./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.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 ce7adad8a0888347d25c990302f1d2465b94eb9b4e09c5836441e334d4180501 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:59:50,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:59:50,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:59:50,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:59:50,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:59:50,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:59:50,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:59:50,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:59:50,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:59:50,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:59:50,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:59:50,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:59:50,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:59:50,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:59:50,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:59:50,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:59:50,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:59:50,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:59:50,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:59:50,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:59:50,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:59:50,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:59:50,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:59:50,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:59:50,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:59:50,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:59:50,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:59:50,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:59:50,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:59:50,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:59:50,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:59:50,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:59:50,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:59:50,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:59:50,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:59:50,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:59:50,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:59:50,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:59:50,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:59:50,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:59:50,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:59:50,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 21:59:50,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:59:50,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:59:50,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:59:50,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:59:50,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:59:50,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:59:50,961 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:59:50,961 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:59:50,961 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:59:50,961 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:59:50,962 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:59:50,962 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:59:50,962 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:59:50,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:59:50,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 21:59:50,962 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:59:50,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:59:50,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 21:59:50,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:59:50,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:59:50,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:59:50,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:59:50,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 21:59:50,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:59:50,964 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:59:50,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:59:50,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:59:50,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:59:50,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:59:50,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:59:50,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:59:50,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:59:50,966 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:59:50,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7adad8a0888347d25c990302f1d2465b94eb9b4e09c5836441e334d4180501 [2021-12-21 21:59:51,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:59:51,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:59:51,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:59:51,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:59:51,193 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:59:51,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2021-12-21 21:59:51,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2a4b4b/7df247592ace458eb53d03233495305c/FLAG3597c36eb [2021-12-21 21:59:51,528 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:59:51,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2021-12-21 21:59:51,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2a4b4b/7df247592ace458eb53d03233495305c/FLAG3597c36eb [2021-12-21 21:59:51,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2a4b4b/7df247592ace458eb53d03233495305c [2021-12-21 21:59:51,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:59:51,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:59:51,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:59:51,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:59:51,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:59:51,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:59:51" (1/1) ... [2021-12-21 21:59:51,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105a2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:51, skipping insertion in model container [2021-12-21 21:59:51,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:59:51" (1/1) ... [2021-12-21 21:59:51,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:59:52,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:59:52,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:59:52,106 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:59:52,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:59:52,151 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:59:52,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52 WrapperNode [2021-12-21 21:59:52,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:59:52,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:59:52,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:59:52,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:59:52,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,181 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2021-12-21 21:59:52,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:59:52,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:59:52,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:59:52,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:59:52,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:59:52,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:59:52,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:59:52,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:59:52,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (1/1) ... [2021-12-21 21:59:52,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:59:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:52,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:59:52,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 21:59:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:59:52,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:59:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-12-21 21:59:52,305 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:59:52,306 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:59:52,414 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:59:52,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:59:52,418 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 21:59:52,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:59:52 BoogieIcfgContainer [2021-12-21 21:59:52,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:59:52,420 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:59:52,420 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:59:52,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:59:52,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:59:52,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:59:51" (1/3) ... [2021-12-21 21:59:52,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6505b66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:59:52, skipping insertion in model container [2021-12-21 21:59:52,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:59:52,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:52" (2/3) ... [2021-12-21 21:59:52,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6505b66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:59:52, skipping insertion in model container [2021-12-21 21:59:52,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:59:52,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:59:52" (3/3) ... [2021-12-21 21:59:52,425 INFO L388 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-t.i [2021-12-21 21:59:52,457 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:59:52,458 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:59:52,458 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:59:52,458 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:59:52,458 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:59:52,458 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:59:52,458 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:59:52,458 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:59:52,466 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) [2021-12-21 21:59:52,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:59:52,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:59:52,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:59:52,482 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 21:59:52,482 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:59:52,482 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:59:52,482 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) [2021-12-21 21:59:52,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:59:52,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:59:52,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:59:52,484 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 21:59:52,484 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:59:52,488 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 [2021-12-21 21:59:52,489 INFO L793 eck$LassoCheckResult]: Loop: 11#L40-2true assume !false; 12#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); 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 [2021-12-21 21:59:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:59:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-21 21:59:52,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:59:52,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120713558] [2021-12-21 21:59:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:52,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:59:52,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 21:59:52,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168161021] [2021-12-21 21:59:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:52,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 21:59:52,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:52,551 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) [2021-12-21 21:59:52,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 21:59:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:52,578 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:59:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:52,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:59:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:59:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash 50807, now seen corresponding path program 1 times [2021-12-21 21:59:52,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:59:52,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28967809] [2021-12-21 21:59:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:52,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:59:52,658 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 21:59:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315836712] [2021-12-21 21:59:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:52,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 21:59:52,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:52,661 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) [2021-12-21 21:59:52,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 21:59:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:52,683 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:59:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:52,690 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:59:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:59:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911792, now seen corresponding path program 1 times [2021-12-21 21:59:52,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:59:52,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441628903] [2021-12-21 21:59:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:52,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:59:52,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 21:59:52,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558975868] [2021-12-21 21:59:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:52,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 21:59:52,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:52,738 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) [2021-12-21 21:59:52,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process