./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 38b53e6a 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_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/divbin1-both-nt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R --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-38b53e6 [2022-11-25 17:17:47,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:17:47,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:17:48,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:17:48,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:17:48,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:17:48,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:17:48,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:17:48,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:17:48,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:17:48,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:17:48,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:17:48,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:17:48,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:17:48,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:17:48,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:17:48,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:17:48,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:17:48,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:17:48,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:17:48,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:17:48,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:17:48,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:17:48,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:17:48,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:17:48,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:17:48,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:17:48,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:17:48,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:17:48,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:17:48,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:17:48,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:17:48,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:17:48,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:17:48,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:17:48,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:17:48,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:17:48,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:17:48,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:17:48,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:17:48,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:17:48,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-25 17:17:48,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:17:48,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:17:48,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:17:48,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:17:48,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:17:48,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:17:48,139 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:17:48,139 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 17:17:48,139 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 17:17:48,139 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 17:17:48,141 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 17:17:48,141 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 17:17:48,141 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 17:17:48,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:17:48,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:17:48,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:17:48,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:17:48,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:17:48,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:17:48,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 17:17:48,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 17:17:48,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 17:17:48,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:17:48,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:17:48,144 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 17:17:48,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:17:48,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 17:17:48,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:17:48,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:17:48,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:17:48,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:17:48,147 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 17:17:48,147 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_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d019f936433212ffb98f9f63454a8763bb76cd95f2f69226ba6fae3efa4715 [2022-11-25 17:17:48,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:17:48,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:17:48,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:17:48,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:17:48,525 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:17:48,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2022-11-25 17:17:51,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:17:51,791 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:17:51,792 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/sv-benchmarks/c/termination-nla/divbin1-both-nt.i [2022-11-25 17:17:51,799 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/data/75308f524/1dea41a040804fd2842f56510431ded4/FLAG5a1cc358d [2022-11-25 17:17:51,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/data/75308f524/1dea41a040804fd2842f56510431ded4 [2022-11-25 17:17:51,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:17:51,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:17:51,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:51,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:17:51,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:17:51,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:51" (1/1) ... [2022-11-25 17:17:51,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b5721f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:51, skipping insertion in model container [2022-11-25 17:17:51,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:51" (1/1) ... [2022-11-25 17:17:51,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:17:51,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:17:52,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2022-11-25 17:17:52,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2022-11-25 17:17:52,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:52,057 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:17:52,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2022-11-25 17:17:52,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_unsigned_int [2022-11-25 17:17:52,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:52,087 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:17:52,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52 WrapperNode [2022-11-25 17:17:52,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:52,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:52,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:17:52,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:17:52,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,115 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2022-11-25 17:17:52,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:52,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:17:52,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:17:52,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:17:52,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:17:52,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:17:52,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:17:52,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:17:52,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (1/1) ... [2022-11-25 17:17:52,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:17:52,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:52,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:17:52,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 17:17:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:17:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:17:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2022-11-25 17:17:52,279 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:17:52,282 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:17:52,493 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:17:52,500 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:17:52,501 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:17:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:52 BoogieIcfgContainer [2022-11-25 17:17:52,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:17:52,504 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 17:17:52,504 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 17:17:52,508 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 17:17:52,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:17:52,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 05:17:51" (1/3) ... [2022-11-25 17:17:52,510 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3493b0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:17:52, skipping insertion in model container [2022-11-25 17:17:52,511 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:17:52,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:52" (2/3) ... [2022-11-25 17:17:52,511 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3493b0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:17:52, skipping insertion in model container [2022-11-25 17:17:52,512 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:17:52,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:52" (3/3) ... [2022-11-25 17:17:52,513 INFO L332 chiAutomizerObserver]: Analyzing ICFG divbin1-both-nt.i [2022-11-25 17:17:52,576 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 17:17:52,576 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 17:17:52,576 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 17:17:52,576 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 17:17:52,577 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 17:17:52,577 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 17:17:52,577 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 17:17:52,577 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 17:17:52,581 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) [2022-11-25 17:17:52,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-25 17:17:52,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:17:52,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:17:52,607 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:17:52,608 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:17:52,608 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 17:17:52,608 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) [2022-11-25 17:17:52,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-25 17:17:52,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:17:52,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:17:52,611 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:17:52,611 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:17:52,619 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 [2022-11-25 17:17:52,619 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 [2022-11-25 17:17:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2022-11-25 17:17:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:52,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103615464] [2022-11-25 17:17:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:52,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:52,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:17:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:52,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:17:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 1 times [2022-11-25 17:17:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:52,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258008690] [2022-11-25 17:17:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:52,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:17:52,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361058344] [2022-11-25 17:17:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:52,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:52,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:52,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:52,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:17:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:52,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:17:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:52,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:17:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash 179565814, now seen corresponding path program 1 times [2022-11-25 17:17:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027808810] [2022-11-25 17:17:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:52,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:17:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495807108] [2022-11-25 17:17:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:52,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:52,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:52,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:17:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:52,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:17:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:52,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:17:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:53,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:17:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:17:53,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 05:17:53 BoogieIcfgContainer [2022-11-25 17:17:53,212 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 17:17:53,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:17:53,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:17:53,213 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:17:53,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:52" (3/4) ... [2022-11-25 17:17:53,217 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-25 17:17:53,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:17:53,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:17:53,276 INFO L158 Benchmark]: Toolchain (without parser) took 1447.60ms. Allocated memory is still 192.9MB. Free memory was 159.1MB in the beginning and 118.5MB in the end (delta: 40.6MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2022-11-25 17:17:53,276 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:17:53,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.55ms. Allocated memory is still 192.9MB. Free memory was 159.1MB in the beginning and 159.6MB in the end (delta: -528.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 17:17:53,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.88ms. Allocated memory is still 192.9MB. Free memory was 159.6MB in the beginning and 157.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:17:53,278 INFO L158 Benchmark]: Boogie Preprocessor took 24.17ms. Allocated memory is still 192.9MB. Free memory was 157.7MB in the beginning and 157.0MB in the end (delta: 698.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:17:53,278 INFO L158 Benchmark]: RCFGBuilder took 362.08ms. Allocated memory is still 192.9MB. Free memory was 157.0MB in the beginning and 147.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:17:53,278 INFO L158 Benchmark]: BuchiAutomizer took 708.18ms. Allocated memory is still 192.9MB. Free memory was 146.5MB in the beginning and 119.9MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 17:17:53,279 INFO L158 Benchmark]: Witness Printer took 61.51ms. Allocated memory is still 192.9MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:17:53,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.55ms. Allocated memory is still 192.9MB. Free memory was 159.1MB in the beginning and 159.6MB in the end (delta: -528.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.88ms. Allocated memory is still 192.9MB. Free memory was 159.6MB in the beginning and 157.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.17ms. Allocated memory is still 192.9MB. Free memory was 157.7MB in the beginning and 157.0MB in the end (delta: 698.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 362.08ms. Allocated memory is still 192.9MB. Free memory was 157.0MB in the beginning and 147.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 708.18ms. Allocated memory is still 192.9MB. Free memory was 146.5MB in the beginning and 119.9MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 61.51ms. Allocated memory is still 192.9MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.4MB). 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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! [2022-11-25 17:17:53,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:17:53,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:53,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a84291f-1528-459e-89c8-943f79787110/bin/uautomizer-ZsLfNo2U6R/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)