./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh --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 7d60211a7234033b01fc51cb003992ddf0ad9ade350c20038139b7a8c4ba04d0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:34:59,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:34:59,429 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 16:34:59,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:34:59,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:34:59,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:34:59,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:34:59,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:34:59,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:34:59,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:34:59,462 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:34:59,463 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:34:59,463 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:34:59,464 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:34:59,464 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:34:59,465 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:34:59,465 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:34:59,466 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:34:59,466 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:34:59,467 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:34:59,468 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:34:59,468 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:34:59,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:34:59,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:34:59,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:34:59,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:34:59,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:34:59,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:34:59,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:34:59,472 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:34:59,473 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:34:59,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:34:59,473 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:34:59,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:34:59,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:34:59,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:34:59,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:59,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:34:59,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:34:59,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:34:59,483 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:34:59,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:34:59,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:34:59,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:34:59,484 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:34:59,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:34:59,485 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_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d60211a7234033b01fc51cb003992ddf0ad9ade350c20038139b7a8c4ba04d0 [2023-12-02 16:34:59,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:34:59,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:34:59,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:34:59,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:34:59,740 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:34:59,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i [2023-12-02 16:35:02,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:35:02,997 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:35:02,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i [2023-12-02 16:35:03,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data/a6b91d089/fe85668ff9cf46518d5fa2c754aca776/FLAG419f9fdfa [2023-12-02 16:35:03,044 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data/a6b91d089/fe85668ff9cf46518d5fa2c754aca776 [2023-12-02 16:35:03,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:35:03,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:35:03,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:35:03,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:35:03,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:35:03,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:35:03" (1/1) ... [2023-12-02 16:35:03,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279ca90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:03, skipping insertion in model container [2023-12-02 16:35:03,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:35:03" (1/1) ... [2023-12-02 16:35:03,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:35:04,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:35:04,142 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:35:04,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:35:04,442 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:04,442 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:04,442 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:04,443 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:04,451 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:35:04,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04 WrapperNode [2023-12-02 16:35:04,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:35:04,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:35:04,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:35:04,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:35:04,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,528 INFO L138 Inliner]: procedures = 501, calls = 58, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 98 [2023-12-02 16:35:04,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:35:04,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:35:04,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:35:04,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:35:04,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:35:04,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:35:04,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:35:04,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:35:04,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (1/1) ... [2023-12-02 16:35:04,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:35:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:35:04,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:35:04,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:35:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 16:35:04,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 16:35:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:35:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:35:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:35:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 16:35:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:35:04,884 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:35:04,887 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:35:05,107 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:35:05,293 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:35:05,293 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:35:05,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:35:05 BoogieIcfgContainer [2023-12-02 16:35:05,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:35:05,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:35:05,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:35:05,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:35:05,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:35:03" (1/3) ... [2023-12-02 16:35:05,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4375a6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:35:05, skipping insertion in model container [2023-12-02 16:35:05,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:04" (2/3) ... [2023-12-02 16:35:05,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4375a6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:35:05, skipping insertion in model container [2023-12-02 16:35:05,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:35:05" (3/3) ... [2023-12-02 16:35:05,310 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_53_bad.i [2023-12-02 16:35:05,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:35:05,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:35:05,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:35:05,389 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;@c967241, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:35:05,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:35:05,394 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) [2023-12-02 16:35:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:35:05,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:05,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:35:05,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 16:35:05,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash -98409075, now seen corresponding path program 1 times [2023-12-02 16:35:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:35:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015182650] [2023-12-02 16:35:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:35:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:35:05,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:35:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:35:05,826 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:35:05,827 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:35:05,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 16:35:05,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 16:35:05,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:35:05,836 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:35:05,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:35:05,853 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet111 [2023-12-02 16:35:05,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:35:05 BoogieIcfgContainer [2023-12-02 16:35:05,862 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:35:05,863 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:35:05,863 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:35:05,864 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:35:05,864 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:35:05" (3/4) ... [2023-12-02 16:35:05,866 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:35:05,867 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:35:05,869 INFO L158 Benchmark]: Toolchain (without parser) took 2819.53ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 86.6MB in the beginning and 83.0MB in the end (delta: 3.6MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2023-12-02 16:35:05,869 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:35:05,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1401.85ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 86.2MB in the beginning and 107.8MB in the end (delta: -21.6MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2023-12-02 16:35:05,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.18ms. Allocated memory is still 167.8MB. Free memory was 107.8MB in the beginning and 104.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:35:05,871 INFO L158 Benchmark]: Boogie Preprocessor took 36.78ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 103.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:35:05,872 INFO L158 Benchmark]: RCFGBuilder took 727.66ms. Allocated memory is still 167.8MB. Free memory was 102.4MB in the beginning and 123.9MB in the end (delta: -21.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 16:35:05,873 INFO L158 Benchmark]: TraceAbstraction took 564.16ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 84.0MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-12-02 16:35:05,873 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory was 84.0MB in the beginning and 83.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:35:05,877 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1401.85ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 86.2MB in the beginning and 107.8MB in the end (delta: -21.6MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.18ms. Allocated memory is still 167.8MB. Free memory was 107.8MB in the beginning and 104.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.78ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 103.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 727.66ms. Allocated memory is still 167.8MB. Free memory was 102.4MB in the beginning and 123.9MB in the end (delta: -21.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 564.16ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 84.0MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory was 84.0MB in the beginning and 83.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet111 - 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1559, 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)=4295000065, argc=4295000065, argv={4295000067:4295000066}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL CWE191_Integer_Underflow__int_rand_predec_53_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_53b_badSink(data) [L1567] CALL CWE191_Integer_Underflow__int_rand_predec_53c_badSink(data) [L1572] CALL CWE191_Integer_Underflow__int_rand_predec_53d_badSink(data) [L1577] --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: 1577]: 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: 0.5s, 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, 0.2s 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 [2023-12-02 16:35:05,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh --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 7d60211a7234033b01fc51cb003992ddf0ad9ade350c20038139b7a8c4ba04d0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:35:08,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:35:08,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 16:35:08,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:35:08,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:35:08,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:35:08,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:35:08,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:35:08,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:35:08,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:35:08,158 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:35:08,158 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:35:08,159 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:35:08,159 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:35:08,160 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:35:08,161 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:35:08,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:35:08,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:35:08,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:35:08,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:35:08,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:35:08,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:35:08,165 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:35:08,165 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:35:08,166 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:35:08,166 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:35:08,167 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:35:08,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:35:08,168 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:35:08,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:35:08,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:35:08,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:35:08,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:35:08,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:35:08,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:35:08,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:35:08,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:35:08,171 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:35:08,171 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:35:08,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:35:08,172 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:35:08,172 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:35:08,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:35:08,173 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_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d60211a7234033b01fc51cb003992ddf0ad9ade350c20038139b7a8c4ba04d0 [2023-12-02 16:35:08,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:35:08,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:35:08,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:35:08,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:35:08,510 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:35:08,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i [2023-12-02 16:35:11,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:35:11,936 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:35:11,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_53_bad.i [2023-12-02 16:35:11,962 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data/528ac18ce/418bb0dd1a27418e8c98c6d2645060a7/FLAG46f81262d [2023-12-02 16:35:11,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/data/528ac18ce/418bb0dd1a27418e8c98c6d2645060a7 [2023-12-02 16:35:11,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:35:11,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:35:11,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:35:11,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:35:11,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:35:11,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:35:11" (1/1) ... [2023-12-02 16:35:11,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f23d9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:11, skipping insertion in model container [2023-12-02 16:35:11,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:35:11" (1/1) ... [2023-12-02 16:35:12,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:35:12,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:35:12,919 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:35:13,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:35:13,211 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:13,212 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:13,212 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:13,212 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:35:13,221 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:35:13,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13 WrapperNode [2023-12-02 16:35:13,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:35:13,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:35:13,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:35:13,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:35:13,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,288 INFO L138 Inliner]: procedures = 506, calls = 58, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 66 [2023-12-02 16:35:13,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:35:13,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:35:13,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:35:13,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:35:13,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:35:13,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:35:13,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:35:13,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:35:13,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (1/1) ... [2023-12-02 16:35:13,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:35:13,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:35:13,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:35:13,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:35:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 16:35:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 16:35:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:35:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:35:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:35:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:35:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 16:35:13,596 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:35:13,599 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:35:13,762 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:35:13,812 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:35:13,813 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:35:13,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:35:13 BoogieIcfgContainer [2023-12-02 16:35:13,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:35:13,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:35:13,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:35:13,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:35:13,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:35:11" (1/3) ... [2023-12-02 16:35:13,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc8749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:35:13, skipping insertion in model container [2023-12-02 16:35:13,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:35:13" (2/3) ... [2023-12-02 16:35:13,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc8749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:35:13, skipping insertion in model container [2023-12-02 16:35:13,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:35:13" (3/3) ... [2023-12-02 16:35:13,825 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_53_bad.i [2023-12-02 16:35:13,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:35:13,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:35:13,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:35:13,910 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;@24c5c987, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:35:13,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:35:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-12-02 16:35:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 16:35:13,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:13,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:35:13,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 16:35:13,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1510681950, now seen corresponding path program 1 times [2023-12-02 16:35:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:35:13,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463895005] [2023-12-02 16:35:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:13,956 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 [2023-12-02 16:35:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:35:13,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 16:35:13,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:35:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:35:14,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:35:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:35:14,217 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 16:35:14,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:35:14,232 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 16:35:14,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 16:35:14,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:35:14,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 16:35:14,441 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:35:14,446 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:35:14,468 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet105 [2023-12-02 16:35:14,472 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet100 could not be translated [2023-12-02 16:35:14,472 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-12-02 16:35:14,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet96 could not be translated [2023-12-02 16:35:14,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet101 could not be translated [2023-12-02 16:35:14,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet102 could not be translated [2023-12-02 16:35:14,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:35:14 BoogieIcfgContainer [2023-12-02 16:35:14,483 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:35:14,484 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:35:14,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:35:14,485 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:35:14,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:35:13" (3/4) ... [2023-12-02 16:35:14,488 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:35:14,490 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:35:14,492 INFO L158 Benchmark]: Toolchain (without parser) took 2509.57ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 59.8MB in the end (delta: 12.1MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-12-02 16:35:14,492 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 62.9MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:35:14,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1238.64ms. Allocated memory is still 98.6MB. Free memory was 71.6MB in the beginning and 65.2MB in the end (delta: 6.3MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2023-12-02 16:35:14,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.58ms. Allocated memory is still 98.6MB. Free memory was 65.2MB in the beginning and 62.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:35:14,495 INFO L158 Benchmark]: Boogie Preprocessor took 42.59ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 60.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:35:14,496 INFO L158 Benchmark]: RCFGBuilder took 480.40ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 43.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 16:35:14,497 INFO L158 Benchmark]: TraceAbstraction took 666.73ms. Allocated memory is still 98.6MB. Free memory was 43.3MB in the beginning and 60.4MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:35:14,497 INFO L158 Benchmark]: Witness Printer took 5.98ms. Allocated memory is still 98.6MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:35:14,501 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 62.9MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1238.64ms. Allocated memory is still 98.6MB. Free memory was 71.6MB in the beginning and 65.2MB in the end (delta: 6.3MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.58ms. Allocated memory is still 98.6MB. Free memory was 65.2MB in the beginning and 62.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.59ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 60.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.40ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 43.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 666.73ms. Allocated memory is still 98.6MB. Free memory was 43.3MB in the beginning and 60.4MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.98ms. Allocated memory is still 98.6MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet105 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet101 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. * 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1559. 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)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL CWE191_Integer_Underflow__int_rand_predec_53_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_53b_badSink(data) [L1567] CALL CWE191_Integer_Underflow__int_rand_predec_53c_badSink(data) [L1572] CALL CWE191_Integer_Underflow__int_rand_predec_53d_badSink(data) [L1577] --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: 1577]: 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, 16 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=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 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 [2023-12-02 16:35:14,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a20e658e-7dca-4d87-873a-4fe731de9e3a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample