./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/aviad.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/termination-crafted-lit/aviad.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:20:55,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:20:55,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:20:55,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:20:55,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:20:55,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:20:55,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:20:55,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:20:55,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:20:55,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:20:55,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:20:55,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:20:55,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:20:55,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:20:55,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:20:55,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:20:55,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:20:55,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:20:55,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:20:55,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:20:55,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:20:55,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:20:55,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:20:55,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:20:55,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:20:55,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:20:55,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:20:55,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:20:55,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:20:55,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:20:55,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:20:55,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:20:55,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:20:55,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:20:55,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:20:55,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:20:55,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:20:55,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:20:55,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:20:55,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:20:55,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:20:55,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-16 09:20:55,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:20:55,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:20:55,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:20:55,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:20:55,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:20:55,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:20:55,242 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:20:55,242 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 09:20:55,242 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 09:20:55,242 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 09:20:55,242 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 09:20:55,242 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 09:20:55,243 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 09:20:55,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:20:55,243 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:20:55,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:20:55,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:20:55,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 09:20:55,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 09:20:55,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 09:20:55,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:20:55,244 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 09:20:55,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:20:55,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 09:20:55,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:20:55,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:20:55,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:20:55,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:20:55,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:20:55,246 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 09:20:55,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 [2021-12-16 09:20:55,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:20:55,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:20:55,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:20:55,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:20:55,421 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:20:55,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-12-16 09:20:55,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8033c64/1ed42e6f15ff42b2a8fd7a5ebec3ced6/FLAGcc343c984 [2021-12-16 09:20:55,817 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:20:55,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-12-16 09:20:55,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8033c64/1ed42e6f15ff42b2a8fd7a5ebec3ced6/FLAGcc343c984 [2021-12-16 09:20:56,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8033c64/1ed42e6f15ff42b2a8fd7a5ebec3ced6 [2021-12-16 09:20:56,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:20:56,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:20:56,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:20:56,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:20:56,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:20:56,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d90a3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56, skipping insertion in model container [2021-12-16 09:20:56,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:20:56,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:20:56,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:20:56,443 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:20:56,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:20:56,464 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:20:56,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56 WrapperNode [2021-12-16 09:20:56,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:20:56,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:20:56,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:20:56,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:20:56,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,486 INFO L137 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2021-12-16 09:20:56,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:20:56,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:20:56,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:20:56,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:20:56,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:20:56,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:20:56,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:20:56,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:20:56,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (1/1) ... [2021-12-16 09:20:56,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:56,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:56,557 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) [2021-12-16 09:20:56,574 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 [2021-12-16 09:20:56,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:20:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:20:56,622 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:20:56,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:20:56,691 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:20:56,697 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:20:56,698 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:20:56,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:20:56 BoogieIcfgContainer [2021-12-16 09:20:56,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:20:56,699 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 09:20:56,700 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 09:20:56,702 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 09:20:56,702 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:20:56,702 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 09:20:56" (1/3) ... [2021-12-16 09:20:56,703 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@353a140b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:20:56, skipping insertion in model container [2021-12-16 09:20:56,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:20:56,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:20:56" (2/3) ... [2021-12-16 09:20:56,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@353a140b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:20:56, skipping insertion in model container [2021-12-16 09:20:56,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:20:56,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:20:56" (3/3) ... [2021-12-16 09:20:56,704 INFO L388 chiAutomizerObserver]: Analyzing ICFG aviad.c [2021-12-16 09:20:56,730 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 09:20:56,730 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 09:20:56,730 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 09:20:56,730 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 09:20:56,730 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 09:20:56,731 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 09:20:56,731 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 09:20:56,731 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 09:20:56,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-12-16 09:20:56,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-16 09:20:56,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:20:56,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:20:56,760 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:20:56,760 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:20:56,760 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 09:20:56,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-12-16 09:20:56,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-16 09:20:56,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:20:56,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:20:56,763 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:20:56,763 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:20:56,767 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~ret2#1, main_~x~0#1, main_~count~1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume { :begin_inline_f } true;f_#in~a#1 := main_~x~0#1;havoc f_#res#1;havoc f_#t~post0#1, f_~a#1, f_~tmp~0#1, f_~count~0#1;f_~a#1 := f_#in~a#1;havoc f_~tmp~0#1;f_~count~0#1 := 0; 11#L11-2true [2021-12-16 09:20:56,768 INFO L793 eck$LassoCheckResult]: Loop: 11#L11-2true assume !!(f_~a#1 > 1);f_~tmp~0#1 := (if f_~a#1 < 0 && 0 != f_~a#1 % 2 then f_~a#1 % 2 - 2 else f_~a#1 % 2); 6#L13true assume !(0 == f_~tmp~0#1);f_~a#1 := f_~a#1 - 1; 7#L13-2true f_#t~post0#1 := f_~count~0#1;f_~count~0#1 := 1 + f_#t~post0#1;havoc f_#t~post0#1; 11#L11-2true [2021-12-16 09:20:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:20:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-16 09:20:56,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:20:56,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711534987] [2021-12-16 09:20:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:20:56,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:20:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:20:56,835 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:20:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:20:56,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:20:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:20:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2021-12-16 09:20:56,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:20:56,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123044195] [2021-12-16 09:20:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:20:56,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:20:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:20:56,888 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:20:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:20:56,902 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:20:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:20:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-12-16 09:20:56,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:20:56,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925728114] [2021-12-16 09:20:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:20:56,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:20:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:20:56,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:20:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:20:56,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:20:57,043 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:20:57,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:20:57,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:20:57,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:20:57,059 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:20:57,059 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,059 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:20:57,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:20:57,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: aviad.c_Iteration1_Loop [2021-12-16 09:20:57,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:20:57,060 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:20:57,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:20:57,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:20:57,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:20:57,223 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:20:57,224 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:20:57,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,227 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) [2021-12-16 09:20:57,228 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 [2021-12-16 09:20:57,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:20:57,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:20:57,269 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 [2021-12-16 09:20:57,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,275 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) [2021-12-16 09:20:57,277 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 [2021-12-16 09:20:57,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:20:57,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:20:57,300 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:20:57,300 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_~count~0#1=0} Honda state: {ULTIMATE.start_f_~count~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_f_~count~0#1=-1}, {ULTIMATE.start_f_~count~0#1=7}, {ULTIMATE.start_f_~count~0#1=-5}] Lambdas: [8, 1, 1] Nus: [1, 0] [2021-12-16 09:20:57,317 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 [2021-12-16 09:20:57,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,318 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) [2021-12-16 09:20:57,333 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 [2021-12-16 09:20:57,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:20:57,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:20:57,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:20:57,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0#1=0} Honda state: {ULTIMATE.start_f_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-16 09:20:57,363 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 [2021-12-16 09:20:57,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,365 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) [2021-12-16 09:20:57,366 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 [2021-12-16 09:20:57,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:20:57,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:20:57,412 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 [2021-12-16 09:20:57,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,414 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) [2021-12-16 09:20:57,415 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 [2021-12-16 09:20:57,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:20:57,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:20:57,451 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:20:57,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-16 09:20:57,456 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:20:57,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:20:57,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:20:57,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:20:57,456 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:20:57,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:20:57,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:20:57,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: aviad.c_Iteration1_Loop [2021-12-16 09:20:57,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:20:57,457 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:20:57,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:20:57,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:20:57,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:20:57,538 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:20:57,541 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:20:57,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,557 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2021-12-16 09:20:57,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-16 09:20:57,559 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 [2021-12-16 09:20:57,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:20:57,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:20:57,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:20:57,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:20:57,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:20:57,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:20:57,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:20:57,575 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:20:57,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-16 09:20:57,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,591 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2021-12-16 09:20:57,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-16 09:20:57,607 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 [2021-12-16 09:20:57,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:20:57,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:20:57,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:20:57,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:20:57,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:20:57,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:20:57,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:20:57,632 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:20:57,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-16 09:20:57,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,651 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2021-12-16 09:20:57,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-16 09:20:57,654 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 [2021-12-16 09:20:57,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:20:57,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:20:57,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:20:57,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:20:57,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:20:57,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:20:57,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:20:57,669 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:20:57,672 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:20:57,672 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-16 09:20:57,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:20:57,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:20:57,674 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2021-12-16 09:20:57,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-16 09:20:57,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:20:57,720 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:20:57,720 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:20:57,720 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~a#1) = 1*ULTIMATE.start_f_~a#1 Supporting invariants [] [2021-12-16 09:20:57,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-16 09:20:57,737 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:20:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:20:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:20:57,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:20:57,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:20:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:20:57,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:20:57,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:20:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:20:57,872 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 [2021-12-16 09:20:57,886 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-12-16 09:20:57,911 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 25 states and 29 transitions. Complement of second has 7 states. [2021-12-16 09:20:57,912 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 [2021-12-16 09:20:57,915 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) [2021-12-16 09:20:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-12-16 09:20:57,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-16 09:20:57,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:20:57,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-16 09:20:57,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:20:57,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-16 09:20:57,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:20:57,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 29 transitions. [2021-12-16 09:20:57,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:20:57,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2021-12-16 09:20:57,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-16 09:20:57,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-16 09:20:57,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-16 09:20:57,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:20:57,922 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:20:57,922 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:20:57,922 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:20:57,922 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-16 09:20:57,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-16 09:20:57,922 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:20:57,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-16 09:20:57,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 09:20:57 BoogieIcfgContainer [2021-12-16 09:20:57,926 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 09:20:57,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:20:57,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:20:57,927 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:20:57,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:20:56" (3/4) ... [2021-12-16 09:20:57,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 09:20:57,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:20:57,929 INFO L158 Benchmark]: Toolchain (without parser) took 1658.51ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 82.7MB in the beginning and 87.9MB in the end (delta: -5.2MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2021-12-16 09:20:57,929 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 68.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:20:57,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.63ms. Allocated memory is still 111.1MB. Free memory was 82.5MB in the beginning and 87.3MB in the end (delta: -4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:20:57,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.23ms. Allocated memory is still 111.1MB. Free memory was 87.3MB in the beginning and 86.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:20:57,931 INFO L158 Benchmark]: Boogie Preprocessor took 27.62ms. Allocated memory is still 111.1MB. Free memory was 86.0MB in the beginning and 84.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:20:57,931 INFO L158 Benchmark]: RCFGBuilder took 182.96ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 76.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:20:57,931 INFO L158 Benchmark]: BuchiAutomizer took 1226.51ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 76.8MB in the beginning and 87.9MB in the end (delta: -11.1MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-12-16 09:20:57,932 INFO L158 Benchmark]: Witness Printer took 2.18ms. Allocated memory is still 140.5MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:20:57,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 68.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.63ms. Allocated memory is still 111.1MB. Free memory was 82.5MB in the beginning and 87.3MB in the end (delta: -4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.23ms. Allocated memory is still 111.1MB. Free memory was 87.3MB in the beginning and 86.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.62ms. Allocated memory is still 111.1MB. Free memory was 86.0MB in the beginning and 84.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 182.96ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 76.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1226.51ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 76.8MB in the beginning and 87.9MB in the end (delta: -11.1MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 2.18ms. Allocated memory is still 140.5MB. Free memory is still 87.9MB. There was no memory consumed. 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 a and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div294 bol100 ite100 ukn100 eq153 hnf56 smp79 dnf100 smp100 tf105 neg97 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 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! [2021-12-16 09:20:57,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-16 09:20:58,163 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