./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-bwb/display-bit.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/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_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-bwb/display-bit.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4355664fa2a6158e62d5701b8ccf1bad37ebc90f2ecb4b1919ebd02d94091d20 --- 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 17:53:06,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:53:06,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:53:06,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:53:06,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:53:06,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:53:06,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:53:06,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:53:06,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:53:06,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:53:06,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:53:06,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:53:06,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:53:06,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:53:06,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:53:06,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:53:06,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:53:06,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:53:06,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:53:06,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:53:06,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:53:06,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:53:06,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:53:06,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:53:06,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:53:06,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:53:06,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:53:06,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:53:06,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:53:06,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:53:06,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:53:06,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:53:06,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:53:06,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:53:06,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:53:06,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:53:06,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:53:06,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:53:06,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:53:06,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:53:06,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:53:06,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:53:06,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:53:06,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:53:06,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:53:06,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:53:06,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:53:06,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:53:06,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:53:06,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:53:06,960 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:53:06,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:53:06,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:53:06,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:53:06,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:53:06,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:53:06,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:53:06,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:53:06,962 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:53:06,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:53:06,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:53:06,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:53:06,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:53:06,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:53:06,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:53:06,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:53:06,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:53:06,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:53:06,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:53:06,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:53:06,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:53:06,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:53:06,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:53:06,966 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:53:06,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:53:06,967 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e31feede-ff62-4d04-94ca-c57a14b749ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4355664fa2a6158e62d5701b8ccf1bad37ebc90f2ecb4b1919ebd02d94091d20 [2022-11-25 17:53:07,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:53:07,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:53:07,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:53:07,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:53:07,360 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:53:07,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-bwb/display-bit.i [2022-11-25 17:53:10,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:53:10,831 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:53:10,832 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/sv-benchmarks/c/termination-bwb/display-bit.i [2022-11-25 17:53:10,843 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/data/b8eaa9c11/c9cdc5e2cc62460db66e9903686f81a2/FLAGdc35acfbb [2022-11-25 17:53:10,861 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/data/b8eaa9c11/c9cdc5e2cc62460db66e9903686f81a2 [2022-11-25 17:53:10,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:53:10,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:53:10,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:53:10,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:53:10,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:53:10,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:53:10" (1/1) ... [2022-11-25 17:53:10,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4479ef03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:10, skipping insertion in model container [2022-11-25 17:53:10,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:53:10" (1/1) ... [2022-11-25 17:53:10,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:53:10,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:53:11,216 WARN L623 FunctionHandler]: Unknown extern function putchar [2022-11-25 17:53:11,220 WARN L623 FunctionHandler]: Unknown extern function putchar [2022-11-25 17:53:11,224 WARN L623 FunctionHandler]: Unknown extern function putchar [2022-11-25 17:53:11,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:53:11,231 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:53:11,270 WARN L623 FunctionHandler]: Unknown extern function putchar [2022-11-25 17:53:11,271 WARN L623 FunctionHandler]: Unknown extern function putchar [2022-11-25 17:53:11,273 WARN L623 FunctionHandler]: Unknown extern function putchar [2022-11-25 17:53:11,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:53:11,297 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:53:11,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11 WrapperNode [2022-11-25 17:53:11,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:53:11,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:53:11,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:53:11,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:53:11,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,340 INFO L138 Inliner]: procedures = 88, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2022-11-25 17:53:11,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:53:11,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:53:11,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:53:11,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:53:11,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:53:11,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:53:11,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:53:11,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:53:11,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (1/1) ... [2022-11-25 17:53:11,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:53:11,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:53:11,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:53:11,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:53:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2022-11-25 17:53:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure displayBits [2022-11-25 17:53:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure displayBits [2022-11-25 17:53:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:53:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:53:11,567 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:53:11,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:53:11,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:53:11,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:53:11,760 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:53:11,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:11 BoogieIcfgContainer [2022-11-25 17:53:11,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:53:11,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:53:11,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:53:11,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:53:11,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:53:10" (1/3) ... [2022-11-25 17:53:11,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65819485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:53:11, skipping insertion in model container [2022-11-25 17:53:11,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:11" (2/3) ... [2022-11-25 17:53:11,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65819485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:53:11, skipping insertion in model container [2022-11-25 17:53:11,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:11" (3/3) ... [2022-11-25 17:53:11,830 INFO L112 eAbstractionObserver]: Analyzing ICFG display-bit.i [2022-11-25 17:53:11,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:53:11,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-25 17:53:12,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:53:12,027 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77c88948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:53:12,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 17:53:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:53:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 17:53:12,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:53:12,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:53:12,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting displayBitsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, displayBitsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-25 17:53:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash 28739122, now seen corresponding path program 1 times [2022-11-25 17:53:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703243436] [2022-11-25 17:53:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:53:12,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:53:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:53:12,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:53:12,270 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:53:12,272 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location displayBitsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2022-11-25 17:53:12,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-25 17:53:12,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-25 17:53:12,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location displayBitsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-25 17:53:12,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location displayBitsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-25 17:53:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:53:12,282 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:53:12,288 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:53:12,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:53:12 BoogieIcfgContainer [2022-11-25 17:53:12,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:53:12,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:53:12,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:53:12,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:53:12,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:11" (3/4) ... [2022-11-25 17:53:12,325 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:53:12,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:53:12,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:53:12,390 INFO L158 Benchmark]: Toolchain (without parser) took 1521.59ms. Allocated memory is still 151.0MB. Free memory was 106.6MB in the beginning and 109.3MB in the end (delta: -2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:53:12,395 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:53:12,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.49ms. Allocated memory is still 151.0MB. Free memory was 106.1MB in the beginning and 92.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:53:12,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.27ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 91.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:53:12,398 INFO L158 Benchmark]: Boogie Preprocessor took 26.02ms. Allocated memory is still 151.0MB. Free memory was 91.0MB in the beginning and 89.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:53:12,398 INFO L158 Benchmark]: RCFGBuilder took 394.11ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 79.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:53:12,399 INFO L158 Benchmark]: TraceAbstraction took 516.81ms. Allocated memory is still 151.0MB. Free memory was 122.0MB in the beginning and 111.5MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-25 17:53:12,400 INFO L158 Benchmark]: Witness Printer took 65.66ms. Allocated memory is still 151.0MB. Free memory was 111.5MB in the beginning and 109.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:53:12,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.49ms. Allocated memory is still 151.0MB. Free memory was 106.1MB in the beginning and 92.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.27ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 91.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.02ms. Allocated memory is still 151.0MB. Free memory was 91.0MB in the beginning and 89.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 394.11ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 79.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 516.81ms. Allocated memory is still 151.0MB. Free memory was 122.0MB in the beginning and 111.5MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Witness Printer took 65.66ms. Allocated memory is still 151.0MB. Free memory was 111.5MB in the beginning and 109.3MB 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 283]: integer overflow possible integer overflow possible We found a FailurePath: [L270] unsigned int number1= 65535; [L271] int mask = 1; [L272] unsigned int x; [L273] int c = 1; [L274] int y; VAL [c=1, mask=1, number1=65535, x=0, y=0] [L276] CALL displayBits(mask) VAL [\old(c)=1, \old(mask)=1, \old(value)=1, c=1, mask=1, number1=65535, x=0, y=0] [L283] 1<<31 VAL [\old(c)=1, \old(mask)=1, \old(value)=1, c=1, mask=1, number1=65535, value=1, x=0, y=0] - UnprovableResult [Line: 279]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 279]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 292]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 292]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:53:12,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e31feede-ff62-4d04-94ca-c57a14b749ec/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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(OVERFLOW)