./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/divbin1-both-nt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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-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 34d019f936433212ffb98f9f63454a8763bb76cd95f2f69226ba6fae3efa4715 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:05:32,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:05:32,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:05:32,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:05:32,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:05:32,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:05:32,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:05:32,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:05:32,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:05:32,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:05:32,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:05:32,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:05:32,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:05:32,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:05:32,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:05:32,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:05:32,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:05:32,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:05:32,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:05:32,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:05:32,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:05:32,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:05:32,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:05:32,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:05:32,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:05:32,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:05:32,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:05:32,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:05:32,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:05:32,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:05:32,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:05:32,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:05:32,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:05:32,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:05:32,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:05:32,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:05:32,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:05:32,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:05:32,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:05:32,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:05:32,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:05:32,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:05:32,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:05:32,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:05:32,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:05:32,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:05:32,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:05:32,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:05:32,413 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:05:32,413 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:05:32,413 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:05:32,413 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:05:32,413 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:05:32,413 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:05:32,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:05:32,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:05:32,415 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:05:32,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:05:32,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:05:32,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:05:32,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:05:32,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:05:32,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:05:32,416 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:05:32,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d019f936433212ffb98f9f63454a8763bb76cd95f2f69226ba6fae3efa4715 [2021-12-28 09:05:32,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:05:32,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:05:32,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:05:32,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:05:32,681 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:05:32,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2021-12-28 09:05:32,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cffde412/916c6ba9e84c4c018cc39546a97c0773/FLAG435ad643c [2021-12-28 09:05:33,081 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:05:33,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2021-12-28 09:05:33,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cffde412/916c6ba9e84c4c018cc39546a97c0773/FLAG435ad643c [2021-12-28 09:05:33,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cffde412/916c6ba9e84c4c018cc39546a97c0773 [2021-12-28 09:05:33,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:05:33,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:05:33,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:05:33,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:05:33,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:05:33,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181a422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33, skipping insertion in model container [2021-12-28 09:05:33,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:05:33,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:05:33,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:05:33,244 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:05:33,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:05:33,273 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:05:33,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33 WrapperNode [2021-12-28 09:05:33,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:05:33,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:05:33,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:05:33,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:05:33,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,303 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2021-12-28 09:05:33,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:05:33,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:05:33,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:05:33,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:05:33,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:05:33,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:05:33,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:05:33,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:05:33,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (1/1) ... [2021-12-28 09:05:33,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:05:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:05:33,349 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) [2021-12-28 09:05:33,372 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 [2021-12-28 09:05:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:05:33,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:05:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-12-28 09:05:33,429 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:05:33,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:05:33,536 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:05:33,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:05:33,541 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:05:33,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:05:33 BoogieIcfgContainer [2021-12-28 09:05:33,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:05:33,543 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:05:33,543 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:05:33,545 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:05:33,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:05:33,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:05:33" (1/3) ... [2021-12-28 09:05:33,546 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e34a3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:05:33, skipping insertion in model container [2021-12-28 09:05:33,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:05:33,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:05:33" (2/3) ... [2021-12-28 09:05:33,547 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e34a3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:05:33, skipping insertion in model container [2021-12-28 09:05:33,547 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:05:33,547 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:05:33" (3/3) ... [2021-12-28 09:05:33,548 INFO L388 chiAutomizerObserver]: Analyzing ICFG divbin1-both-nt.i [2021-12-28 09:05:33,574 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:05:33,574 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:05:33,575 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:05:33,575 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:05:33,575 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:05:33,575 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:05:33,575 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:05:33,575 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:05:33,584 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) [2021-12-28 09:05:33,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-28 09:05:33,594 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:05:33,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:05:33,598 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:05:33,598 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:05:33,599 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:05:33,599 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) [2021-12-28 09:05:33,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-28 09:05:33,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:05:33,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:05:33,600 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:05:33,600 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:05:33,608 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#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; 6#L15true assume !(main_~B~0#1 % 4294967296 >= 2147483647); 3#L16true assume !(main_~B~0#1 % 4294967296 < 1); 11#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; 12#L21true assume main_~r~0#1 % 4294967296 < main_~b~0#1 % 4294967296; 10#L23-1true [2021-12-28 09:05:33,608 INFO L793 eck$LassoCheckResult]: Loop: 10#L23-1true assume !!(main_~A~0#1 % 4294967296 == (main_~q~0#1 * main_~b~0#1 + main_~r~0#1) % 4294967296); 13#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); 10#L23-1true [2021-12-28 09:05:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:05:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-12-28 09:05:33,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:05:33,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225091640] [2021-12-28 09:05:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:05:33,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:05:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:05:33,694 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:05:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:05:33,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:05:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:05:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 1 times [2021-12-28 09:05:33,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:05:33,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561603448] [2021-12-28 09:05:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:05:33,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:05:33,746 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 09:05:33,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630024104] [2021-12-28 09:05:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:05:33,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:05:33,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:05:33,752 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) [2021-12-28 09:05:33,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 09:05:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:05:33,784 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:05:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:05:33,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:05:33,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:05:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash 179565814, now seen corresponding path program 1 times [2021-12-28 09:05:33,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:05:33,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689417723] [2021-12-28 09:05:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:05:33,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:05:33,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 09:05:33,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778521292] [2021-12-28 09:05:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:05:33,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:05:33,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:05:33,831 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) [2021-12-28 09:05:33,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 09:05:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:05:33,868 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:05:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:05:33,877 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:05:46,268 WARN L228 SmtUtils]: Spent 12.39s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-28 09:05:59,005 WARN L228 SmtUtils]: Spent 12.71s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-28 09:06:24,176 WARN L228 SmtUtils]: Spent 25.17s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-28 09:06:24,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:06:24 BoogieIcfgContainer [2021-12-28 09:06:24,344 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:06:24,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:06:24,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:06:24,348 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:06:24,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:05:33" (3/4) ... [2021-12-28 09:06:24,351 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:06:24,369 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:06:24,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:06:24,370 INFO L158 Benchmark]: Toolchain (without parser) took 51267.15ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.8MB in the beginning and 43.4MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:06:24,371 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:06:24,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.23ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.6MB in the beginning and 47.1MB in the end (delta: -18.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-28 09:06:24,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.43ms. Allocated memory is still 62.9MB. Free memory was 47.1MB in the beginning and 45.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:06:24,372 INFO L158 Benchmark]: Boogie Preprocessor took 21.37ms. Allocated memory is still 62.9MB. Free memory was 45.7MB in the beginning and 44.7MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:06:24,372 INFO L158 Benchmark]: RCFGBuilder took 215.46ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 36.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:06:24,373 INFO L158 Benchmark]: BuchiAutomizer took 50801.15ms. Allocated memory is still 62.9MB. Free memory was 35.8MB in the beginning and 29.1MB in the end (delta: 6.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-28 09:06:24,373 INFO L158 Benchmark]: Witness Printer took 21.76ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 43.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:06:24,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.23ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.6MB in the beginning and 47.1MB in the end (delta: -18.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.43ms. Allocated memory is still 62.9MB. Free memory was 47.1MB in the beginning and 45.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.37ms. Allocated memory is still 62.9MB. Free memory was 45.7MB in the beginning and 44.7MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.46ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 36.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 50801.15ms. Allocated memory is still 62.9MB. Free memory was 35.8MB in the beginning and 29.1MB in the end (delta: 6.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Witness Printer took 21.76ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 43.4MB in the end (delta: 1.6MB). There was no memory consumed. 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 50.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 50.7s. 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 22]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@171aa3bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23007cdd=0, A=0, q=0, r=0, \result=0, b=-4294967295, B=-4294967295} - 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) [L16] COND FALSE !(B < 1) [L17] COND FALSE !(A >= (0x7fffffff * 2U + 1U)/2) [L18] q = 0 [L19] r = A [L20] b = B [L21] COND TRUE r < b 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! [2021-12-28 09:06:24,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:06:24,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 09:06:24,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)