./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 018d38793f21ac9168278147432b60607b8e8b2da182fac2ca44031763572893 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:39,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:39,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:13:39,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:39,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:39,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:39,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:39,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:39,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:39,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:39,390 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:39,391 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:39,391 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:39,392 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:39,392 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:39,393 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:39,394 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:39,394 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:39,394 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:39,395 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:39,395 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:39,396 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:39,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:39,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:39,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:39,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:39,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:39,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:39,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:39,400 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:13:39,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:39,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:39,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:39,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:39,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:39,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:39,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:39,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:39,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:39,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:39,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:39,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:39,412 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:39,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:39,413 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 018d38793f21ac9168278147432b60607b8e8b2da182fac2ca44031763572893 [2023-11-12 00:13:39,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:39,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:39,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:39,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:39,754 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:39,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i [2023-11-12 00:13:42,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:43,354 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:43,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i [2023-11-12 00:13:43,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data/31194d1d8/3bb7b9daedc74db297a5c45660af9353/FLAG549f5532c [2023-11-12 00:13:43,405 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data/31194d1d8/3bb7b9daedc74db297a5c45660af9353 [2023-11-12 00:13:43,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:43,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:43,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:43,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:43,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:43,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:43" (1/1) ... [2023-11-12 00:13:43,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b1cba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:43, skipping insertion in model container [2023-11-12 00:13:43,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:43" (1/1) ... [2023-11-12 00:13:43,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:43,914 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:13:44,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:44,505 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:44,536 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:13:44,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:44,830 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:44,830 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:44,830 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:44,831 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:44,831 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:44,838 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:44,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44 WrapperNode [2023-11-12 00:13:44,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:44,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:44,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:44,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:44,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:44,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:44,971 INFO L138 Inliner]: procedures = 503, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 97 [2023-11-12 00:13:44,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:44,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:44,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:44,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:44,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:44,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:45,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:45,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:45,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:45,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (1/1) ... [2023-11-12 00:13:45,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:45,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:45,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:45,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:13:45,119 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:13:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:45,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:13:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:45,296 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:45,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:45,540 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:45,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:45,785 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:13:45,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:45 BoogieIcfgContainer [2023-11-12 00:13:45,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:45,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:45,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:45,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:45,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:43" (1/3) ... [2023-11-12 00:13:45,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d1f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:45, skipping insertion in model container [2023-11-12 00:13:45,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:44" (2/3) ... [2023-11-12 00:13:45,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d1f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:45, skipping insertion in model container [2023-11-12 00:13:45,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:45" (3/3) ... [2023-11-12 00:13:45,806 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_54_bad.i [2023-11-12 00:13:45,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:45,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:13:45,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:45,895 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=LoopHeads, 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;@26a618cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:45,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:13:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 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) [2023-11-12 00:13:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:13:45,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:45,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:13:45,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:13:45,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash 103933412, now seen corresponding path program 1 times [2023-11-12 00:13:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:45,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342467969] [2023-11-12 00:13:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:46,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:13:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:46,608 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:13:46,610 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:13:46,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-12 00:13:46,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-12 00:13:46,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:13:46,619 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:13:46,624 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:13:46,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:46 BoogieIcfgContainer [2023-11-12 00:13:46,657 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:13:46,659 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:13:46,659 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:13:46,660 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:13:46,660 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:45" (3/4) ... [2023-11-12 00:13:46,665 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:13:46,666 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:13:46,667 INFO L158 Benchmark]: Toolchain (without parser) took 3257.46ms. Allocated memory was 157.3MB in the beginning and 199.2MB in the end (delta: 41.9MB). Free memory was 121.4MB in the beginning and 131.2MB in the end (delta: -9.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-12 00:13:46,668 INFO L158 Benchmark]: CDTParser took 1.25ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 98.1MB in the end (delta: 68.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:46,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1428.49ms. Allocated memory is still 157.3MB. Free memory was 121.4MB in the beginning and 110.4MB in the end (delta: 11.0MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2023-11-12 00:13:46,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.90ms. Allocated memory is still 157.3MB. Free memory was 110.4MB in the beginning and 107.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:13:46,676 INFO L158 Benchmark]: Boogie Preprocessor took 62.24ms. Allocated memory is still 157.3MB. Free memory was 107.0MB in the beginning and 105.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:46,677 INFO L158 Benchmark]: RCFGBuilder took 757.41ms. Allocated memory is still 157.3MB. Free memory was 105.0MB in the beginning and 67.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-12 00:13:46,677 INFO L158 Benchmark]: TraceAbstraction took 860.16ms. Allocated memory was 157.3MB in the beginning and 199.2MB in the end (delta: 41.9MB). Free memory was 66.4MB in the beginning and 132.2MB in the end (delta: -65.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:46,679 INFO L158 Benchmark]: Witness Printer took 6.99ms. Allocated memory is still 199.2MB. Free memory is still 131.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:46,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25ms. Allocated memory is still 125.8MB. Free memory was 98.2MB in the beginning and 98.1MB in the end (delta: 68.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1428.49ms. Allocated memory is still 157.3MB. Free memory was 121.4MB in the beginning and 110.4MB in the end (delta: 11.0MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.90ms. Allocated memory is still 157.3MB. Free memory was 110.4MB in the beginning and 107.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.24ms. Allocated memory is still 157.3MB. Free memory was 107.0MB in the beginning and 105.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 757.41ms. Allocated memory is still 157.3MB. Free memory was 105.0MB in the beginning and 67.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 860.16ms. Allocated memory was 157.3MB in the beginning and 199.2MB in the end (delta: 41.9MB). Free memory was 66.4MB in the beginning and 132.2MB in the end (delta: -65.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.99ms. Allocated memory is still 199.2MB. Free memory is still 131.2MB. There was no memory consumed. 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 - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 1553. 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); [L1559] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1559] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=70366596694017, argc=70366596694017, argv={70366596694019:70366596694018}, argv={70366596694019:70366596694018}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL CWE191_Integer_Underflow__int_rand_predec_54_bad() [L1551] int data; [L1552] data = 0 [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) [L1553] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand() [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1554] CALL CWE191_Integer_Underflow__int_rand_predec_54b_badSink(data) [L1567] CALL CWE191_Integer_Underflow__int_rand_predec_54c_badSink(data) [L1572] CALL CWE191_Integer_Underflow__int_rand_predec_54d_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_rand_predec_54e_badSink(data) [L1582] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: 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, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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=12occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 [2023-11-12 00:13:46,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 018d38793f21ac9168278147432b60607b8e8b2da182fac2ca44031763572893 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:49,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:49,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-12 00:13:49,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:49,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:49,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:49,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:49,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:49,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:49,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:49,594 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:49,595 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:49,596 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:49,597 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:49,598 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:49,598 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:49,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:49,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:49,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:49,602 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:49,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:49,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:49,604 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:13:49,604 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:13:49,605 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:13:49,605 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:13:49,606 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:49,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:49,607 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:49,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:49,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:13:49,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:49,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:49,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:49,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:49,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:49,612 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:13:49,612 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:13:49,612 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:49,613 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:49,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:49,614 INFO L153 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_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 018d38793f21ac9168278147432b60607b8e8b2da182fac2ca44031763572893 [2023-11-12 00:13:50,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:50,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:50,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:50,043 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:50,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:50,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i [2023-11-12 00:13:53,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:53,543 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:53,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_54_bad.i [2023-11-12 00:13:53,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data/0591f8c7a/2827e13df46d495a994d626f33d42d28/FLAGaa6c6ab8e [2023-11-12 00:13:53,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/data/0591f8c7a/2827e13df46d495a994d626f33d42d28 [2023-11-12 00:13:53,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:53,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:53,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:53,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:53,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:53,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:53" (1/1) ... [2023-11-12 00:13:53,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5bea2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:53, skipping insertion in model container [2023-11-12 00:13:53,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:53" (1/1) ... [2023-11-12 00:13:53,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:54,141 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:13:54,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:54,719 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:54,751 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:13:54,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:55,022 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:55,023 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:55,023 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:55,023 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:55,023 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:13:55,032 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:55,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55 WrapperNode [2023-11-12 00:13:55,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:55,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:55,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:55,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:55,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,116 INFO L138 Inliner]: procedures = 508, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 65 [2023-11-12 00:13:55,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:55,117 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:55,117 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:55,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:55,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:55,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:55,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:55,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:55,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (1/1) ... [2023-11-12 00:13:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:55,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:55,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:55,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:13:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:13:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:13:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:13:55,471 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:55,473 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:55,707 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:55,713 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:55,713 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:13:55,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:55 BoogieIcfgContainer [2023-11-12 00:13:55,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:55,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:55,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:55,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:55,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:53" (1/3) ... [2023-11-12 00:13:55,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67430de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:55, skipping insertion in model container [2023-11-12 00:13:55,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:55" (2/3) ... [2023-11-12 00:13:55,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67430de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:55, skipping insertion in model container [2023-11-12 00:13:55,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:55" (3/3) ... [2023-11-12 00:13:55,732 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_54_bad.i [2023-11-12 00:13:55,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:55,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:13:55,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:55,825 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=LoopHeads, 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;@509d7cd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:55,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:13:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 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) [2023-11-12 00:13:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:55,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:55,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:55,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:13:55,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1515872846, now seen corresponding path program 1 times [2023-11-12 00:13:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173843387] [2023-11-12 00:13:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:55,870 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 [2023-11-12 00:13:55,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:55,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:13:55,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:13:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:56,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:13:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:13:56,160 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-12 00:13:56,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:13:56,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-12 00:13:56,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-12 00:13:56,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:13:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:13:56,399 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:13:56,403 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:13:56,423 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet101 could not be translated [2023-11-12 00:13:56,424 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet100 could not be translated [2023-11-12 00:13:56,424 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet96 could not be translated [2023-11-12 00:13:56,424 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-11-12 00:13:56,425 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet102 could not be translated [2023-11-12 00:13:56,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:56 BoogieIcfgContainer [2023-11-12 00:13:56,433 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:13:56,433 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:13:56,433 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:13:56,434 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:13:56,434 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:55" (3/4) ... [2023-11-12 00:13:56,435 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:13:56,443 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet101 could not be translated [2023-11-12 00:13:56,443 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-11-12 00:13:56,443 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet100 could not be translated [2023-11-12 00:13:56,443 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet102 could not be translated [2023-11-12 00:13:56,444 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet96 could not be translated [2023-11-12 00:13:56,495 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:13:56,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:13:56,497 INFO L158 Benchmark]: Toolchain (without parser) took 2891.22ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 54.4MB in the beginning and 67.9MB in the end (delta: -13.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-12 00:13:56,497 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:56,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1425.15ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 49.5MB in the end (delta: 4.7MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2023-11-12 00:13:56,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.27ms. Allocated memory is still 81.8MB. Free memory was 49.5MB in the beginning and 46.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:13:56,499 INFO L158 Benchmark]: Boogie Preprocessor took 37.50ms. Allocated memory is still 81.8MB. Free memory was 46.1MB in the beginning and 44.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:13:56,500 INFO L158 Benchmark]: RCFGBuilder took 563.12ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 68.8MB in the end (delta: -24.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-11-12 00:13:56,501 INFO L158 Benchmark]: TraceAbstraction took 711.11ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 51.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:13:56,501 INFO L158 Benchmark]: Witness Printer took 62.05ms. Allocated memory is still 98.6MB. Free memory was 51.2MB in the beginning and 67.9MB in the end (delta: -16.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:13:56,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1425.15ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 49.5MB in the end (delta: 4.7MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.27ms. Allocated memory is still 81.8MB. Free memory was 49.5MB in the beginning and 46.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.50ms. Allocated memory is still 81.8MB. Free memory was 46.1MB in the beginning and 44.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 563.12ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 68.8MB in the end (delta: -24.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 711.11ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 51.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 62.05ms. Allocated memory is still 98.6MB. Free memory was 51.2MB in the beginning and 67.9MB in the end (delta: -16.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet102 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet102 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet96 could not be translated - 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: 1582]: 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1559] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1559] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL CWE191_Integer_Underflow__int_rand_predec_54_bad() [L1551] int data; [L1552] data = 0 [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1553] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1554] CALL CWE191_Integer_Underflow__int_rand_predec_54b_badSink(data) [L1567] CALL CWE191_Integer_Underflow__int_rand_predec_54c_badSink(data) [L1572] CALL CWE191_Integer_Underflow__int_rand_predec_54d_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_rand_predec_54e_badSink(data) [L1582] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: 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, 25 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=25occurred 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, 11 NumberOfCodeBlocks, 11 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! [2023-11-12 00:13:56,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca18852-239f-4a68-99c0-50aeb7893051/bin/utaipan-verify-NcY6lQBIFX/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)