./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:23:12,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:23:13,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-12-02 13:23:13,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:23:13,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:23:13,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:23:13,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:23:13,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:23:13,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:23:13,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:23:13,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:23:13,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:23:13,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:23:13,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:23:13,046 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:23:13,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:23:13,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:23:13,048 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:23:13,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:23:13,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:23:13,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:23:13,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:23:13,050 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea [2024-12-02 13:23:13,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:23:13,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:23:13,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:23:13,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:23:13,348 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:23:13,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2024-12-02 13:23:16,770 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/faf7ba0ce/e47a5768174a445ba05d37277c9b019e/FLAG9cac33b5d [2024-12-02 13:23:17,098 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:23:17,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2024-12-02 13:23:17,122 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/faf7ba0ce/e47a5768174a445ba05d37277c9b019e/FLAG9cac33b5d [2024-12-02 13:23:17,140 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/faf7ba0ce/e47a5768174a445ba05d37277c9b019e [2024-12-02 13:23:17,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:23:17,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:23:17,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:23:17,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:23:17,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:23:17,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:23:17" (1/1) ... [2024-12-02 13:23:17,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abf0b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:17, skipping insertion in model container [2024-12-02 13:23:17,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:23:17" (1/1) ... [2024-12-02 13:23:17,202 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:23:18,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:23:18,092 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:23:18,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:23:18,298 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:23:18,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18 WrapperNode [2024-12-02 13:23:18,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:23:18,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:23:18,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:23:18,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:23:18,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,347 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-12-02 13:23:18,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:23:18,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:23:18,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:23:18,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:23:18,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,371 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-12-02 13:23:18,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,377 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,378 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:23:18,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:23:18,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:23:18,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:23:18,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (1/1) ... [2024-12-02 13:23:18,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:23:18,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:23:18,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:23:18,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:23:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 13:23:18,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 13:23:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:23:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:23:18,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:23:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:23:18,604 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:23:18,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:23:18,731 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 13:23:18,731 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:23:18,742 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:23:18,742 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 13:23:18,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:23:18 BoogieIcfgContainer [2024-12-02 13:23:18,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:23:18,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:23:18,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:23:18,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:23:18,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:23:17" (1/3) ... [2024-12-02 13:23:18,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a489d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:23:18, skipping insertion in model container [2024-12-02 13:23:18,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:18" (2/3) ... [2024-12-02 13:23:18,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a489d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:23:18, skipping insertion in model container [2024-12-02 13:23:18,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:23:18" (3/3) ... [2024-12-02 13:23:18,754 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2024-12-02 13:23:18,773 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:23:18,775 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-02 13:23:18,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:23:18,854 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=PETRI_NET, 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;@29765a32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:23:18,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 13:23:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2024-12-02 13:23:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 13:23:18,867 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:23:18,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:23:18,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-02 13:23:18,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:23:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2024-12-02 13:23:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:23:18,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846043480] [2024-12-02 13:23:18,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:23:18,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:23:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:23:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:23:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:23:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846043480] [2024-12-02 13:23:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846043480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:23:19,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:23:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:23:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873512214] [2024-12-02 13:23:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:23:19,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:23:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:23:19,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:23:19,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:23:19,141 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-12-02 13:23:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:23:19,174 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-12-02 13:23:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:23:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2024-12-02 13:23:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:23:19,184 INFO L225 Difference]: With dead ends: 40 [2024-12-02 13:23:19,184 INFO L226 Difference]: Without dead ends: 17 [2024-12-02 13:23:19,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:23:19,191 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:23:19,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:23:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-12-02 13:23:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-12-02 13:23:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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) [2024-12-02 13:23:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-12-02 13:23:19,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2024-12-02 13:23:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:23:19,232 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-12-02 13:23:19,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-12-02 13:23:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-12-02 13:23:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 13:23:19,233 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:23:19,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:23:19,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:23:19,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-02 13:23:19,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:23:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2024-12-02 13:23:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:23:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867971265] [2024-12-02 13:23:19,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:23:19,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:23:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 13:23:19,288 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 13:23:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 13:23:19,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 13:23:19,328 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 13:23:19,330 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-12-02 13:23:19,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-12-02 13:23:19,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:23:19,336 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 13:23:19,359 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 13:23:19,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:23:19 BoogieIcfgContainer [2024-12-02 13:23:19,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 13:23:19,364 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 13:23:19,364 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 13:23:19,364 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 13:23:19,365 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:23:18" (3/4) ... [2024-12-02 13:23:19,367 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 13:23:19,368 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 13:23:19,370 INFO L158 Benchmark]: Toolchain (without parser) took 2224.65ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 34.3MB in the end (delta: 54.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-12-02 13:23:19,370 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:19,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1153.28ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 79.6MB in the end (delta: 9.5MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-12-02 13:23:19,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.35ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.3MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:19,371 INFO L158 Benchmark]: Boogie Preprocessor took 36.43ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 75.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:19,372 INFO L158 Benchmark]: RCFGBuilder took 357.37ms. Allocated memory is still 117.4MB. Free memory was 75.5MB in the beginning and 63.4MB in the end (delta: 12.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:23:19,372 INFO L158 Benchmark]: TraceAbstraction took 617.79ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 34.3MB in the end (delta: 28.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 13:23:19,372 INFO L158 Benchmark]: Witness Printer took 4.93ms. Allocated memory is still 117.4MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:19,374 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1153.28ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 79.6MB in the end (delta: 9.5MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.35ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.3MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.43ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 75.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 357.37ms. Allocated memory is still 117.4MB. Free memory was 75.5MB in the beginning and 63.4MB in the end (delta: 12.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 617.79ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 34.3MB in the end (delta: 28.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.93ms. Allocated memory is still 117.4MB. Free memory is still 34.3MB. 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 1559, overapproximation of fgets at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, 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, STATIC_CONST_FIVE=5, \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, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_predec_06_bad() [L1551] int data; [L1552] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1567] COND TRUE STATIC_CONST_FIVE==5 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, 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, 24 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, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 13:23:19,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:23:21,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:23:21,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-12-02 13:23:21,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:23:21,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:23:21,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-12-02 13:23:22,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:23:22,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:23:22,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:23:22,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:23:22,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:23:22,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:23:22,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:23:22,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:23:22,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:23:22,023 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:23:22,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:23:22,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:23:22,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:23:22,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:23:22,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:23:22,024 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:23:22,025 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:23:22,025 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:23:22,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:23:22,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:23:22,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:23:22,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:23:22,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:23:22,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:23:22,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:23:22,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:23:22,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:23:22,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:23:22,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:23:22,026 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:23:22,027 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea [2024-12-02 13:23:22,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:23:22,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:23:22,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:23:22,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:23:22,333 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:23:22,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2024-12-02 13:23:25,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/d2426745e/9edb8501ed5141f78402cbd4e846d0ad/FLAG85f34db56 [2024-12-02 13:23:25,608 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:23:25,609 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2024-12-02 13:23:25,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/d2426745e/9edb8501ed5141f78402cbd4e846d0ad/FLAG85f34db56 [2024-12-02 13:23:25,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/data/d2426745e/9edb8501ed5141f78402cbd4e846d0ad [2024-12-02 13:23:25,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:23:25,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:23:25,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:23:25,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:23:25,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:23:25,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:23:25" (1/1) ... [2024-12-02 13:23:25,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e154ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:25, skipping insertion in model container [2024-12-02 13:23:25,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:23:25" (1/1) ... [2024-12-02 13:23:25,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:23:26,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:23:26,625 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:23:26,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:23:26,895 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:23:26,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26 WrapperNode [2024-12-02 13:23:26,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:23:26,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:23:26,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:23:26,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:23:26,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,949 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-12-02 13:23:26,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:23:26,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:23:26,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:23:26,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:23:26,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,979 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-12-02 13:23:26,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,989 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:26,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:23:27,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:23:27,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:23:27,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:23:27,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (1/1) ... [2024-12-02 13:23:27,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:23:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:23:27,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:23:27,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:23:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 13:23:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 13:23:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 13:23:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:23:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:23:27,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:23:27,217 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:23:27,219 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:23:27,372 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-12-02 13:23:27,372 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:23:27,383 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:23:27,383 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 13:23:27,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:23:27 BoogieIcfgContainer [2024-12-02 13:23:27,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:23:27,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:23:27,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:23:27,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:23:27,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:23:25" (1/3) ... [2024-12-02 13:23:27,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4920fe64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:23:27, skipping insertion in model container [2024-12-02 13:23:27,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:23:26" (2/3) ... [2024-12-02 13:23:27,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4920fe64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:23:27, skipping insertion in model container [2024-12-02 13:23:27,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:23:27" (3/3) ... [2024-12-02 13:23:27,396 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2024-12-02 13:23:27,415 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:23:27,417 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-02 13:23:27,480 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:23:27,495 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=PETRI_NET, 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;@628b2660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:23:27,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 13:23:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2024-12-02 13:23:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 13:23:27,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:23:27,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:23:27,509 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-02 13:23:27,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:23:27,515 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2024-12-02 13:23:27,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:23:27,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996687625] [2024-12-02 13:23:27,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:23:27,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:23:27,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:23:27,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:23:27,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:23:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:23:27,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:23:27,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:23:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:23:27,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:23:27,742 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:23:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996687625] [2024-12-02 13:23:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996687625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:23:27,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:23:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:23:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895131243] [2024-12-02 13:23:27,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:23:27,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:23:27,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:23:27,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:23:27,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:23:27,777 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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, 3 states have (on average 3.0) 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) [2024-12-02 13:23:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:23:27,812 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2024-12-02 13:23:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:23:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 [2024-12-02 13:23:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:23:27,822 INFO L225 Difference]: With dead ends: 39 [2024-12-02 13:23:27,823 INFO L226 Difference]: Without dead ends: 15 [2024-12-02 13:23:27,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:23:27,829 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:23:27,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:23:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-12-02 13:23:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-12-02 13:23:27,865 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) [2024-12-02 13:23:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-12-02 13:23:27,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-12-02 13:23:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:23:27,872 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-12-02 13:23:27,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2024-12-02 13:23:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-12-02 13:23:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 13:23:27,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:23:27,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:23:27,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:23:28,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:23:28,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-02 13:23:28,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:23:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2024-12-02 13:23:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:23:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132425451] [2024-12-02 13:23:28,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:23:28,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:23:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:23:28,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:23:28,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:23:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 13:23:28,200 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 13:23:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 13:23:28,246 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 13:23:28,246 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 13:23:28,248 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-12-02 13:23:28,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-12-02 13:23:28,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 13:23:28,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:23:28,456 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 13:23:28,488 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 13:23:28,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:23:28 BoogieIcfgContainer [2024-12-02 13:23:28,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 13:23:28,493 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 13:23:28,493 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 13:23:28,493 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 13:23:28,494 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:23:27" (3/4) ... [2024-12-02 13:23:28,497 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 13:23:28,498 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 13:23:28,499 INFO L158 Benchmark]: Toolchain (without parser) took 2846.33ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 66.0MB in the beginning and 102.7MB in the end (delta: -36.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2024-12-02 13:23:28,500 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:28,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1242.51ms. Allocated memory is still 92.3MB. Free memory was 65.8MB in the beginning and 62.2MB in the end (delta: 3.6MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2024-12-02 13:23:28,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.23ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 59.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:28,501 INFO L158 Benchmark]: Boogie Preprocessor took 49.47ms. Allocated memory is still 92.3MB. Free memory was 59.6MB in the beginning and 57.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:28,501 INFO L158 Benchmark]: RCFGBuilder took 383.29ms. Allocated memory is still 92.3MB. Free memory was 57.4MB in the beginning and 43.6MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:23:28,502 INFO L158 Benchmark]: TraceAbstraction took 1105.66ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 43.2MB in the beginning and 102.7MB in the end (delta: -59.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:28,502 INFO L158 Benchmark]: Witness Printer took 5.42ms. Allocated memory is still 151.0MB. Free memory was 102.7MB in the beginning and 102.7MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:23:28,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1242.51ms. Allocated memory is still 92.3MB. Free memory was 65.8MB in the beginning and 62.2MB in the end (delta: 3.6MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.23ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 59.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.47ms. Allocated memory is still 92.3MB. Free memory was 59.6MB in the beginning and 57.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 383.29ms. Allocated memory is still 92.3MB. Free memory was 57.4MB in the beginning and 43.6MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1105.66ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 43.2MB in the beginning and 102.7MB in the end (delta: -59.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.42ms. Allocated memory is still 151.0MB. Free memory was 102.7MB in the beginning and 102.7MB in the end (delta: 18.4kB). 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 1559, overapproximation of fgets at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, 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, STATIC_CONST_FIVE=5, \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, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_predec_06_bad() [L1551] int data; [L1552] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1567] COND TRUE STATIC_CONST_FIVE==5 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, 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, 24 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, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 2 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 13:23:28,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b951340f-c087-47e8-bb89-d3fa2fcff081/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample