./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/recursive-simple/id_i20_o20-1.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 e71fbc3aec2c9c2ff52e88118da6df1a52f5854c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 05:45:30,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:45:30,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:45:30,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:45:30,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:45:30,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:45:30,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:45:30,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:45:30,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:45:30,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:45:30,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:45:30,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:45:30,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:45:30,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:45:30,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:45:30,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:45:30,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:45:30,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:45:30,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:45:30,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:45:30,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:45:30,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:45:30,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:45:30,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:45:30,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:45:30,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:45:30,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:45:30,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:45:30,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:45:30,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:45:30,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:45:30,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:45:30,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:45:30,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:45:30,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:45:30,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:45:30,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:45:30,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:45:30,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:45:30,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:45:30,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:45:30,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:45:30,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:45:30,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:45:30,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:45:30,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:45:30,327 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:45:30,328 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:45:30,328 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:45:30,328 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:45:30,328 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:45:30,329 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:45:30,329 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:45:30,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:45:30,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:45:30,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:45:30,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:45:30,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:45:30,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:45:30,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:45:30,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:45:30,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:45:30,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:45:30,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:45:30,332 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:45:30,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:45:30,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:45:30,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:45:30,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:45:30,334 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:45:30,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:45:30,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:45:30,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:45:30,335 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:45:30,336 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:45:30,337 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e71fbc3aec2c9c2ff52e88118da6df1a52f5854c [2020-10-26 05:45:30,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:45:30,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:45:30,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:45:30,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:45:30,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:45:30,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2020-10-26 05:45:30,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31072fab5/05ab9a0c2ff647d1b3946ab7d202d8e0/FLAGdee57d116 [2020-10-26 05:45:31,361 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:45:31,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2020-10-26 05:45:31,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31072fab5/05ab9a0c2ff647d1b3946ab7d202d8e0/FLAGdee57d116 [2020-10-26 05:45:31,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31072fab5/05ab9a0c2ff647d1b3946ab7d202d8e0 [2020-10-26 05:45:31,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:45:31,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:45:31,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:45:31,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:45:31,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:45:31,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:45:31" (1/1) ... [2020-10-26 05:45:31,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5625e036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:31, skipping insertion in model container [2020-10-26 05:45:31,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:45:31" (1/1) ... [2020-10-26 05:45:31,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:45:31,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:45:32,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:45:32,015 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:45:32,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:45:32,050 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:45:32,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32 WrapperNode [2020-10-26 05:45:32,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:45:32,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:45:32,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:45:32,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:45:32,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:45:32,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:45:32,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:45:32,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:45:32,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (1/1) ... [2020-10-26 05:45:32,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:45:32,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:45:32,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:45:32,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:45:32,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (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 [2020-10-26 05:45:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:45:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:45:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:45:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-26 05:45:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-26 05:45:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:45:32,381 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:45:32,381 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:45:32,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:32 BoogieIcfgContainer [2020-10-26 05:45:32,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:45:32,384 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:45:32,385 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:45:32,388 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:45:32,389 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:32,389 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:45:31" (1/3) ... [2020-10-26 05:45:32,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f4fd796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:45:32, skipping insertion in model container [2020-10-26 05:45:32,391 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:32,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:32" (2/3) ... [2020-10-26 05:45:32,391 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f4fd796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:45:32, skipping insertion in model container [2020-10-26 05:45:32,392 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:32,392 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:32" (3/3) ... [2020-10-26 05:45:32,393 INFO L373 chiAutomizerObserver]: Analyzing ICFG id_i20_o20-1.c [2020-10-26 05:45:32,444 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:45:32,445 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:45:32,445 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:45:32,445 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:45:32,446 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:45:32,446 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:45:32,446 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:45:32,446 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:45:32,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 05:45:32,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 05:45:32,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:45:32,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:45:32,493 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:45:32,493 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:45:32,493 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:45:32,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 05:45:32,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 05:45:32,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:45:32,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:45:32,497 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:45:32,497 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:45:32,504 INFO L794 eck$LassoCheckResult]: Stem: 7#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(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5#L-1true havoc main_#res;havoc main_#t~ret8, main_~input~0, main_~result~0;main_~input~0 := 20; 15#L13true call main_#t~ret8 := id(main_~input~0);< 13#idENTRYtrue [2020-10-26 05:45:32,504 INFO L796 eck$LassoCheckResult]: Loop: 13#idENTRYtrue ~x := #in~x; 10#L7true assume !(0 == ~x); 6#L8true call #t~ret7 := id(~x - 1);< 13#idENTRYtrue [2020-10-26 05:45:32,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-10-26 05:45:32,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:32,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985268499] [2020-10-26 05:45:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:32,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:32,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:32,675 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:32,677 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-10-26 05:45:32,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:32,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434054200] [2020-10-26 05:45:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:32,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:32,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:32,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-10-26 05:45:32,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:32,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077649443] [2020-10-26 05:45:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:32,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:32,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:32,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:32,889 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-10-26 05:45:32,980 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:45:32,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:45:32,980 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:45:32,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:45:32,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:45:32,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:32,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:45:32,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:45:32,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_i20_o20-1.c_Iteration1_Loop [2020-10-26 05:45:32,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:45:32,982 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:45:32,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,086 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:45:33,087 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:33,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:33,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:33,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:33,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#t~ret7=0} Honda state: {id_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:33,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:33,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:33,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:33,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#res=0} Honda state: {id_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:33,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:33,168 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:33,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:45:33,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:33,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:33,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#in~x=-7} Honda state: {id_#in~x=-7} Generalized eigenvectors: [{id_#in~x=0}, {id_#in~x=0}, {id_#in~x=-1}] Lambdas: [2, 0, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:33,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:33,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:33,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:33,300 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_~x=0} Honda state: {id_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-10-26 05:45:33,597 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-26 05:45:33,860 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:45:33,860 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:45:33,860 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:45:33,860 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:45:33,861 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:45:33,861 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:33,861 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:45:33,861 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:45:33,861 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_i20_o20-1.c_Iteration1_Lasso [2020-10-26 05:45:33,861 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:45:33,861 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:45:33,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:33,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:34,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:45:34,339 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:45:34,347 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:45:34,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:34,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:34,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:34,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:34,356 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 05:45:34,356 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:34,363 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:45:34,406 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:45:34,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:34,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:45:34,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:34,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:34,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:34,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:45:34,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:34,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:34,463 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:45:34,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:34,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:34,466 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 05:45:34,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:34,478 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-26 05:45:34,478 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-26 05:45:34,495 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:45:34,556 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-10-26 05:45:34,556 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:45:34,565 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:34,571 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-10-26 05:45:34,572 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:45:34,572 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(id_#in~x) = 1*id_#in~x Supporting invariants [1*id_#in~x >= 0] [2020-10-26 05:45:34,680 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2020-10-26 05:45:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:45:34,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:45:34,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:45:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:45:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 05:45:34,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:45:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:45:34,870 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:45:34,871 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2020-10-26 05:45:35,049 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 31 states and 36 transitions. Complement of second has 13 states. [2020-10-26 05:45:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 05:45:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:45:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-10-26 05:45:35,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-26 05:45:35,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:35,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 05:45:35,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:35,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-26 05:45:35,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:35,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-10-26 05:45:35,061 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:45:35,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-26 05:45:35,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:45:35,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:45:35,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:45:35,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:45:35,066 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:35,066 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:35,066 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:35,066 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:45:35,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:45:35,067 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:45:35,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:45:35,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:45:35 BoogieIcfgContainer [2020-10-26 05:45:35,073 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:45:35,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:45:35,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:45:35,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:45:35,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:32" (3/4) ... [2020-10-26 05:45:35,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:45:35,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:45:35,081 INFO L168 Benchmark]: Toolchain (without parser) took 3327.58 ms. Allocated memory was 46.1 MB in the beginning and 86.0 MB in the end (delta: 39.8 MB). Free memory was 23.3 MB in the beginning and 63.7 MB in the end (delta: -40.4 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:35,082 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 46.1 MB. Free memory is still 25.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:35,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.42 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.6 MB in the beginning and 37.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:35,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 36.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:35,085 INFO L168 Benchmark]: Boogie Preprocessor took 20.64 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 35.3 MB in the end (delta: 861.6 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:35,086 INFO L168 Benchmark]: RCFGBuilder took 273.19 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 40.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:35,087 INFO L168 Benchmark]: BuchiAutomizer took 2689.13 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 40.2 MB in the beginning and 63.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:35,088 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 86.0 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:35,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 46.1 MB. Free memory is still 25.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.42 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.6 MB in the beginning and 37.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 36.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.64 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 35.3 MB in the end (delta: 861.6 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 273.19 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 40.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2689.13 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 40.2 MB in the beginning and 63.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 86.0 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(x) and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital66 mio100 ax100 hnf100 lsp89 ukn73 mio100 lsp67 div100 bol100 ite100 ukn100 eq199 hnf96 smp100 dnf145 smp100 tf102 neg94 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 117ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...