./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/divbin1-both-nt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:43:37,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:43:37,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:43:37,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:43:37,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:43:37,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:43:37,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:43:37,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:43:37,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:43:37,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:43:37,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:43:37,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:43:37,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:43:37,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:43:37,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:43:37,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:43:37,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:43:37,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:43:37,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:43:37,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:43:37,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:43:37,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:43:37,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:43:37,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:43:37,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:43:37,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:43:37,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:43:37,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:43:37,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:43:37,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:43:37,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:43:37,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:43:37,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:43:37,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:43:37,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:43:37,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:43:37,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:43:37,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:43:37,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:43:37,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:43:37,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:43:37,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-23 02:43:37,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:43:37,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:43:37,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:43:37,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:43:37,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:43:37,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:43:37,487 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:43:37,487 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-23 02:43:37,487 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-23 02:43:37,488 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-23 02:43:37,489 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-23 02:43:37,489 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-23 02:43:37,489 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-23 02:43:37,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:43:37,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:43:37,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:43:37,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:43:37,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:43:37,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:43:37,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-23 02:43:37,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-23 02:43:37,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-23 02:43:37,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:43:37,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:43:37,491 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-23 02:43:37,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:43:37,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-23 02:43:37,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:43:37,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:43:37,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:43:37,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:43:37,494 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-23 02:43:37,495 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d019f936433212ffb98f9f63454a8763bb76cd95f2f69226ba6fae3efa4715 [2022-11-23 02:43:37,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:43:37,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:43:37,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:43:37,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:43:37,864 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:43:37,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2022-11-23 02:43:40,919 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:43:41,143 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:43:41,144 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2022-11-23 02:43:41,152 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/data/27481f666/db4afc7c118a4362bbda74d4b5192c29/FLAGd1ada2394 [2022-11-23 02:43:41,518 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/data/27481f666/db4afc7c118a4362bbda74d4b5192c29 [2022-11-23 02:43:41,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:43:41,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:43:41,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:43:41,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:43:41,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:43:41,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70965495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41, skipping insertion in model container [2022-11-23 02:43:41,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:43:41,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:43:41,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:43:41,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:43:41,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:43:41,715 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:43:41,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41 WrapperNode [2022-11-23 02:43:41,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:43:41,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:43:41,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:43:41,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:43:41,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,743 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2022-11-23 02:43:41,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:43:41,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:43:41,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:43:41,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:43:41,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:43:41,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:43:41,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:43:41,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:43:41,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (1/1) ... [2022-11-23 02:43:41,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 02:43:41,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:41,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 02:43:41,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-23 02:43:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:43:41,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:43:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2022-11-23 02:43:41,889 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:43:41,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:43:42,019 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:43:42,026 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:43:42,026 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:43:42,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:42 BoogieIcfgContainer [2022-11-23 02:43:42,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:43:42,029 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-23 02:43:42,030 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-23 02:43:42,033 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-23 02:43:42,034 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 02:43:42,034 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:43:41" (1/3) ... [2022-11-23 02:43:42,035 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61eec712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:43:42, skipping insertion in model container [2022-11-23 02:43:42,035 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 02:43:42,035 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:41" (2/3) ... [2022-11-23 02:43:42,035 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61eec712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:43:42, skipping insertion in model container [2022-11-23 02:43:42,036 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 02:43:42,036 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:42" (3/3) ... [2022-11-23 02:43:42,037 INFO L332 chiAutomizerObserver]: Analyzing ICFG divbin1-both-nt.i [2022-11-23 02:43:42,094 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-23 02:43:42,095 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-23 02:43:42,095 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-23 02:43:42,095 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-23 02:43:42,095 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-23 02:43:42,096 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-23 02:43:42,096 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-23 02:43:42,096 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-23 02:43:42,100 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) [2022-11-23 02:43:42,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-23 02:43:42,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 02:43:42,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 02:43:42,122 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:43:42,122 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-23 02:43:42,122 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-23 02:43:42,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:42,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-23 02:43:42,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 02:43:42,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 02:43:42,124 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:43:42,124 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-23 02:43:42,132 INFO L748 eck$LassoCheckResult]: Stem: 4#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~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; 5#L15true assume !(main_~B~0#1 % 4294967296 >= 2147483647); 2#L16true assume !(main_~B~0#1 % 4294967296 < 1); 10#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; 11#L21true assume main_~r~0#1 % 4294967296 < main_~b~0#1 % 4294967296; 9#L23-1true [2022-11-23 02:43:42,133 INFO L750 eck$LassoCheckResult]: Loop: 9#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); 9#L23-1true [2022-11-23 02:43:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2022-11-23 02:43:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:42,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817350312] [2022-11-23 02:43:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:42,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:43:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:43:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 1 times [2022-11-23 02:43:42,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:42,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477860185] [2022-11-23 02:43:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:42,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:43:42,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754448426] [2022-11-23 02:43:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:42,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:42,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:42,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:43:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:43:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:43:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 179565814, now seen corresponding path program 1 times [2022-11-23 02:43:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:42,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302349829] [2022-11-23 02:43:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:42,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:42,391 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:43:42,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731072556] [2022-11-23 02:43:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:42,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:42,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:42,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:43:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:43:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:43:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:43:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:43:42,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:43:42 BoogieIcfgContainer [2022-11-23 02:43:42,825 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-23 02:43:42,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:43:42,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:43:42,826 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:43:42,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:42" (3/4) ... [2022-11-23 02:43:42,830 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-23 02:43:42,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:43:42,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:43:42,867 INFO L158 Benchmark]: Toolchain (without parser) took 1344.10ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 91.4MB in the beginning and 112.6MB in the end (delta: -21.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-11-23 02:43:42,872 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:43:42,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.13ms. Allocated memory is still 123.7MB. Free memory was 91.1MB in the beginning and 81.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 02:43:42,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.75ms. Allocated memory is still 123.7MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:43:42,873 INFO L158 Benchmark]: Boogie Preprocessor took 19.31ms. Allocated memory is still 123.7MB. Free memory was 80.1MB in the beginning and 79.1MB in the end (delta: 998.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:43:42,874 INFO L158 Benchmark]: RCFGBuilder took 264.17ms. Allocated memory is still 123.7MB. Free memory was 79.1MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 02:43:42,874 INFO L158 Benchmark]: BuchiAutomizer took 795.86ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 69.1MB in the beginning and 114.7MB in the end (delta: -45.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:43:42,875 INFO L158 Benchmark]: Witness Printer took 39.39ms. Allocated memory is still 148.9MB. Free memory was 114.7MB in the beginning and 112.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:43:42,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.13ms. Allocated memory is still 123.7MB. Free memory was 91.1MB in the beginning and 81.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.75ms. Allocated memory is still 123.7MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.31ms. Allocated memory is still 123.7MB. Free memory was 80.1MB in the beginning and 79.1MB in the end (delta: 998.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 264.17ms. Allocated memory is still 123.7MB. Free memory was 79.1MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 795.86ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 69.1MB in the beginning and 114.7MB in the end (delta: -45.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 39.39ms. Allocated memory is still 148.9MB. Free memory was 114.7MB in the beginning and 112.6MB 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 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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=-4294967295] [L16] COND FALSE !(B < 1) VAL [B=-4294967295] [L17] COND FALSE !(A >= (0x7fffffff * 2U + 1U)/2) [L18] q = 0 [L19] r = A [L20] b = B VAL [A=0, B=-4294967295, b=-4294967295, q=0, r=0] [L21] COND TRUE r < b VAL [A=0, b=-4294967295, B=-4294967295, 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=-4294967295] [L16] COND FALSE !(B < 1) VAL [B=-4294967295] [L17] COND FALSE !(A >= (0x7fffffff * 2U + 1U)/2) [L18] q = 0 [L19] r = A [L20] b = B VAL [A=0, B=-4294967295, b=-4294967295, q=0, r=0] [L21] COND TRUE r < b VAL [A=0, b=-4294967295, B=-4294967295, 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! [2022-11-23 02:43:42,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:43:43,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:43:43,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc859e-cb52-48ae-8cfc-893a2cbb5e62/bin/uautomizer-QkZJyEgLgS/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)