:05:22,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6429f77e6/3827a14da57f4b65a0b3d21444348810/FLAG325be3093 [2020-07-29 02:05:22,978 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:05:22,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/nec40.c [2020-07-29 02:05:22,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6429f77e6/3827a14da57f4b65a0b3d21444348810/FLAG325be3093 [2020-07-29 02:05:23,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6429f77e6/3827a14da57f4b65a0b3d21444348810 [2020-07-29 02:05:23,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:05:23,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:05:23,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:05:23,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:05:23,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:05:23,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531c53f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23, skipping insertion in model container [2020-07-29 02:05:23,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:05:23,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:05:23,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:05:23,627 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:05:23,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:05:23,671 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:05:23,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23 WrapperNode [2020-07-29 02:05:23,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:05:23,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:05:23,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:05:23,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:05:23,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:05:23,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:05:23,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:05:23,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:05:23,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (1/1) ... [2020-07-29 02:05:23,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:05:23,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:05:23,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:05:23,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:05:23,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (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 02:05:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-29 02:05:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:05:23,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:05:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-29 02:05:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 02:05:24,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:05:24,239 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-29 02:05:24,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:24 BoogieIcfgContainer [2020-07-29 02:05:24,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:05:24,244 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:05:24,244 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:05:24,248 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:05:24,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:24,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:05:23" (1/3) ... [2020-07-29 02:05:24,251 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d4840d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:05:24, skipping insertion in model container [2020-07-29 02:05:24,251 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:24,252 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:23" (2/3) ... [2020-07-29 02:05:24,252 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d4840d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:05:24, skipping insertion in model container [2020-07-29 02:05:24,252 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:24,253 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:24" (3/3) ... [2020-07-29 02:05:24,255 INFO L371 chiAutomizerObserver]: Analyzing ICFG nec40.c [2020-07-29 02:05:24,299 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:05:24,299 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:05:24,299 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:05:24,300 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:05:24,300 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:05:24,300 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:05:24,300 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:05:24,300 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:05:24,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-07-29 02:05:24,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-29 02:05:24,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:24,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:24,342 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:05:24,342 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 02:05:24,342 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:05:24,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-07-29 02:05:24,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-29 02:05:24,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:24,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:24,346 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:05:24,346 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 02:05:24,353 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);call ~#y~0.base, ~#y~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; 7#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~mem2, main_#t~post3, main_#t~mem1, main_#t~mem4;~k~0 := main_#t~nondet0;havoc main_#t~nondet0;~i~0 := 0; 3#L18-3true [2020-07-29 02:05:24,353 INFO L796 eck$LassoCheckResult]: Loop: 3#L18-3true call main_#t~mem1 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); 5#L18-1true assume !!(0 != main_#t~mem1);havoc main_#t~mem1;call main_#t~mem2 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem2, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem2;main_#t~post3 := ~i~0;~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 3#L18-3true [2020-07-29 02:05:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-07-29 02:05:24,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:24,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731891262] [2020-07-29 02:05:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:24,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:24,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:24,498 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:24,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:24,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2020-07-29 02:05:24,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:24,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692777702] [2020-07-29 02:05:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:24,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:24,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:24,527 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-07-29 02:05:24,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:24,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120925633] [2020-07-29 02:05:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:24,707 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);call ~#y~0.base, ~#y~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; {23#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} is VALID [2020-07-29 02:05:24,708 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} havoc main_#res;havoc main_#t~nondet0, main_#t~mem2, main_#t~post3, main_#t~mem1, main_#t~mem4;~k~0 := main_#t~nondet0;havoc main_#t~nondet0;~i~0 := 0; {23#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} is VALID [2020-07-29 02:05:24,710 INFO L280 TraceCheckUtils]: 2: Hoare triple {23#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} call main_#t~mem1 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); {24#(= 0 |ULTIMATE.start_main_#t~mem1|)} is VALID [2020-07-29 02:05:24,713 INFO L280 TraceCheckUtils]: 3: Hoare triple {24#(= 0 |ULTIMATE.start_main_#t~mem1|)} assume !!(0 != main_#t~mem1);havoc main_#t~mem1;call main_#t~mem2 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem2, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem2;main_#t~post3 := ~i~0;~i~0 := 1 + main_#t~post3;havoc main_#t~post3; {22#false} is VALID [2020-07-29 02:05:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:05:24,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120925633] [2020-07-29 02:05:24,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:05:24,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 02:05:24,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608832797] [2020-07-29 02:05:24,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:05:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 02:05:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 02:05:24,858 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-07-29 02:05:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:05:24,951 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-29 02:05:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 02:05:24,953 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 02:05:24,965 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:05:24,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2020-07-29 02:05:24,970 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:24,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-07-29 02:05:24,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 02:05:24,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 02:05:24,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 02:05:24,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:05:24,975 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:24,976 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:24,976 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:24,976 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:05:24,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 02:05:24,976 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:24,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:05:24,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:05:24 BoogieIcfgContainer [2020-07-29 02:05:24,982 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:05:24,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:05:24,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:05:24,983 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:05:24,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:24" (3/4) ... [2020-07-29 02:05:24,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 02:05:24,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:05:24,991 INFO L168 Benchmark]: Toolchain (without parser) took 1587.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -102.4 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:24,992 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:05:24,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.50 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:24,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:24,994 INFO L168 Benchmark]: Boogie Preprocessor took 28.92 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 02:05:24,995 INFO L168 Benchmark]: RCFGBuilder took 441.10 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:24,996 INFO L168 Benchmark]: BuchiAutomizer took 738.79 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: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:24,996 INFO L168 Benchmark]: Witness Printer took 5.08 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 02:05:25,000 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 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.50 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 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 99.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.92 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 441.10 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 738.79 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: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.08 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 4 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 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 10 SDslu, 9 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...