./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 574ddb4e 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-t.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 ce7adad8a0888347d25c990302f1d2465b94eb9b4e09c5836441e334d4180501 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:44:43,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:44:43,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:44:43,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:44:43,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:44:43,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:44:43,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:44:43,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:44:43,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:44:43,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:44:43,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:44:43,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:44:43,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:44:43,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:44:43,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:44:43,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:44:43,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:44:43,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:44:43,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:44:43,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:44:43,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:44:43,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:44:43,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:44:43,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:44:43,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:44:43,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:44:43,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:44:43,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:44:43,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:44:43,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:44:43,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:44:43,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:44:43,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:44:43,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:44:43,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:44:43,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:44:43,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:44:43,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:44:43,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:44:43,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:44:43,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:44:43,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-17 09:44:43,975 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:44:43,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:44:43,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:44:43,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:44:43,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:44:43,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:44:43,977 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:44:43,977 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-17 09:44:43,978 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-17 09:44:43,978 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-17 09:44:43,978 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-17 09:44:43,978 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-17 09:44:43,978 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-17 09:44:43,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:44:43,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:44:43,979 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-17 09:44:43,980 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:44:43,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-17 09:44:43,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:44:43,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:44:43,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:44:43,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:44:43,981 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-17 09:44:43,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7adad8a0888347d25c990302f1d2465b94eb9b4e09c5836441e334d4180501 [2023-02-17 09:44:44,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:44:44,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:44:44,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:44:44,353 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:44:44,354 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:44:44,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2023-02-17 09:44:45,531 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:44:45,727 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:44:45,727 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2023-02-17 09:44:45,733 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c24a830c/d6fbc771f16249d298b7371f06e3de84/FLAG8d832706b [2023-02-17 09:44:45,746 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c24a830c/d6fbc771f16249d298b7371f06e3de84 [2023-02-17 09:44:45,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:44:45,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:44:45,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:44:45,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:44:45,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:44:45,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36418a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45, skipping insertion in model container [2023-02-17 09:44:45,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:44:45,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:44:45,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-17 09:44:45,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-17 09:44:45,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:44:45,880 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:44:45,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-17 09:44:45,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-17 09:44:45,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:44:45,906 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:44:45,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45 WrapperNode [2023-02-17 09:44:45,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:44:45,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:44:45,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:44:45,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:44:45,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,940 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2023-02-17 09:44:45,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:44:45,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:44:45,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:44:45,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:44:45,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:44:45,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:44:45,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:44:45,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:44:45,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (1/1) ... [2023-02-17 09:44:45,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:44:46,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:44:46,019 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) [2023-02-17 09:44:46,031 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 [2023-02-17 09:44:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:44:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:44:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2023-02-17 09:44:46,102 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:44:46,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:44:46,286 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:44:46,292 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:44:46,292 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 09:44:46,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:44:46 BoogieIcfgContainer [2023-02-17 09:44:46,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:44:46,295 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-17 09:44:46,295 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-17 09:44:46,298 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-17 09:44:46,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:44:46,300 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.02 09:44:45" (1/3) ... [2023-02-17 09:44:46,300 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@739a7ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 09:44:46, skipping insertion in model container [2023-02-17 09:44:46,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:44:46,301 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:44:45" (2/3) ... [2023-02-17 09:44:46,301 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@739a7ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 09:44:46, skipping insertion in model container [2023-02-17 09:44:46,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:44:46,301 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:44:46" (3/3) ... [2023-02-17 09:44:46,303 INFO L332 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-t.i [2023-02-17 09:44:46,342 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-17 09:44:46,343 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-17 09:44:46,343 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-17 09:44:46,343 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-17 09:44:46,343 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-17 09:44:46,343 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-17 09:44:46,343 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-17 09:44:46,344 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-17 09:44:46,347 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) [2023-02-17 09:44:46,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-17 09:44:46,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:44:46,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:44:46,365 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-17 09:44:46,365 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 09:44:46,366 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-17 09:44:46,366 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) [2023-02-17 09:44:46,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-17 09:44:46,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:44:46,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:44:46,368 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-17 09:44:46,368 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 09:44:46,376 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 [2023-02-17 09:44:46,382 INFO L750 eck$LassoCheckResult]: Loop: 9#L40-2true assume !false; 10#L28true assume !!((main_~s~0#1 + 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 >= main_~d~0#1 % 4294967296 && 0 != main_~r~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 [2023-02-17 09:44:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:44:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2023-02-17 09:44:46,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:44:46,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576056824] [2023-02-17 09:44:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:44:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:44:46,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 09:44:46,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930926237] [2023-02-17 09:44:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:44:46,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:44:46,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:44:46,511 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) [2023-02-17 09:44:46,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:44:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:44:46,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:44:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:44:46,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:44:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:44:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash 50807, now seen corresponding path program 1 times [2023-02-17 09:44:46,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:44:46,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189117803] [2023-02-17 09:44:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:44:46,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:44:46,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 09:44:46,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477710509] [2023-02-17 09:44:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:44:46,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:44:46,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:44:46,659 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) [2023-02-17 09:44:46,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:44:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:44:46,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:44:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:44:46,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:44:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:44:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911792, now seen corresponding path program 1 times [2023-02-17 09:44:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:44:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845656516] [2023-02-17 09:44:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:44:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:44:46,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 09:44:46,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131959199] [2023-02-17 09:44:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:44:46,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:44:46,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:44:46,704 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) [2023-02-17 09:44:46,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process