./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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-tmp.no-commuhash-c3fed41 [2021-12-19 17:21:15,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:21:15,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:21:15,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:21:15,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:21:15,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:21:15,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:21:15,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:21:15,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:21:15,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:21:15,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:21:15,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:21:15,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:21:15,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:21:15,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:21:15,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:21:15,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:21:15,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:21:15,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:21:15,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:21:15,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:21:15,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:21:15,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:21:15,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:21:15,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:21:15,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:21:15,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:21:15,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:21:15,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:21:15,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:21:15,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:21:15,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:21:15,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:21:15,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:21:15,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:21:15,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:21:15,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:21:15,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:21:15,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:21:15,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:21:15,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:21:15,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 17:21:15,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:21:15,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:21:15,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:21:15,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:21:15,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:21:15,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:21:15,878 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:21:15,878 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:21:15,878 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:21:15,878 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:21:15,879 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:21:15,879 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:21:15,879 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:21:15,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:21:15,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:21:15,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:21:15,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:21:15,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:21:15,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:21:15,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:21:15,883 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:21:15,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7adad8a0888347d25c990302f1d2465b94eb9b4e09c5836441e334d4180501 [2021-12-19 17:21:16,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:21:16,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:21:16,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:21:16,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:21:16,076 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:21:16,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2021-12-19 17:21:16,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1d3eb81/811d72622f634740a63463e8aba8fbc7/FLAG16f19780c [2021-12-19 17:21:16,434 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:21:16,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/knuth-nosqrt-both-t.i [2021-12-19 17:21:16,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1d3eb81/811d72622f634740a63463e8aba8fbc7/FLAG16f19780c [2021-12-19 17:21:16,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1d3eb81/811d72622f634740a63463e8aba8fbc7 [2021-12-19 17:21:16,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:21:16,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:21:16,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:21:16,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:21:16,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:21:16,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:21:16" (1/1) ... [2021-12-19 17:21:16,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45adda53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:16, skipping insertion in model container [2021-12-19 17:21:16,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:21:16" (1/1) ... [2021-12-19 17:21:16,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:21:16,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:21:17,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:21:17,015 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:21:17,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:21:17,037 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:21:17,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17 WrapperNode [2021-12-19 17:21:17,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:21:17,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:21:17,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:21:17,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:21:17,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,064 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2021-12-19 17:21:17,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:21:17,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:21:17,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:21:17,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:21:17,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:21:17,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:21:17,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:21:17,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:21:17,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (1/1) ... [2021-12-19 17:21:17,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:21:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:21:17,097 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) [2021-12-19 17:21:17,103 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 [2021-12-19 17:21:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:21:17,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:21:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-12-19 17:21:17,164 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:21:17,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:21:17,257 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:21:17,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:21:17,262 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:21:17,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:21:17 BoogieIcfgContainer [2021-12-19 17:21:17,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:21:17,264 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:21:17,264 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:21:17,266 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:21:17,266 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:21:17,266 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:21:16" (1/3) ... [2021-12-19 17:21:17,267 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d1101ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:21:17, skipping insertion in model container [2021-12-19 17:21:17,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:21:17,268 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:21:17" (2/3) ... [2021-12-19 17:21:17,268 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d1101ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:21:17, skipping insertion in model container [2021-12-19 17:21:17,268 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:21:17,268 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:21:17" (3/3) ... [2021-12-19 17:21:17,269 INFO L388 chiAutomizerObserver]: Analyzing ICFG knuth-nosqrt-both-t.i [2021-12-19 17:21:17,296 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:21:17,296 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:21:17,296 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:21:17,296 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:21:17,297 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:21:17,297 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:21:17,297 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:21:17,297 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:21:17,305 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) [2021-12-19 17:21:17,315 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-19 17:21:17,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:21:17,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:21:17,320 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:21:17,320 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:21:17,320 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:21:17,320 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) [2021-12-19 17:21:17,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-19 17:21:17,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:21:17,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:21:17,322 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:21:17,322 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:21:17,326 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 [2021-12-19 17:21:17,326 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 [2021-12-19 17:21:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:21:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-19 17:21:17,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:21:17,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607970775] [2021-12-19 17:21:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:21:17,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:21:17,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 17:21:17,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843005068] [2021-12-19 17:21:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:21:17,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:21:17,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:21:17,385 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) [2021-12-19 17:21:17,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 17:21:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:21:17,412 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:21:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:21:17,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:21:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:21:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 50807, now seen corresponding path program 1 times [2021-12-19 17:21:17,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:21:17,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606469108] [2021-12-19 17:21:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:21:17,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:21:17,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 17:21:17,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864944243] [2021-12-19 17:21:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:21:17,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:21:17,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:21:17,435 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) [2021-12-19 17:21:17,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 17:21:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:21:17,456 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:21:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:21:17,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:21:17,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:21:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911792, now seen corresponding path program 1 times [2021-12-19 17:21:17,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:21:17,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557593686] [2021-12-19 17:21:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:21:17,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:21:17,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 17:21:17,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609866981] [2021-12-19 17:21:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:21:17,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:21:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:21:17,508 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) [2021-12-19 17:21:17,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15