./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/nec40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/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 e439a9fedaaf98dc56cb80d5d88e0a0508b93b38 ................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 19:10:54,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:10:54,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:10:54,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:10:54,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:10:54,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:10:54,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:10:54,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:10:54,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:10:54,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:10:54,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:10:54,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:10:54,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:10:54,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:10:54,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:10:54,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:10:54,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:10:54,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:10:54,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:10:54,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:10:54,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:10:54,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:10:54,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:10:54,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:10:54,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:10:54,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:10:54,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:10:54,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:10:54,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:10:54,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:10:54,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:10:54,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:10:54,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:10:54,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:10:54,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:10:54,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:10:54,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:10:54,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:10:54,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:10:54,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:10:54,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:10:54,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:10:54,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:10:54,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:10:54,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:10:54,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:10:54,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:10:54,360 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:10:54,360 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:10:54,361 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:10:54,361 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:10:54,361 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:10:54,362 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:10:54,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:10:54,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:10:54,363 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:10:54,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:10:54,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:10:54,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:10:54,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:10:54,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:10:54,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:10:54,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:10:54,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:10:54,366 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:10:54,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:10:54,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:10:54,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:10:54,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:10:54,367 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:10:54,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:10:54,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:10:54,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:10:54,368 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:10:54,370 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:10:54,370 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 -> e439a9fedaaf98dc56cb80d5d88e0a0508b93b38 [2020-10-19 19:10:54,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:10:54,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:10:54,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:10:54,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:10:54,693 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:10:54,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/nec40.c [2020-10-19 19:10:54,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06af8ce5c/d0576b6e25b5436e8e0c05e9ef17b86d/FLAG748211b2a [2020-10-19 19:10:55,159 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:10:55,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/nec40.c [2020-10-19 19:10:55,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06af8ce5c/d0576b6e25b5436e8e0c05e9ef17b86d/FLAG748211b2a [2020-10-19 19:10:55,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06af8ce5c/d0576b6e25b5436e8e0c05e9ef17b86d [2020-10-19 19:10:55,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:10:55,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:10:55,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:10:55,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:10:55,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:10:55,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:55,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fb8ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55, skipping insertion in model container [2020-10-19 19:10:55,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:55,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:10:55,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:10:55,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:10:55,930 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:10:55,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:10:55,973 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:10:55,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55 WrapperNode [2020-10-19 19:10:55,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:10:55,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:10:55,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:10:55,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:10:55,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:10:56,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:10:56,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:10:56,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:10:56,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (1/1) ... [2020-10-19 19:10:56,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:10:56,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:10:56,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:10:56,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:10:56,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (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 [2020-10-19 19:10:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 19:10:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:10:56,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 19:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:10:56,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:10:56,531 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 19:10:56,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:10:56 BoogieIcfgContainer [2020-10-19 19:10:56,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:10:56,535 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:10:56,535 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:10:56,539 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:10:56,541 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:10:56,541 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:10:55" (1/3) ... [2020-10-19 19:10:56,543 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c52c6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:10:56, skipping insertion in model container [2020-10-19 19:10:56,543 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:10:56,543 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:10:55" (2/3) ... [2020-10-19 19:10:56,544 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c52c6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:10:56, skipping insertion in model container [2020-10-19 19:10:56,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:10:56,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:10:56" (3/3) ... [2020-10-19 19:10:56,547 INFO L373 chiAutomizerObserver]: Analyzing ICFG nec40.c [2020-10-19 19:10:56,600 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:10:56,600 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:10:56,601 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:10:56,601 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:10:56,601 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:10:56,601 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:10:56,601 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:10:56,602 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:10:56,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 19:10:56,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 19:10:56,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:10:56,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:10:56,640 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:10:56,640 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:10:56,640 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:10:56,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 19:10:56,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 19:10:56,642 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:10:56,642 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:10:56,642 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:10:56,643 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:10:56,649 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);call ~#y~0.base, ~#y~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~mem9, main_#t~post10, main_#t~mem8, main_#t~mem11;~k~0 := main_#t~nondet7;havoc main_#t~nondet7;~i~0 := 0; 7#L20-3true [2020-10-19 19:10:56,649 INFO L796 eck$LassoCheckResult]: Loop: 7#L20-3true call main_#t~mem8 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); 9#L20-1true assume !!(0 != main_#t~mem8);havoc main_#t~mem8;call main_#t~mem9 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem9, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem9;main_#t~post10 := ~i~0;~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 7#L20-3true [2020-10-19 19:10:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:10:56,654 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-19 19:10:56,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:10:56,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444847674] [2020-10-19 19:10:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:10:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:10:56,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:10:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:10:56,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:10:56,820 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:10:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:10:56,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2020-10-19 19:10:56,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:10:56,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613357066] [2020-10-19 19:10:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:10:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:10:56,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:10:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:10:56,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:10:56,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:10:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:10:56,845 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-10-19 19:10:56,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:10:56,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208082502] [2020-10-19 19:10:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:10:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:10:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:10:56,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208082502] [2020-10-19 19:10:56,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 19:10:56,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 19:10:56,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565382534] [2020-10-19 19:10:57,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:10:57,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 19:10:57,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 19:10:57,081 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-10-19 19:10:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:10:57,119 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-10-19 19:10:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 19:10:57,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2020-10-19 19:10:57,124 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:10:57,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-10-19 19:10:57,128 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:10:57,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:10:57,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:10:57,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:10:57,129 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:10:57,130 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:10:57,130 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:10:57,130 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 19:10:57,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 19:10:57,131 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:10:57,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 19:10:57,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:10:57 BoogieIcfgContainer [2020-10-19 19:10:57,137 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:10:57,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:10:57,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:10:57,138 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:10:57,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:10:56" (3/4) ... [2020-10-19 19:10:57,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 19:10:57,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:10:57,145 INFO L168 Benchmark]: Toolchain (without parser) took 1528.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2020-10-19 19:10:57,146 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:10:57,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.33 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:10:57,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -184.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2020-10-19 19:10:57,149 INFO L168 Benchmark]: Boogie Preprocessor took 23.47 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:10:57,150 INFO L168 Benchmark]: RCFGBuilder took 443.10 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:10:57,151 INFO L168 Benchmark]: BuchiAutomizer took 601.70 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: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:10:57,151 INFO L168 Benchmark]: Witness Printer took 5.01 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. [2020-10-19 19:10:57,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 353.33 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 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 91.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -184.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.47 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 443.10 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 601.70 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: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.01 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 0.5s 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 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...