./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 26d01a9c 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-nla/knuth-nosqrt-both-nt.i -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 ca1a9df26896febb4415bcdd1e46e70fe2c8b283193110413dc193d22c6c8cb9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 09:07:14,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 09:07:14,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 09:07:14,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 09:07:14,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 09:07:14,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 09:07:14,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 09:07:14,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 09:07:14,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 09:07:14,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 09:07:14,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 09:07:14,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 09:07:14,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 09:07:14,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 09:07:14,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 09:07:14,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 09:07:14,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 09:07:14,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 09:07:14,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 09:07:14,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 09:07:14,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 09:07:14,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 09:07:14,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 09:07:14,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 09:07:14,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 09:07:14,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 09:07:14,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 09:07:14,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 09:07:14,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 09:07:14,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 09:07:14,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 09:07:14,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 09:07:14,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 09:07:14,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 09:07:14,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 09:07:14,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 09:07:14,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 09:07:14,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 09:07:14,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 09:07:14,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 09:07:14,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 09:07:14,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-18 09:07:14,449 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 09:07:14,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 09:07:14,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 09:07:14,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 09:07:14,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 09:07:14,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 09:07:14,451 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 09:07:14,451 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-18 09:07:14,452 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-18 09:07:14,452 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-18 09:07:14,452 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-18 09:07:14,453 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-18 09:07:14,453 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-18 09:07:14,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 09:07:14,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 09:07:14,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 09:07:14,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 09:07:14,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-18 09:07:14,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-18 09:07:14,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-18 09:07:14,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 09:07:14,454 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-18 09:07:14,454 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 09:07:14,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-18 09:07:14,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 09:07:14,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 09:07:14,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 09:07:14,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 09:07:14,456 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-18 09:07:14,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca1a9df26896febb4415bcdd1e46e70fe2c8b283193110413dc193d22c6c8cb9 [2023-02-18 09:07:14,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 09:07:14,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 09:07:14,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 09:07:14,649 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 09:07:14,649 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 09:07:14,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i [2023-02-18 09:07:15,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 09:07:15,789 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 09:07:15,790 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i [2023-02-18 09:07:15,794 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0be2ea3c/4fee8abb0f1a4bee9a6d6eca285019e3/FLAG66ee013fd [2023-02-18 09:07:15,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0be2ea3c/4fee8abb0f1a4bee9a6d6eca285019e3 [2023-02-18 09:07:15,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 09:07:15,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 09:07:15,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 09:07:15,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 09:07:15,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 09:07:15,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fde50f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15, skipping insertion in model container [2023-02-18 09:07:15,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 09:07:15,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 09:07:15,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-18 09:07:15,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-18 09:07:15,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 09:07:15,934 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 09:07:15,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-18 09:07:15,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-18 09:07:15,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 09:07:15,954 INFO L208 MainTranslator]: Completed translation [2023-02-18 09:07:15,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15 WrapperNode [2023-02-18 09:07:15,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 09:07:15,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 09:07:15,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 09:07:15,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 09:07:15,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,975 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2023-02-18 09:07:15,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 09:07:15,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 09:07:15,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 09:07:15,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 09:07:15,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:15,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:16,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:16,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:16,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:16,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 09:07:16,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 09:07:16,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 09:07:16,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 09:07:16,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (1/1) ... [2023-02-18 09:07:16,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:07:16,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:07:16,050 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) [2023-02-18 09:07:16,058 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 [2023-02-18 09:07:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 09:07:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 09:07:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2023-02-18 09:07:16,114 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 09:07:16,116 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 09:07:16,704 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 09:07:16,709 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 09:07:16,709 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 09:07:16,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:07:16 BoogieIcfgContainer [2023-02-18 09:07:16,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 09:07:16,711 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-18 09:07:16,711 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-18 09:07:16,716 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-18 09:07:16,717 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 09:07:16,717 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.02 09:07:15" (1/3) ... [2023-02-18 09:07:16,718 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e40dda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 09:07:16, skipping insertion in model container [2023-02-18 09:07:16,718 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 09:07:16,718 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:07:15" (2/3) ... [2023-02-18 09:07:16,718 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e40dda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 09:07:16, skipping insertion in model container [2023-02-18 09:07:16,718 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 09:07:16,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:07:16" (3/3) ... [2023-02-18 09:07:16,732 INFO L332 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-nt.i [2023-02-18 09:07:16,815 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-18 09:07:16,815 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-18 09:07:16,815 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-18 09:07:16,815 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-18 09:07:16,815 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-18 09:07:16,816 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-18 09:07:16,816 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-18 09:07:16,816 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-18 09:07:16,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2023-02-18 09:07:16,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-18 09:07:16,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 09:07:16,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 09:07:16,833 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-18 09:07:16,833 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-18 09:07:16,838 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-18 09:07:16,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2023-02-18 09:07:16,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-18 09:07:16,839 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 09:07:16,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 09:07:16,840 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-18 09:07:16,840 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-18 09:07:16,846 INFO L748 eck$LassoCheckResult]: Stem: 11#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret1#1, main_#t~ret2#1, main_~s~0#1, main_~a~0#1, main_~r~0#1, main_~k~0#1, main_~q~0#1, main_~d~0#1, main_~n~0#1, main_~t~0#1;havoc main_~s~0#1;havoc main_~a~0#1;havoc main_~r~0#1;havoc main_~k~0#1;havoc main_~q~0#1;havoc main_~d~0#1;havoc main_~n~0#1;havoc main_~t~0#1;call main_#t~ret1#1 := __VERIFIER_nondet_unsigned_int();main_~s~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1;call main_#t~ret2#1 := __VERIFIER_nondet_unsigned_int();main_~a~0#1 := main_#t~ret2#1;havoc main_#t~ret2#1; 3#L15true assume !(main_~s~0#1 % 4294967296 >= 8192); 7#L18true assume !(main_~a~0#1 % 4294967296 <= 2);main_~n~0#1 := main_~s~0#1 * main_~s~0#1;main_~d~0#1 := main_~a~0#1;main_~r~0#1 := (if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) then (if main_~d~0#1 % 4294967296 < 0 then main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) + main_~d~0#1 % 4294967296 else main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) - main_~d~0#1 % 4294967296) else main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296));main_~t~0#1 := 0;main_~k~0#1 := (if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) then (if (main_~d~0#1 - 2) % 4294967296 < 0 then main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) + (main_~d~0#1 - 2) % 4294967296 else main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) - (main_~d~0#1 - 2) % 4294967296) else main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296));main_~q~0#1 := 4 * ((if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % ((main_~d~0#1 - 2) % 4294967296) then (if (main_~d~0#1 - 2) % 4294967296 < 0 then main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296) - 1 else 1 + main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296)) else main_~n~0#1 % 4294967296 / ((main_~d~0#1 - 2) % 4294967296)) - (if main_~n~0#1 % 4294967296 < 0 && 0 != main_~n~0#1 % 4294967296 % (main_~d~0#1 % 4294967296) then (if main_~d~0#1 % 4294967296 < 0 then main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296) - 1 else 1 + main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296)) else main_~n~0#1 % 4294967296 / (main_~d~0#1 % 4294967296))); 9#L40-2true [2023-02-18 09:07:16,848 INFO L750 eck$LassoCheckResult]: Loop: 9#L40-2true assume !false; 10#L28true assume !!(0 == (main_~d~0#1 * main_~k~0#1 - main_~d~0#1 * main_~t~0#1 - main_~a~0#1 * main_~k~0#1 + main_~a~0#1 * main_~t~0#1) % 4294967296); 4#L29true assume (2 * main_~r~0#1 + main_~q~0#1) % 4294967296 < main_~k~0#1 % 4294967296;main_~t~0#1 := main_~r~0#1;main_~r~0#1 := 2 + (2 * main_~r~0#1 - main_~k~0#1 + main_~q~0#1 + main_~d~0#1);main_~k~0#1 := main_~t~0#1;main_~q~0#1 := 4 + main_~q~0#1;main_~d~0#1 := 2 + main_~d~0#1; 9#L40-2true [2023-02-18 09:07:16,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:07:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2023-02-18 09:07:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:07:16,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563809300] [2023-02-18 09:07:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:07:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:07:16,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 09:07:16,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877204598] [2023-02-18 09:07:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:07:16,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 09:07:16,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:07:16,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 09:07:16,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 09:07:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:07:17,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:07:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:07:17,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:07:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:07:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 50807, now seen corresponding path program 1 times [2023-02-18 09:07:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:07:17,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997998233] [2023-02-18 09:07:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:07:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:07:17,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 09:07:17,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594415947] [2023-02-18 09:07:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:07:17,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 09:07:17,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:07:17,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 09:07:17,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 09:07:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:07:17,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:07:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:07:17,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:07:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:07:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911792, now seen corresponding path program 1 times [2023-02-18 09:07:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:07:17,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687367913] [2023-02-18 09:07:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:07:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:07:17,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 09:07:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801217508] [2023-02-18 09:07:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:07:17,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 09:07:17,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:07:17,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 09:07:17,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process