./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca1a9df26896febb4415bcdd1e46e70fe2c8b283193110413dc193d22c6c8cb9 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:02:36,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:02:36,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:02:36,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:02:36,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:02:36,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:02:36,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:02:36,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:02:36,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:02:36,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:02:36,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:02:36,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:02:36,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:02:36,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:02:36,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:02:36,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:02:36,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:02:36,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:02:36,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:02:36,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:02:36,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:02:36,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:02:36,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:02:36,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:02:36,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:02:36,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:02:36,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:02:36,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:02:36,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:02:36,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:02:36,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:02:36,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:02:36,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:02:36,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:02:36,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:02:36,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:02:36,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:02:36,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:02:36,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:02:36,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:02:36,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:02:36,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:02:36,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:02:36,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:02:36,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:02:36,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:02:36,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:02:36,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:02:36,587 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:02:36,587 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:02:36,588 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:02:36,588 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:02:36,588 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:02:36,588 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:02:36,588 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:02:36,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:02:36,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:02:36,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:02:36,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:02:36,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:02:36,590 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:02:36,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:02:36,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:02:36,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:02:36,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:02:36,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:02:36,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:02:36,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:02:36,591 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:02:36,592 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca1a9df26896febb4415bcdd1e46e70fe2c8b283193110413dc193d22c6c8cb9 [2021-12-14 23:02:36,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:02:36,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:02:36,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:02:36,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:02:36,788 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:02:36,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i [2021-12-14 23:02:36,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d4b0591/cb80cbd99d894d729b8b908484297d73/FLAG2c6dcf2a0 [2021-12-14 23:02:37,165 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:02:37,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-nt.i [2021-12-14 23:02:37,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d4b0591/cb80cbd99d894d729b8b908484297d73/FLAG2c6dcf2a0 [2021-12-14 23:02:37,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d4b0591/cb80cbd99d894d729b8b908484297d73 [2021-12-14 23:02:37,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:02:37,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:02:37,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:02:37,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:02:37,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:02:37,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44149234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37, skipping insertion in model container [2021-12-14 23:02:37,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:02:37,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:02:37,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:02:37,751 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:02:37,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:02:37,771 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:02:37,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37 WrapperNode [2021-12-14 23:02:37,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:02:37,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:02:37,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:02:37,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:02:37,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,802 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2021-12-14 23:02:37,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:02:37,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:02:37,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:02:37,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:02:37,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:02:37,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:02:37,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:02:37,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:02:37,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (1/1) ... [2021-12-14 23:02:37,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:02:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:02:37,837 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) [2021-12-14 23:02:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:02:37,848 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 [2021-12-14 23:02:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:02:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-12-14 23:02:37,899 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:02:37,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:02:38,045 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:02:38,055 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:02:38,055 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:02:38,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:02:38 BoogieIcfgContainer [2021-12-14 23:02:38,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:02:38,057 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:02:38,058 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:02:38,060 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:02:38,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:02:38,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:02:37" (1/3) ... [2021-12-14 23:02:38,062 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@db1ac7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:02:38, skipping insertion in model container [2021-12-14 23:02:38,062 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:02:38,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:37" (2/3) ... [2021-12-14 23:02:38,063 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@db1ac7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:02:38, skipping insertion in model container [2021-12-14 23:02:38,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:02:38,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:02:38" (3/3) ... [2021-12-14 23:02:38,064 INFO L388 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-nt.i [2021-12-14 23:02:38,112 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:02:38,112 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:02:38,112 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:02:38,112 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:02:38,112 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:02:38,112 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:02:38,113 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:02:38,113 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:02:38,122 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) [2021-12-14 23:02:38,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:02:38,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:02:38,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:02:38,158 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 23:02:38,158 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 23:02:38,158 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:02:38,159 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) [2021-12-14 23:02:38,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:02:38,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:02:38,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:02:38,173 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 23:02:38,173 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 23:02:38,178 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#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; 6#L15true assume !(main_~s~0#1 % 4294967296 >= 8192); 10#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))); 11#L40-2true [2021-12-14 23:02:38,182 INFO L793 eck$LassoCheckResult]: Loop: 11#L40-2true assume !false; 12#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); 7#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; 11#L40-2true [2021-12-14 23:02:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:02:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-14 23:02:38,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:02:38,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033086173] [2021-12-14 23:02:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:02:38,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:02:38,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 23:02:38,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994118450] [2021-12-14 23:02:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:02:38,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:02:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:02:38,261 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) [2021-12-14 23:02:38,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 23:02:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:02:38,300 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:02:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:02:38,330 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:02:38,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:02:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash 50807, now seen corresponding path program 1 times [2021-12-14 23:02:38,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:02:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83203876] [2021-12-14 23:02:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:02:38,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:02:38,336 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 23:02:38,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418921187] [2021-12-14 23:02:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:02:38,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:02:38,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:02:38,342 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) [2021-12-14 23:02:38,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 23:02:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:02:38,389 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:02:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:02:38,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:02:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:02:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911792, now seen corresponding path program 1 times [2021-12-14 23:02:38,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:02:38,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578224161] [2021-12-14 23:02:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:02:38,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:02:38,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 23:02:38,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594697057] [2021-12-14 23:02:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:02:38,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:02:38,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:02:38,408 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) [2021-12-14 23:02:38,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 23:02:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:02:39,002 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.