./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 529c5f153063cc5ff6c3961268cce7a1a9eb1b4894b5183b16333d385eaddca4 --- 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 14:47:36,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:47:36,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:47:36,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:47:36,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:47:36,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:47:36,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:47:36,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:47:36,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:47:36,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:47:36,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:47:36,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:47:36,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:47:36,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:47:36,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:47:36,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:47:36,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:47:36,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:47:36,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:47:36,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:47:36,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:47:36,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:47:36,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:47:36,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:47:36,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:47:36,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:47:36,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:47:36,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:47:36,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:47:36,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:47:36,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:47:36,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:47:36,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:47:36,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:47:36,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:47:36,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:47:36,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:47:36,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:47:36,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:47:36,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:47:36,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:47:36,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 14:47:36,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:47:36,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:47:36,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:47:36,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:47:36,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:47:36,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:47:36,306 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:47:36,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:47:36,307 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:47:36,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:47:36,308 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:47:36,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:47:36,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:47:36,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:47:36,309 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:47:36,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:47:36,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:47:36,309 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:47:36,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:47:36,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:47:36,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:47:36,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:47:36,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:47:36,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:47:36,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:47:36,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:47:36,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:47:36,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:47:36,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:47:36,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:47:36,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:47:36,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:47:36,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:47:36,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:47:36,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529c5f153063cc5ff6c3961268cce7a1a9eb1b4894b5183b16333d385eaddca4 [2022-11-23 14:47:36,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:47:36,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:47:36,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:47:36,615 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:47:36,616 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:47:36,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i [2022-11-23 14:47:39,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:47:40,046 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:47:40,047 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i [2022-11-23 14:47:40,073 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data/172f51283/37aedbd5279a481fa80fa56cbb8feb6f/FLAG12c880583 [2022-11-23 14:47:40,090 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data/172f51283/37aedbd5279a481fa80fa56cbb8feb6f [2022-11-23 14:47:40,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:47:40,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:47:40,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:47:40,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:47:40,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:47:40,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:40" (1/1) ... [2022-11-23 14:47:40,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371fb60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:40, skipping insertion in model container [2022-11-23 14:47:40,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:40" (1/1) ... [2022-11-23 14:47:40,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:47:40,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:47:40,617 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:47:41,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:47:41,246 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:47:41,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:47:41,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:47:41,536 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:47:41,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41 WrapperNode [2022-11-23 14:47:41,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:47:41,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:47:41,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:47:41,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:47:41,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,624 INFO L138 Inliner]: procedures = 500, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2022-11-23 14:47:41,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:47:41,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:47:41,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:47:41,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:47:41,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:47:41,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:47:41,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:47:41,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:47:41,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (1/1) ... [2022-11-23 14:47:41,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:47:41,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:47:41,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:47:41,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:47:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:47:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:47:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:47:41,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:47:41,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:47:42,172 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:47:42,241 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:47:42,242 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:47:42,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:42 BoogieIcfgContainer [2022-11-23 14:47:42,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:47:42,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:47:42,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:47:42,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:47:42,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:47:40" (1/3) ... [2022-11-23 14:47:42,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdefaa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:42, skipping insertion in model container [2022-11-23 14:47:42,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:41" (2/3) ... [2022-11-23 14:47:42,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdefaa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:42, skipping insertion in model container [2022-11-23 14:47:42,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:42" (3/3) ... [2022-11-23 14:47:42,255 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_22_bad.i [2022-11-23 14:47:42,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:47:42,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:47:42,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:47:42,329 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=FINITE_AUTOMATA, 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;@34acf223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:47:42,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:47:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:47:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:47:42,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:47:42,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:47:42,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:47:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:47:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1699350023, now seen corresponding path program 1 times [2022-11-23 14:47:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:47:42,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598006847] [2022-11-23 14:47:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:47:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:47:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:47:42,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:47:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:47:42,737 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:47:42,739 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:47:42,740 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:47:42,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:47:42,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:47:42,747 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:47:42,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:47:42,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:47:42 BoogieIcfgContainer [2022-11-23 14:47:42,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:47:42,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:47:42,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:47:42,795 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:47:42,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:42" (3/4) ... [2022-11-23 14:47:42,801 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:47:42,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:47:42,803 INFO L158 Benchmark]: Toolchain (without parser) took 2704.96ms. Allocated memory is still 151.0MB. Free memory was 117.5MB in the beginning and 64.5MB in the end (delta: 53.0MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2022-11-23 14:47:42,803 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 58.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:47:42,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1438.94ms. Allocated memory is still 151.0MB. Free memory was 117.0MB in the beginning and 110.6MB in the end (delta: 6.4MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2022-11-23 14:47:42,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.74ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 107.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:42,806 INFO L158 Benchmark]: Boogie Preprocessor took 57.05ms. Allocated memory is still 151.0MB. Free memory was 107.2MB in the beginning and 105.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:42,811 INFO L158 Benchmark]: RCFGBuilder took 562.02ms. Allocated memory is still 151.0MB. Free memory was 105.7MB in the beginning and 86.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 14:47:42,812 INFO L158 Benchmark]: TraceAbstraction took 545.38ms. Allocated memory is still 151.0MB. Free memory was 86.2MB in the beginning and 64.5MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:42,813 INFO L158 Benchmark]: Witness Printer took 6.67ms. Allocated memory is still 151.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:47:42,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory is still 58.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1438.94ms. Allocated memory is still 151.0MB. Free memory was 117.0MB in the beginning and 110.6MB in the end (delta: 6.4MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.74ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 107.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.05ms. Allocated memory is still 151.0MB. Free memory was 107.2MB in the beginning and 105.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.02ms. Allocated memory is still 151.0MB. Free memory was 105.7MB in the beginning and 86.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 545.38ms. Allocated memory is still 151.0MB. Free memory was 86.2MB in the beginning and 64.5MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 6.67ms. Allocated memory is still 151.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseXor at line 1554, overapproximation of bitwiseAnd at line 1554. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_rand_predec_22_badGlobal = 0; [L1561] CALL printLine("Calling bad()...") VAL [#in~line={2:0}, CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1561] RET printLine("Calling bad()...") VAL [#in~argv={2147516419:2147516418}, argc=2147516417, argv={2147516419:2147516418}, CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=2147516417] [L1562] CALL CWE191_Integer_Underflow__int_rand_predec_22_bad() [L1552] int data; [L1553] data = 0 [L1554] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1554] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1554] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1555] CWE191_Integer_Underflow__int_rand_predec_22_badGlobal = 1 [L1556] CALL CWE191_Integer_Underflow__int_rand_predec_22_badSink(data) [L1569] COND TRUE \read(CWE191_Integer_Underflow__int_rand_predec_22_badGlobal) VAL [CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=1, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~data-unknown=-2147483648] [L1572] --data VAL [CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=1, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~data-unknown=-2147483648] - UnprovableResult [Line: 1572]: 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, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=14occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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 could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:47:42,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 529c5f153063cc5ff6c3961268cce7a1a9eb1b4894b5183b16333d385eaddca4 --- 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 14:47:45,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:47:45,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:47:45,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:47:45,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:47:45,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:47:45,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:47:45,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:47:45,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:47:45,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:47:45,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:47:45,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:47:45,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:47:45,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:47:45,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:47:45,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:47:45,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:47:45,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:47:45,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:47:45,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:47:45,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:47:45,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:47:45,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:47:45,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:47:45,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:47:45,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:47:45,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:47:45,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:47:45,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:47:45,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:47:45,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:47:45,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:47:45,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:47:45,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:47:45,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:47:45,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:47:45,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:47:45,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:47:45,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:47:45,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:47:45,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:47:45,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 14:47:45,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:47:45,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:47:45,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:47:45,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:47:45,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:47:45,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:47:45,511 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:47:45,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:47:45,512 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:47:45,512 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:47:45,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:47:45,514 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:47:45,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:47:45,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:47:45,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:47:45,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:47:45,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:47:45,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:47:45,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:47:45,516 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:47:45,517 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:47:45,517 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:47:45,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:47:45,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:47:45,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:47:45,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:47:45,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:47:45,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:47:45,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:47:45,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:47:45,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:47:45,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:47:45,521 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:47:45,521 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:47:45,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:47:45,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:47:45,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:47:45,522 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529c5f153063cc5ff6c3961268cce7a1a9eb1b4894b5183b16333d385eaddca4 [2022-11-23 14:47:45,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:47:45,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:47:45,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:47:45,955 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:47:45,955 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:47:45,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i [2022-11-23 14:47:49,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:47:49,576 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:47:49,577 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_22_bad.i [2022-11-23 14:47:49,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data/69e416b30/d3da3cacb3924c1e98577d9c6fd9342b/FLAGae558ca9b [2022-11-23 14:47:49,626 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/data/69e416b30/d3da3cacb3924c1e98577d9c6fd9342b [2022-11-23 14:47:49,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:47:49,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:47:49,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:47:49,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:47:49,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:47:49,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:49" (1/1) ... [2022-11-23 14:47:49,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3136f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:49, skipping insertion in model container [2022-11-23 14:47:49,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:49" (1/1) ... [2022-11-23 14:47:49,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:47:49,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:47:50,151 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:47:50,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:47:50,774 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:47:50,809 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:47:50,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:47:51,066 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:47:51,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51 WrapperNode [2022-11-23 14:47:51,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:47:51,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:47:51,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:47:51,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:47:51,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,150 INFO L138 Inliner]: procedures = 505, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2022-11-23 14:47:51,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:47:51,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:47:51,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:47:51,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:47:51,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:47:51,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:47:51,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:47:51,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:47:51,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (1/1) ... [2022-11-23 14:47:51,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:47:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:47:51,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:47:51,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:47:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:47:51,275 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:47:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:47:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:47:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:47:51,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:47:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:47:51,428 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:47:51,430 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:47:51,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:47:51,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:47:51,718 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:47:51,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:51 BoogieIcfgContainer [2022-11-23 14:47:51,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:47:51,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:47:51,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:47:51,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:47:51,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:47:49" (1/3) ... [2022-11-23 14:47:51,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1455b339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:51, skipping insertion in model container [2022-11-23 14:47:51,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:51" (2/3) ... [2022-11-23 14:47:51,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1455b339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:51, skipping insertion in model container [2022-11-23 14:47:51,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:51" (3/3) ... [2022-11-23 14:47:51,736 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_22_bad.i [2022-11-23 14:47:51,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:47:51,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:47:51,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:47:51,828 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=FINITE_AUTOMATA, 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;@6f57da68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:47:51,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:47:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:47:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:47:51,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:47:51,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:47:51,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:47:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:47:51,852 INFO L85 PathProgramCache]: Analyzing trace with hash 420466469, now seen corresponding path program 1 times [2022-11-23 14:47:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:47:51,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5369665] [2022-11-23 14:47:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:47:51,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:47:51,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:47:51,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:47:51,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:47:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:47:52,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:47:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:47:52,139 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:47:52,142 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:47:52,144 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:47:52,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:47:52,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:47:52,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:47:52,371 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:47:52,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:47:52,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:47:52 BoogieIcfgContainer [2022-11-23 14:47:52,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:47:52,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:47:52,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:47:52,410 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:47:52,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:51" (3/4) ... [2022-11-23 14:47:52,412 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 14:47:52,460 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:47:52,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:47:52,462 INFO L158 Benchmark]: Toolchain (without parser) took 2830.73ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 49.8MB in the beginning and 40.9MB in the end (delta: 8.9MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,462 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:47:52,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1434.87ms. Allocated memory is still 75.5MB. Free memory was 49.6MB in the beginning and 43.3MB in the end (delta: 6.3MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.26ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 40.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,464 INFO L158 Benchmark]: Boogie Preprocessor took 42.57ms. Allocated memory is still 75.5MB. Free memory was 40.1MB in the beginning and 38.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,465 INFO L158 Benchmark]: RCFGBuilder took 528.23ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 38.0MB in the beginning and 60.4MB in the end (delta: -22.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,466 INFO L158 Benchmark]: TraceAbstraction took 684.24ms. Allocated memory is still 92.3MB. Free memory was 59.9MB in the beginning and 43.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,466 INFO L158 Benchmark]: Witness Printer took 51.23ms. Allocated memory is still 92.3MB. Free memory was 43.0MB in the beginning and 40.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:47:52,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1434.87ms. Allocated memory is still 75.5MB. Free memory was 49.6MB in the beginning and 43.3MB in the end (delta: 6.3MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.26ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 40.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.57ms. Allocated memory is still 75.5MB. Free memory was 40.1MB in the beginning and 38.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.23ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 38.0MB in the beginning and 60.4MB in the end (delta: -22.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 684.24ms. Allocated memory is still 92.3MB. Free memory was 59.9MB in the beginning and 43.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 51.23ms. Allocated memory is still 92.3MB. Free memory was 43.0MB in the beginning and 40.9MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1572]: integer overflow possible integer overflow possible We found a FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_rand_predec_22_badGlobal = 0; VAL [CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] CALL printLine("Calling bad()...") VAL [#in~line={2:0}, CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1561] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=12, argv={13:12}, CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=12] [L1562] CALL CWE191_Integer_Underflow__int_rand_predec_22_bad() [L1552] int data; [L1553] data = 0 [L1554] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1554] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 VAL [CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=0, data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, rand()=1073741823, rand()=0, rand()=0, rand()=1, rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1=-2147483648] [L1554] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1555] CWE191_Integer_Underflow__int_rand_predec_22_badGlobal = 1 [L1556] CALL CWE191_Integer_Underflow__int_rand_predec_22_badSink(data) [L1569] COND TRUE \read(CWE191_Integer_Underflow__int_rand_predec_22_badGlobal) VAL [CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=1, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~data-unknown=-2147483648] [L1572] --data VAL [CWE191_Integer_Underflow__int_rand_predec_22_badGlobal=1, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~data-unknown=-2147483648] - UnprovableResult [Line: 1572]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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=23occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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! [2022-11-23 14:47:52,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16e28e8-0405-4dc9-8424-c9b67a6bf7a0/bin/utaipan-Q6hlc19bkW/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)