./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E --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 e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:32:40,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:32:40,852 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-14 04:32:40,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:32:40,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:32:40,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:32:40,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:32:40,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:32:40,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:32:40,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:32:40,897 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:32:40,898 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:32:40,898 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:32:40,899 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:32:40,899 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:32:40,899 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:32:40,899 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:32:40,899 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:32:40,899 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:32:40,900 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:32:40,900 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:32:40,900 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:32:40,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:32:40,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:32:40,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:32:40,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:32:40,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:32:40,903 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:32:40,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:32:40,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:32:40,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:32:40,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:40,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:32:40,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:32:40,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:32:40,904 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:32:40,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:32:40,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:32:40,905 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:32:40,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:32:40,905 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E 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 -> e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 [2024-11-14 04:32:41,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:32:41,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:32:41,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:32:41,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:32:41,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:32:41,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i Unable to find full path for "g++" [2024-11-14 04:32:43,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:32:43,508 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:32:43,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2024-11-14 04:32:43,548 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data/8c25c876e/47215d61a680421e93074087b051769c/FLAG779ae2d2c [2024-11-14 04:32:43,571 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data/8c25c876e/47215d61a680421e93074087b051769c [2024-11-14 04:32:43,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:32:43,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:32:43,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:43,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:32:43,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:32:43,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:43" (1/1) ... [2024-11-14 04:32:43,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d84192f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:43, skipping insertion in model container [2024-11-14 04:32:43,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:43" (1/1) ... [2024-11-14 04:32:43,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:32:44,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:44,602 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:32:44,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:44,831 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:32:44,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44 WrapperNode [2024-11-14 04:32:44,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:44,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:44,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:32:44,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:32:44,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,875 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2024-11-14 04:32:44,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:44,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:32:44,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:32:44,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:32:44,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:32:44,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:32:44,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:32:44,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:32:44,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (1/1) ... [2024-11-14 04:32:44,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:44,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:44,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:32:44,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:32:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-14 04:32:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-14 04:32:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:32:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:32:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:32:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:32:45,104 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:32:45,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:32:45,250 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-14 04:32:45,250 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:32:45,289 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:32:45,289 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:32:45,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:45 BoogieIcfgContainer [2024-11-14 04:32:45,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:32:45,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:32:45,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:32:45,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:32:45,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:32:43" (1/3) ... [2024-11-14 04:32:45,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ef3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:45, skipping insertion in model container [2024-11-14 04:32:45,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:44" (2/3) ... [2024-11-14 04:32:45,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ef3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:45, skipping insertion in model container [2024-11-14 04:32:45,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:45" (3/3) ... [2024-11-14 04:32:45,298 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2024-11-14 04:32:45,313 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:32:45,314 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_16_bad.i that has 2 procedures, 19 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 04:32:45,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:32:45,396 INFO L333 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, 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;@47aee784, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:32:45,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:32:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-11-14 04:32:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:32:45,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:45,411 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:45,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 04:32:45,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1855380540, now seen corresponding path program 1 times [2024-11-14 04:32:45,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:45,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636023602] [2024-11-14 04:32:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:45,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:32:45,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:45,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636023602] [2024-11-14 04:32:45,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636023602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:45,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:45,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:32:45,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462009890] [2024-11-14 04:32:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:45,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:32:45,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:32:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:32:45,664 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 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, 2 states have (on average 3.0) internal successors, (6), 2 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) [2024-11-14 04:32:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:45,694 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-14 04:32:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:32:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2024-11-14 04:32:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:45,705 INFO L225 Difference]: With dead ends: 30 [2024-11-14 04:32:45,705 INFO L226 Difference]: Without dead ends: 15 [2024-11-14 04:32:45,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:32:45,710 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:45,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:32:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-14 04:32:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-14 04:32:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-11-14 04:32:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-14 04:32:45,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2024-11-14 04:32:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:45,740 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-14 04:32:45,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2024-11-14 04:32:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-14 04:32:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 04:32:45,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:45,741 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:45,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:32:45,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 04:32:45,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:45,743 INFO L85 PathProgramCache]: Analyzing trace with hash -651315523, now seen corresponding path program 1 times [2024-11-14 04:32:45,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:45,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461088095] [2024-11-14 04:32:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:45,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:32:45,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:32:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:32:45,848 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 04:32:45,848 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:32:45,850 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-14 04:32:45,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-14 04:32:45,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:32:45,857 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-14 04:32:45,878 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:32:45,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:32:45 BoogieIcfgContainer [2024-11-14 04:32:45,881 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:32:45,882 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:32:45,882 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:32:45,882 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:32:45,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:45" (3/4) ... [2024-11-14 04:32:45,885 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 04:32:45,886 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:32:45,887 INFO L158 Benchmark]: Toolchain (without parser) took 2309.86ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 81.4MB in the end (delta: 34.5MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2024-11-14 04:32:45,887 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:45,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1253.76ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 57.4MB in the end (delta: 58.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-14 04:32:45,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.11ms. Allocated memory is still 142.6MB. Free memory was 57.2MB in the beginning and 54.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:45,888 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 142.6MB. Free memory was 54.8MB in the beginning and 53.7MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:32:45,888 INFO L158 Benchmark]: RCFGBuilder took 380.80ms. Allocated memory is still 142.6MB. Free memory was 53.7MB in the beginning and 108.4MB in the end (delta: -54.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-11-14 04:32:45,888 INFO L158 Benchmark]: TraceAbstraction took 589.63ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 81.4MB in the end (delta: 26.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-14 04:32:45,889 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 142.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:45,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1253.76ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 57.4MB in the end (delta: 58.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.11ms. Allocated memory is still 142.6MB. Free memory was 57.2MB in the beginning and 54.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 142.6MB. Free memory was 54.8MB in the beginning and 53.7MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 380.80ms. Allocated memory is still 142.6MB. Free memory was 53.7MB in the beginning and 108.4MB in the end (delta: -54.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 589.63ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 81.4MB in the end (delta: 26.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 142.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1579, overapproximation of fgets at line 1556. 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); [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1579] RET 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] [L1580] CALL CWE191_Integer_Underflow__int_fgets_sub_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1567] COND TRUE 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 17 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2024-11-14 04:32:45,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E --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 e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:32:48,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:32:48,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2024-11-14 04:32:48,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:32:48,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:32:48,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:32:48,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:32:48,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:32:48,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:32:48,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:32:48,662 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:32:48,662 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:32:48,663 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:32:48,663 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:32:48,663 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:32:48,663 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:32:48,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:32:48,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:32:48,664 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:32:48,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:32:48,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:32:48,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:32:48,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:32:48,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:32:48,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:32:48,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:48,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:32:48,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E 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 -> e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 [2024-11-14 04:32:48,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:32:49,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:32:49,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:32:49,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:32:49,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:32:49,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i Unable to find full path for "g++" [2024-11-14 04:32:50,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:32:51,461 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:32:51,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2024-11-14 04:32:51,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data/aa0aa4ff6/0d84e9a0689e4cc998fa565f9f85c51c/FLAGdc5dddd65 [2024-11-14 04:32:51,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/data/aa0aa4ff6/0d84e9a0689e4cc998fa565f9f85c51c [2024-11-14 04:32:51,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:32:51,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:32:51,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:51,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:32:51,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:32:51,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:51" (1/1) ... [2024-11-14 04:32:51,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512effe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:51, skipping insertion in model container [2024-11-14 04:32:51,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:51" (1/1) ... [2024-11-14 04:32:51,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:32:52,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:52,527 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:32:52,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:52,869 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:32:52,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52 WrapperNode [2024-11-14 04:32:52,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:52,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:52,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:32:52,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:32:52,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,922 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-14 04:32:52,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:52,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:32:52,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:32:52,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:32:52,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:32:52,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:32:52,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:32:52,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:32:52,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (1/1) ... [2024-11-14 04:32:52,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:52,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:52,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:32:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:32:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-14 04:32:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-14 04:32:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:32:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:32:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:32:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:32:53,154 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:32:53,156 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:32:53,282 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-14 04:32:53,283 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:32:53,293 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:32:53,293 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:32:53,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:53 BoogieIcfgContainer [2024-11-14 04:32:53,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:32:53,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:32:53,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:32:53,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:32:53,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:32:51" (1/3) ... [2024-11-14 04:32:53,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225560fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:53, skipping insertion in model container [2024-11-14 04:32:53,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:52" (2/3) ... [2024-11-14 04:32:53,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225560fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:53, skipping insertion in model container [2024-11-14 04:32:53,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:53" (3/3) ... [2024-11-14 04:32:53,303 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2024-11-14 04:32:53,319 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:32:53,320 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_16_bad.i that has 2 procedures, 25 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 04:32:53,382 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:32:53,398 INFO L333 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, 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;@737ee35c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:32:53,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:32:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 20 states have internal predecessors, (26), 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) [2024-11-14 04:32:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:32:53,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:53,411 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:53,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 04:32:53,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1037500657, now seen corresponding path program 1 times [2024-11-14 04:32:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:32:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268959395] [2024-11-14 04:32:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:53,434 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 [2024-11-14 04:32:53,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:32:53,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:32:53,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:32:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:53,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 04:32:53,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:32:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:32:53,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:32:53,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:32:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268959395] [2024-11-14 04:32:53,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268959395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:53,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:53,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:32:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82718888] [2024-11-14 04:32:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:53,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:32:53,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:32:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:32:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:32:53,635 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 20 states have internal predecessors, (26), 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, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-11-14 04:32:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:53,652 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-11-14 04:32:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:32:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2024-11-14 04:32:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:53,659 INFO L225 Difference]: With dead ends: 40 [2024-11-14 04:32:53,659 INFO L226 Difference]: Without dead ends: 16 [2024-11-14 04:32:53,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:32:53,667 INFO L432 NwaCegarLoop]: 27 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, 27 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 [2024-11-14 04:32:53,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:32:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-14 04:32:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-14 04:32:53,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:32:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-14 04:32:53,710 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2024-11-14 04:32:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:53,711 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-14 04:32:53,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-11-14 04:32:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-14 04:32:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:32:53,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:53,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:53,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-14 04:32:53,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:32:53,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 04:32:53,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -604357641, now seen corresponding path program 1 times [2024-11-14 04:32:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:32:53,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991838757] [2024-11-14 04:32:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:53,919 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 [2024-11-14 04:32:53,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:32:53,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:32:53,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:32:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:32:54,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:32:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:32:54,140 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 04:32:54,141 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:32:54,143 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-14 04:32:54,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-14 04:32:54,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-14 04:32:54,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:32:54,349 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-14 04:32:54,379 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:32:54,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:32:54 BoogieIcfgContainer [2024-11-14 04:32:54,386 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:32:54,387 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:32:54,388 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:32:54,388 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:32:54,389 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:53" (3/4) ... [2024-11-14 04:32:54,393 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 04:32:54,394 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:32:54,395 INFO L158 Benchmark]: Toolchain (without parser) took 2866.47ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 30.2MB in the end (delta: 26.7MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2024-11-14 04:32:54,395 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 83.9MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:54,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1339.38ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 51.8MB in the end (delta: 4.8MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2024-11-14 04:32:54,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.19ms. Allocated memory is still 83.9MB. Free memory was 51.8MB in the beginning and 49.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:54,397 INFO L158 Benchmark]: Boogie Preprocessor took 26.15ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 47.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:54,397 INFO L158 Benchmark]: RCFGBuilder took 344.53ms. Allocated memory is still 83.9MB. Free memory was 47.6MB in the beginning and 34.2MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:32:54,397 INFO L158 Benchmark]: TraceAbstraction took 1089.75ms. Allocated memory is still 83.9MB. Free memory was 33.4MB in the beginning and 30.6MB in the end (delta: 2.8MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2024-11-14 04:32:54,399 INFO L158 Benchmark]: Witness Printer took 6.45ms. Allocated memory is still 83.9MB. Free memory was 30.6MB in the beginning and 30.2MB in the end (delta: 415.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:32:54,401 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 83.9MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1339.38ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 51.8MB in the end (delta: 4.8MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.19ms. Allocated memory is still 83.9MB. Free memory was 51.8MB in the beginning and 49.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.15ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 47.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.53ms. Allocated memory is still 83.9MB. Free memory was 47.6MB in the beginning and 34.2MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1089.75ms. Allocated memory is still 83.9MB. Free memory was 33.4MB in the beginning and 30.6MB in the end (delta: 2.8MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 6.45ms. Allocated memory is still 83.9MB. Free memory was 30.6MB in the beginning and 30.2MB in the end (delta: 415.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1579, overapproximation of fgets at line 1556. 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] [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1579] RET 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] [L1580] CALL CWE191_Integer_Underflow__int_fgets_sub_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1567] COND TRUE 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, 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, 27 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, 27 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 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 [2024-11-14 04:32:54,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc291ddb-d1b0-442a-ad60-9d5a42f2e439/bin/utaipan-verify-sOmjnqqW8E/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