./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 7daf5f93fb423548f74816741fd44894a1bb8a4405cb2d0f5b1bdce1d257fd36 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:33,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:33,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:56:33,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:33,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:33,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:33,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:33,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:33,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:33,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:33,321 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:33,322 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:33,323 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:33,323 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:33,324 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:33,324 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:33,325 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:33,325 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:33,326 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:33,327 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:33,327 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:33,328 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:33,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:33,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:33,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:33,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:33,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:33,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:33,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:33,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:56:33,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:56:33,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:33,333 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:33,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:33,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:33,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:33,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:33,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:33,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:33,336 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:33,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:33,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:33,342 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:33,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:33,342 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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7daf5f93fb423548f74816741fd44894a1bb8a4405cb2d0f5b1bdce1d257fd36 [2023-11-12 00:56:33,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:33,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:33,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:33,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:33,664 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:33,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i [2023-11-12 00:56:36,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:37,271 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:37,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i [2023-11-12 00:56:37,300 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data/20bb7de8b/121f30c4d20647d8ab77e29729151aee/FLAGb9bcc4387 [2023-11-12 00:56:37,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data/20bb7de8b/121f30c4d20647d8ab77e29729151aee [2023-11-12 00:56:37,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:37,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:37,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:37,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:37,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:37,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:37" (1/1) ... [2023-11-12 00:56:37,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49727980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:37, skipping insertion in model container [2023-11-12 00:56:37,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:37" (1/1) ... [2023-11-12 00:56:37,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:37,796 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:56:38,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:38,427 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:38,467 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:56:38,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:38,732 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:38,733 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:38,733 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:38,734 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:38,734 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:38,734 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:38,743 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:38,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38 WrapperNode [2023-11-12 00:56:38,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:38,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:38,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:38,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:38,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,827 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-11-12 00:56:38,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:38,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:38,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:38,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:38,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:38,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:38,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:38,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:38,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (1/1) ... [2023-11-12 00:56:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:38,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:38,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-12 00:56:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:56:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:56:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:56:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:39,146 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:39,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:39,273 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:39,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:39,331 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:56:39,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:39 BoogieIcfgContainer [2023-11-12 00:56:39,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:39,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:39,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:39,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:39,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:37" (1/3) ... [2023-11-12 00:56:39,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd5e66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:39, skipping insertion in model container [2023-11-12 00:56:39,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:38" (2/3) ... [2023-11-12 00:56:39,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd5e66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:39, skipping insertion in model container [2023-11-12 00:56:39,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:39" (3/3) ... [2023-11-12 00:56:39,344 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i [2023-11-12 00:56:39,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:39,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:56:39,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:39,422 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;@57949ef7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:39,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:56:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:56:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:56:39,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:39,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:39,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:56:39,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 918151545, now seen corresponding path program 1 times [2023-11-12 00:56:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:39,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796825802] [2023-11-12 00:56:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:39,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:39,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796825802] [2023-11-12 00:56:39,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796825802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:39,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:39,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:56:39,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370614821] [2023-11-12 00:56:39,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:39,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:39,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:39,974 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:56:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:40,039 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-12 00:56:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-12 00:56:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:40,050 INFO L225 Difference]: With dead ends: 15 [2023-11-12 00:56:40,050 INFO L226 Difference]: Without dead ends: 11 [2023-11-12 00:56:40,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:40,056 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:40,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:56:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-12 00:56:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-12 00:56:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.1428571428571428) 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 00:56:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-12 00:56:40,092 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2023-11-12 00:56:40,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:40,094 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-12 00:56:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:56:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-12 00:56:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:56:40,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:40,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:56:40,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:56:40,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1602073121, now seen corresponding path program 1 times [2023-11-12 00:56:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:40,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761443492] [2023-11-12 00:56:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:40,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:56:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:40,186 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:56:40,186 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:56:40,188 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-12 00:56:40,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-12 00:56:40,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:56:40,195 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:56:40,199 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:56:40,218 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated [2023-11-12 00:56:40,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:56:40 BoogieIcfgContainer [2023-11-12 00:56:40,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:56:40,228 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:56:40,229 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:56:40,229 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:56:40,229 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:39" (3/4) ... [2023-11-12 00:56:40,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:56:40,233 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:56:40,234 INFO L158 Benchmark]: Toolchain (without parser) took 2915.00ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 83.0MB in the beginning and 107.3MB in the end (delta: -24.3MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-11-12 00:56:40,234 INFO L158 Benchmark]: CDTParser took 1.19ms. Allocated memory is still 132.1MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:40,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1428.48ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 82.7MB in the beginning and 103.0MB in the end (delta: -20.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2023-11-12 00:56:40,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.25ms. Allocated memory is still 169.9MB. Free memory was 103.0MB in the beginning and 100.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:40,236 INFO L158 Benchmark]: Boogie Preprocessor took 31.10ms. Allocated memory is still 169.9MB. Free memory was 99.6MB in the beginning and 98.8MB in the end (delta: 842.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:40,237 INFO L158 Benchmark]: RCFGBuilder took 474.02ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 82.8MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:56:40,237 INFO L158 Benchmark]: TraceAbstraction took 891.44ms. Allocated memory is still 169.9MB. Free memory was 82.0MB in the beginning and 108.4MB in the end (delta: -26.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:40,238 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 169.9MB. Free memory was 108.4MB in the beginning and 107.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:40,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19ms. Allocated memory is still 132.1MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1428.48ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 82.7MB in the beginning and 103.0MB in the end (delta: -20.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.25ms. Allocated memory is still 169.9MB. Free memory was 103.0MB in the beginning and 100.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.10ms. Allocated memory is still 169.9MB. Free memory was 99.6MB in the beginning and 98.8MB in the end (delta: 842.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 474.02ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 82.8MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 891.44ms. Allocated memory is still 169.9MB. Free memory was 82.0MB in the beginning and 108.4MB in the end (delta: -26.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 169.9MB. Free memory was 108.4MB in the beginning and 107.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post99 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1574. 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); [L1563] 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) [L1563] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=2147483648, argc=2147483648, argv={2147483650:2147483649}, argv={2147483650:2147483649}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] CALL CWE190_Integer_Overflow__int_fgets_postinc_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE190_Integer_Overflow__int_fgets_postinc_61b_badSource(data) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1572] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1574] EXPR data = atoi(inputBuffer) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1570-L1580] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1581] return data; [L1553] RET, EXPR CWE190_Integer_Overflow__int_fgets_postinc_61b_badSource(data) [L1553] data = CWE190_Integer_Overflow__int_fgets_postinc_61b_badSource(data) [L1555] data++ VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 00:56:40,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/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 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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 7daf5f93fb423548f74816741fd44894a1bb8a4405cb2d0f5b1bdce1d257fd36 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:42,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:43,135 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-12 00:56:43,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:43,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:43,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:43,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:43,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:43,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:43,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:43,195 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:43,196 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:43,196 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:43,198 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:43,198 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:43,199 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:43,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:43,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:43,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:43,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:43,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:43,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:43,203 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:56:43,204 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:56:43,204 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:56:43,205 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:56:43,205 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:56:43,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:43,206 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:43,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:43,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:56:43,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:43,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:43,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:43,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:43,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:43,210 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:56:43,210 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:56:43,210 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:43,211 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:43,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:43,212 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_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7daf5f93fb423548f74816741fd44894a1bb8a4405cb2d0f5b1bdce1d257fd36 [2023-11-12 00:56:43,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:43,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:43,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:43,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:43,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:43,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i [2023-11-12 00:56:46,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:47,392 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:47,393 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i [2023-11-12 00:56:47,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data/76bfd3dae/36cbbdc2898242e1906e261e332ba7a3/FLAGd1acbc463 [2023-11-12 00:56:47,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/data/76bfd3dae/36cbbdc2898242e1906e261e332ba7a3 [2023-11-12 00:56:47,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:47,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:47,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:47,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:47,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:47,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63909ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47, skipping insertion in model container [2023-11-12 00:56:47,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:48,046 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:56:48,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:48,886 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:48,919 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:56:48,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:49,129 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:49,129 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:49,129 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:49,130 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:49,130 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:49,130 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:49,138 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:49,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49 WrapperNode [2023-11-12 00:56:49,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:49,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:49,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:49,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:49,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,223 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-11-12 00:56:49,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:49,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:49,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:49,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:49,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:49,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:49,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:49,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:49,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (1/1) ... [2023-11-12 00:56:49,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:49,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:49,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:49,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-12 00:56:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:56:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:56:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:56:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:56:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-12 00:56:49,650 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:49,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:49,855 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:49,861 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:49,861 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:56:49,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:49 BoogieIcfgContainer [2023-11-12 00:56:49,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:49,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:49,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:49,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:49,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:47" (1/3) ... [2023-11-12 00:56:49,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561b6a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:49, skipping insertion in model container [2023-11-12 00:56:49,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:49" (2/3) ... [2023-11-12 00:56:49,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561b6a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:49, skipping insertion in model container [2023-11-12 00:56:49,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:49" (3/3) ... [2023-11-12 00:56:49,879 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_postinc_61_bad.i [2023-11-12 00:56:49,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:49,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:56:49,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:49,963 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;@b6aeca9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:49,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:56:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:56:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:56:49,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:49,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:49,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:56:49,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2023-11-12 00:56:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:49,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40031566] [2023-11-12 00:56:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:49,994 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 00:56:49,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:49,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 00:56:50,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 00:56:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:50,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:56:50,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:50,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:50,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:56:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40031566] [2023-11-12 00:56:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40031566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:50,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:50,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:56:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645902788] [2023-11-12 00:56:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:50,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:56:50,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:56:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:56:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:50,211 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:56:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:50,230 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-12 00:56:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:56:50,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-12 00:56:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:50,239 INFO L225 Difference]: With dead ends: 23 [2023-11-12 00:56:50,240 INFO L226 Difference]: Without dead ends: 15 [2023-11-12 00:56:50,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:50,247 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:50,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:56:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-12 00:56:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-12 00:56:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 00:56:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-12 00:56:50,287 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2023-11-12 00:56:50,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:50,289 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-12 00:56:50,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:56:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-12 00:56:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:56:50,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:50,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:50,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 00:56:50,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 00:56:50,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:56:50,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash -509435128, now seen corresponding path program 1 times [2023-11-12 00:56:50,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:56:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78064837] [2023-11-12 00:56:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:50,507 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 00:56:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:56:50,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 00:56:50,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 (3)] Waiting until timeout for monitored process [2023-11-12 00:56:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:50,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:56:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:50,797 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-12 00:56:50,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:56:50,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-12 00:56:50,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-12 00:56:50,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 00:56:51,006 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:56:51,011 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:56:51,052 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post97 could not be translated [2023-11-12 00:56:51,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:56:51 BoogieIcfgContainer [2023-11-12 00:56:51,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:56:51,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:56:51,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:56:51,068 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:56:51,069 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:49" (3/4) ... [2023-11-12 00:56:51,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:56:51,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:56:51,075 INFO L158 Benchmark]: Toolchain (without parser) took 3636.48ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 67.1MB in the end (delta: -13.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-12 00:56:51,081 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:51,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1701.31ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 53.8MB in the beginning and 54.7MB in the end (delta: -846.9kB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:51,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.67ms. Allocated memory is still 104.9MB. Free memory was 54.7MB in the beginning and 51.5MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:51,084 INFO L158 Benchmark]: Boogie Preprocessor took 80.70ms. Allocated memory is still 104.9MB. Free memory was 51.5MB in the beginning and 49.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:56:51,084 INFO L158 Benchmark]: RCFGBuilder took 557.33ms. Allocated memory is still 104.9MB. Free memory was 49.5MB in the beginning and 66.0MB in the end (delta: -16.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2023-11-12 00:56:51,087 INFO L158 Benchmark]: TraceAbstraction took 1201.71ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 67.7MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:51,093 INFO L158 Benchmark]: Witness Printer took 5.08ms. Allocated memory is still 104.9MB. Free memory was 67.7MB in the beginning and 67.1MB in the end (delta: 628.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:56:51,096 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1701.31ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 53.8MB in the beginning and 54.7MB in the end (delta: -846.9kB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.67ms. Allocated memory is still 104.9MB. Free memory was 54.7MB in the beginning and 51.5MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.70ms. Allocated memory is still 104.9MB. Free memory was 51.5MB in the beginning and 49.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 557.33ms. Allocated memory is still 104.9MB. Free memory was 49.5MB in the beginning and 66.0MB in the end (delta: -16.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1201.71ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 67.7MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.08ms. Allocated memory is still 104.9MB. Free memory was 67.7MB in the beginning and 67.1MB in the end (delta: 628.8kB). 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: IdentifierExpression #t~post97 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1574. 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] 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) [L1563] 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] [L1564] CALL CWE190_Integer_Overflow__int_fgets_postinc_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE190_Integer_Overflow__int_fgets_postinc_61b_badSource(data) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1572] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1574] EXPR data = atoi(inputBuffer) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1570-L1580] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1581] return data; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=0, \result=2147483647, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] RET, EXPR CWE190_Integer_Overflow__int_fgets_postinc_61b_badSource(data) [L1553] data = CWE190_Integer_Overflow__int_fgets_postinc_61b_badSource(data) [L1555] data++ VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 00:56:51,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cc7c04-5a3a-4c5f-a2f0-c81d9c48b19b/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 Result: UNKNOWN: Overapproximated counterexample