./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/divbin1-both-nt.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e8d55036 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/divbin1-both-nt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 34d019f936433212ffb98f9f63454a8763bb76cd95f2f69226ba6fae3efa4715 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:17:21,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:17:21,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:17:21,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:17:21,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:17:21,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:17:21,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:17:21,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:17:21,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:17:21,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:17:21,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:17:21,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:17:21,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:17:21,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:17:21,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:17:21,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:17:21,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:17:21,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:17:21,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:17:21,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:17:21,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:17:21,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:17:21,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:17:21,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:17:21,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:17:21,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:17:21,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:17:21,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:17:21,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:17:21,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:17:21,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:17:21,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:17:21,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:17:21,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:17:21,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:17:21,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:17:21,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:17:21,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:17:21,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:17:21,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:17:21,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:17:21,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:17:21,198 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:17:21,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:17:21,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:17:21,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:17:21,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:17:21,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:17:21,202 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:17:21,202 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:17:21,203 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:17:21,203 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:17:21,203 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:17:21,203 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:17:21,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:17:21,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:17:21,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:17:21,205 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:17:21,205 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:17:21,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:17:21,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:17:21,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:17:21,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:17:21,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:17:21,206 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:17:21,207 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d019f936433212ffb98f9f63454a8763bb76cd95f2f69226ba6fae3efa4715 [2023-02-15 23:17:21,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:17:21,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:17:21,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:17:21,421 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:17:21,422 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:17:21,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2023-02-15 23:17:22,377 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:17:22,505 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:17:22,506 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2023-02-15 23:17:22,509 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49cc7c67a/1dba416c220f4b7ebdcd629a8e41ebad/FLAGbeb695fe3 [2023-02-15 23:17:22,520 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49cc7c67a/1dba416c220f4b7ebdcd629a8e41ebad [2023-02-15 23:17:22,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:17:22,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:17:22,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:17:22,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:17:22,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:17:22,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e16f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22, skipping insertion in model container [2023-02-15 23:17:22,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:17:22,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:17:22,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-15 23:17:22,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-15 23:17:22,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:17:22,632 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:17:22,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-15 23:17:22,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2023-02-15 23:17:22,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:17:22,655 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:17:22,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22 WrapperNode [2023-02-15 23:17:22,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:17:22,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:17:22,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:17:22,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:17:22,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,701 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-02-15 23:17:22,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:17:22,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:17:22,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:17:22,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:17:22,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:17:22,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:17:22,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:17:22,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:17:22,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (1/1) ... [2023-02-15 23:17:22,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:17:22,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:17:22,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:17:22,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-15 23:17:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:17:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:17:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2023-02-15 23:17:22,837 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:17:22,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:17:22,976 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:17:22,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:17:22,998 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 23:17:22,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:17:22 BoogieIcfgContainer [2023-02-15 23:17:22,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:17:23,000 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:17:23,000 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:17:23,003 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:17:23,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:17:23,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:17:22" (1/3) ... [2023-02-15 23:17:23,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e5cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:17:23, skipping insertion in model container [2023-02-15 23:17:23,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:17:23,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:17:22" (2/3) ... [2023-02-15 23:17:23,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e5cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:17:23, skipping insertion in model container [2023-02-15 23:17:23,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:17:23,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:17:22" (3/3) ... [2023-02-15 23:17:23,005 INFO L332 chiAutomizerObserver]: Analyzing ICFG divbin1-both-nt.i [2023-02-15 23:17:23,069 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:17:23,069 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:17:23,069 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:17:23,069 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:17:23,070 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:17:23,070 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:17:23,070 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:17:23,070 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:17:23,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:17:23,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:17:23,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:17:23,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:17:23,089 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-15 23:17:23,089 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:17:23,089 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:17:23,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:17:23,090 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:17:23,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:17:23,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:17:23,091 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-15 23:17:23,091 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 23:17:23,097 INFO L748 eck$LassoCheckResult]: Stem: 11#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret0#1, main_#t~ret1#1, main_~A~0#1, main_~B~0#1, main_~q~0#1, main_~r~0#1, main_~b~0#1;havoc main_~A~0#1;havoc main_~B~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~b~0#1;call main_#t~ret0#1 := __VERIFIER_nondet_unsigned_int();main_~A~0#1 := main_#t~ret0#1;havoc main_#t~ret0#1;call main_#t~ret1#1 := __VERIFIER_nondet_unsigned_int();main_~B~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1; 4#L15true assume !(main_~B~0#1 % 4294967296 >= 2147483647); 2#L16true assume !(main_~B~0#1 % 4294967296 < 1); 8#L17true assume !(main_~A~0#1 % 4294967296 >= 2147483647);main_~q~0#1 := 0;main_~r~0#1 := main_~A~0#1;main_~b~0#1 := main_~B~0#1; 10#L21true assume main_~r~0#1 % 4294967296 < main_~b~0#1 % 4294967296; 7#L23-1true [2023-02-15 23:17:23,097 INFO L750 eck$LassoCheckResult]: Loop: 7#L23-1true assume !!(main_~A~0#1 % 4294967296 == (main_~q~0#1 * main_~b~0#1 + main_~r~0#1) % 4294967296); 12#L23true assume !(2 * (if main_~b~0#1 % 4294967296 < 0 && 0 != main_~b~0#1 % 4294967296 % 2 then 1 + main_~b~0#1 % 4294967296 / 2 else main_~b~0#1 % 4294967296 / 2) % 4294967296 == main_~b~0#1 % 4294967296); 7#L23-1true [2023-02-15 23:17:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:17:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2023-02-15 23:17:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:17:23,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130305172] [2023-02-15 23:17:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:17:23,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:17:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:17:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:17:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:17:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 1 times [2023-02-15 23:17:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:17:23,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259795603] [2023-02-15 23:17:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:17:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:17:23,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:17:23,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438378777] [2023-02-15 23:17:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:17:23,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:17:23,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:17:23,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:17:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:17:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 23:17:23,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:17:23,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:17:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash 179565814, now seen corresponding path program 1 times [2023-02-15 23:17:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:17:23,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300892470] [2023-02-15 23:17:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:17:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:17:23,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:17:23,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927582192] [2023-02-15 23:17:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:17:23,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:17:23,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:17:23,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:17:23,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 23:17:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:17:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:17:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:17:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:17:23,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 11:17:23 BoogieIcfgContainer [2023-02-15 23:17:23,490 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 23:17:23,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:17:23,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:17:23,491 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:17:23,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:17:22" (3/4) ... [2023-02-15 23:17:23,492 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-15 23:17:23,513 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 23:17:23,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:17:23,514 INFO L158 Benchmark]: Toolchain (without parser) took 990.35ms. Allocated memory is still 138.4MB. Free memory was 98.4MB in the beginning and 72.5MB in the end (delta: 25.9MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-02-15 23:17:23,514 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:17:23,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 129.88ms. Allocated memory is still 138.4MB. Free memory was 97.9MB in the beginning and 88.3MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:17:23,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.32ms. Allocated memory is still 138.4MB. Free memory was 88.3MB in the beginning and 111.6MB in the end (delta: -23.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 23:17:23,515 INFO L158 Benchmark]: Boogie Preprocessor took 39.48ms. Allocated memory is still 138.4MB. Free memory was 111.6MB in the beginning and 110.7MB in the end (delta: 942.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:17:23,516 INFO L158 Benchmark]: RCFGBuilder took 256.56ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 100.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:17:23,516 INFO L158 Benchmark]: BuchiAutomizer took 489.79ms. Allocated memory is still 138.4MB. Free memory was 100.4MB in the beginning and 74.6MB in the end (delta: 25.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-02-15 23:17:23,516 INFO L158 Benchmark]: Witness Printer took 22.91ms. Allocated memory is still 138.4MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:17:23,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 129.88ms. Allocated memory is still 138.4MB. Free memory was 97.9MB in the beginning and 88.3MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.32ms. Allocated memory is still 138.4MB. Free memory was 88.3MB in the beginning and 111.6MB in the end (delta: -23.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.48ms. Allocated memory is still 138.4MB. Free memory was 111.6MB in the beginning and 110.7MB in the end (delta: 942.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 256.56ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 100.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 489.79ms. Allocated memory is still 138.4MB. Free memory was 100.4MB in the beginning and 74.6MB in the end (delta: 25.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 22.91ms. Allocated memory is still 138.4MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 22]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L11] unsigned A, B; [L12] unsigned q, r, b; [L13] A = __VERIFIER_nondet_unsigned_int() [L14] B = __VERIFIER_nondet_unsigned_int() [L15] COND FALSE !(B >= (0x7fffffff * 2U + 1U)/2) VAL [B=1] [L16] COND FALSE !(B < 1) VAL [B=1] [L17] COND FALSE !(A >= (0x7fffffff * 2U + 1U)/2) [L18] q = 0 [L19] r = A [L20] b = B VAL [A=0, B=1, b=1, q=0, r=0] [L21] COND TRUE r < b VAL [A=0, b=1, B=1, q=0, r=0] Loop: [L22] COND TRUE A == q * b + r [L23] COND FALSE !(2 * (b / 2) == b) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 22]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] unsigned A, B; [L12] unsigned q, r, b; [L13] A = __VERIFIER_nondet_unsigned_int() [L14] B = __VERIFIER_nondet_unsigned_int() [L15] COND FALSE !(B >= (0x7fffffff * 2U + 1U)/2) VAL [B=1] [L16] COND FALSE !(B < 1) VAL [B=1] [L17] COND FALSE !(A >= (0x7fffffff * 2U + 1U)/2) [L18] q = 0 [L19] r = A [L20] b = B VAL [A=0, b=1, B=1, q=0, r=0] [L21] COND TRUE r < b VAL [A=0, b=1, B=1, q=0, r=0] Loop: [L22] COND TRUE A == q * b + r [L23] COND FALSE !(2 * (b / 2) == b) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-15 23:17:23,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 23:17:23,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 23:17:23,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)