./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/trex02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/loops/trex02-1.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 f8f2b0fe07eaaf370138039a17933ca03641a0ac6eda79ccb91fdfa5c5cca256 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:22:00,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:22:00,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:22:00,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:22:00,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:22:00,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:22:00,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:22:00,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:22:00,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:22:00,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:22:00,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:22:00,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:22:00,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:22:00,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:22:00,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:22:00,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:22:00,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:22:00,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:22:00,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:22:00,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:22:00,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:22:00,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:22:00,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:22:00,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:22:00,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:22:00,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:22:00,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:22:00,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:22:00,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:22:00,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:22:00,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:22:00,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:22:00,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:22:00,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:22:00,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:22:00,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:22:00,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:22:00,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:22:00,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:22:00,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:22:00,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:22:00,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:22:00,252 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:22:00,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:22:00,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:22:00,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:22:00,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:22:00,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:22:00,255 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:22:00,255 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:22:00,255 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:22:00,255 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:22:00,256 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:22:00,256 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:22:00,256 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:22:00,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:22:00,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:22:00,257 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:22:00,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:22:00,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:22:00,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:22:00,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:22:00,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:22:00,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:22:00,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:22:00,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:22:00,259 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:22:00,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:22:00,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:22:00,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:22:00,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:22:00,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:22:00,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:22:00,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:22:00,262 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:22:00,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8f2b0fe07eaaf370138039a17933ca03641a0ac6eda79ccb91fdfa5c5cca256 [2021-12-21 22:22:00,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:22:00,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:22:00,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:22:00,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:22:00,504 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:22:00,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex02-1.c [2021-12-21 22:22:00,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9c1506e/12c5b4664ba74aa1b143aead0f8c22c2/FLAG86e36d277 [2021-12-21 22:22:00,927 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:22:00,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex02-1.c [2021-12-21 22:22:00,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9c1506e/12c5b4664ba74aa1b143aead0f8c22c2/FLAG86e36d277 [2021-12-21 22:22:01,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9c1506e/12c5b4664ba74aa1b143aead0f8c22c2 [2021-12-21 22:22:01,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:22:01,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:22:01,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:22:01,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:22:01,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:22:01,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771c4537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01, skipping insertion in model container [2021-12-21 22:22:01,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:22:01,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:22:01,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex02-1.c[320,333] [2021-12-21 22:22:01,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:22:01,518 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:22:01,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex02-1.c[320,333] [2021-12-21 22:22:01,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:22:01,544 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:22:01,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01 WrapperNode [2021-12-21 22:22:01,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:22:01,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:22:01,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:22:01,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:22:01,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,574 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 35 [2021-12-21 22:22:01,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:22:01,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:22:01,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:22:01,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:22:01,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:22:01,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:22:01,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:22:01,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:22:01,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (1/1) ... [2021-12-21 22:22:01,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:01,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:22:01,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 22:22:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:22:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:22:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:22:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:22:01,713 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:22:01,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:22:01,794 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:22:01,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:22:01,798 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 22:22:01,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:01 BoogieIcfgContainer [2021-12-21 22:22:01,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:22:01,801 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:22:01,801 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:22:01,804 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:22:01,804 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:01,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:22:01" (1/3) ... [2021-12-21 22:22:01,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@239a5796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:22:01, skipping insertion in model container [2021-12-21 22:22:01,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:01,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:01" (2/3) ... [2021-12-21 22:22:01,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@239a5796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:22:01, skipping insertion in model container [2021-12-21 22:22:01,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:01,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:01" (3/3) ... [2021-12-21 22:22:01,807 INFO L388 chiAutomizerObserver]: Analyzing ICFG trex02-1.c [2021-12-21 22:22:01,841 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:22:01,841 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:22:01,841 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:22:01,841 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:22:01,841 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:22:01,842 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:22:01,842 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:22:01,842 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:22:01,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:22:01,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:22:01,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:22:01,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:22:01,882 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:22:01,882 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:22:01,882 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:22:01,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:22:01,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:22:01,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:22:01,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:22:01,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:22:01,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:22:01,890 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_~c~0#1;~x~0 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 9#L25-2true [2021-12-21 22:22:01,890 INFO L793 eck$LassoCheckResult]: Loop: 9#L25-2true assume !!(~x~0 > 0);main_~c~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 6#L25true assume !(0 != main_~c~0#1 % 256);assume { :begin_inline_foo } true;havoc foo_#t~post4#1;foo_#t~post4#1 := ~x~0;~x~0 := foo_#t~post4#1 - 1;havoc foo_#t~post4#1; 14#L17-1true assume { :end_inline_foo } true; 9#L25-2true [2021-12-21 22:22:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 22:22:01,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598478235] [2021-12-21 22:22:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:01,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:02,043 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:02,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:02,081 INFO L85 PathProgramCache]: Analyzing trace with hash 40940, now seen corresponding path program 1 times [2021-12-21 22:22:02,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:02,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846364424] [2021-12-21 22:22:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:02,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:02,104 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:02,115 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 28699882, now seen corresponding path program 1 times [2021-12-21 22:22:02,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:02,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690468190] [2021-12-21 22:22:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:02,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:02,133 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:02,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:02,243 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:22:02,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:22:02,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:22:02,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:22:02,243 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:22:02,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:22:02,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:22:02,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: trex02-1.c_Iteration1_Loop [2021-12-21 22:22:02,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:22:02,244 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:22:02,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:22:02,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:22:02,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:22:02,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:22:02,337 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:22:02,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:02,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:22:02,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:22:02,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:22:02,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-21 22:22:02,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:22:02,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=-256, ULTIMATE.start_main_#t~nondet6#1=-256} Honda state: {ULTIMATE.start_main_~c~0#1=-256, ULTIMATE.start_main_#t~nondet6#1=-256} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:22:02,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-21 22:22:02,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:02,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:22:02,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-21 22:22:02,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:22:02,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:22:02,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-21 22:22:02,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:02,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:22:02,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-21 22:22:02,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:22:02,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:22:02,467 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:22:02,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-21 22:22:02,477 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:22:02,477 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:22:02,478 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:22:02,478 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:22:02,478 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:22:02,478 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:22:02,478 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:22:02,478 INFO L133 ssoRankerPreferences]: Filename of dumped script: trex02-1.c_Iteration1_Loop [2021-12-21 22:22:02,478 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:22:02,478 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:22:02,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:22:02,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:22:02,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:22:02,558 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:22:02,562 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:22:02,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:02,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:22:02,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-21 22:22:02,568 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:22:02,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:22:02,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:22:02,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:22:02,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:22:02,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:22:02,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:22:02,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:22:02,594 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:22:02,597 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:22:02,597 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:22:02,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:02,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:02,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:22:02,611 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:22:02,611 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:22:02,611 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:22:02,612 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~x~0) = 1*~x~0 Supporting invariants [] [2021-12-21 22:22:02,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-21 22:22:02,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-21 22:22:02,636 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:22:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:22:02,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:22:02,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:22:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:22:02,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:22:02,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:22:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:22:02,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-21 22:22:02,791 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 22:22:02,793 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:22:02,825 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 39 transitions. Complement of second has 7 states. [2021-12-21 22:22:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 22:22:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:22:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2021-12-21 22:22:02,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-21 22:22:02,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:22:02,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 22:22:02,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:22:02,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-21 22:22:02,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:22:02,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2021-12-21 22:22:02,842 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:22:02,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2021-12-21 22:22:02,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:22:02,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:22:02,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:22:02,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:22:02,845 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:22:02,845 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:22:02,845 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:22:02,845 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:22:02,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 22:22:02,845 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:22:02,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 22:22:02,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:22:02 BoogieIcfgContainer [2021-12-21 22:22:02,850 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:22:02,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:22:02,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:22:02,850 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:22:02,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:01" (3/4) ... [2021-12-21 22:22:02,854 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 22:22:02,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:22:02,855 INFO L158 Benchmark]: Toolchain (without parser) took 1494.92ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 92.9MB in the end (delta: -495.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:22:02,855 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 47.7MB in the beginning and 47.6MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:22:02,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.73ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 99.6MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:22:02,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.96ms. Allocated memory is still 121.6MB. Free memory was 99.6MB in the beginning and 98.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:22:02,857 INFO L158 Benchmark]: Boogie Preprocessor took 11.80ms. Allocated memory is still 121.6MB. Free memory was 98.1MB in the beginning and 97.2MB in the end (delta: 971.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:22:02,857 INFO L158 Benchmark]: RCFGBuilder took 212.78ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 88.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:22:02,858 INFO L158 Benchmark]: BuchiAutomizer took 1049.20ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 93.5MB in the end (delta: -5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:22:02,858 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 92.9MB in the end (delta: 633.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:22:02,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 47.7MB in the beginning and 47.6MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.73ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 99.6MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.96ms. Allocated memory is still 121.6MB. Free memory was 99.6MB in the beginning and 98.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.80ms. Allocated memory is still 121.6MB. Free memory was 98.1MB in the beginning and 97.2MB in the end (delta: 971.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 212.78ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 88.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1049.20ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 93.5MB in the end (delta: -5.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 92.9MB in the end (delta: 633.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 x and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 9 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div469 bol100 ite100 ukn100 eq151 hnf94 smp41 dnf100 smp100 tf107 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 48ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 22:22:02,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE