./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC --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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:56:58,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:56:58,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-23 22:56:58,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:56:58,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:56:58,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:56:58,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:56:58,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:56:58,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:56:58,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:56:58,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:56:58,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:56:58,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:56:58,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:56:58,788 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:56:58,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:56:58,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:56:58,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:56:58,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:56:58,790 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:56:58,790 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:56:58,790 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:56:58,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:56:58,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:56:58,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:56:58,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:56:58,791 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:56:58,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:56:58,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:56:58,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:56:58,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:56:58,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:56:58,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:56:58,792 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:56:58,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:56:58,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:56:58,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:56:58,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:56:58,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:56:58,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:56:58,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:56:58,793 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_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC 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 -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2024-11-23 22:56:59,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:56:59,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:56:59,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:56:59,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:56:59,161 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:56:59,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2024-11-23 22:57:02,280 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/b154b32c5/1900e2a0d39342ddba77e37d37927cb9/FLAG3ed3f9c62 [2024-11-23 22:57:02,725 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:57:02,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2024-11-23 22:57:02,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/b154b32c5/1900e2a0d39342ddba77e37d37927cb9/FLAG3ed3f9c62 [2024-11-23 22:57:02,852 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/b154b32c5/1900e2a0d39342ddba77e37d37927cb9 [2024-11-23 22:57:02,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:57:02,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:57:02,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:02,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:57:02,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:57:02,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:02" (1/1) ... [2024-11-23 22:57:02,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5378d574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:02, skipping insertion in model container [2024-11-23 22:57:02,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:02" (1/1) ... [2024-11-23 22:57:02,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:57:03,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:03,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:57:03,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:04,016 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:57:04,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04 WrapperNode [2024-11-23 22:57:04,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:04,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:04,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:57:04,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:57:04,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,090 INFO L138 Inliner]: procedures = 499, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2024-11-23 22:57:04,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:04,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:57:04,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:57:04,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:57:04,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,136 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [1, 3]. 75 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 22:57:04,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,149 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:57:04,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:57:04,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:57:04,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:57:04,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (1/1) ... [2024-11-23 22:57:04,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:04,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:57:04,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:57:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:57:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 22:57:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 22:57:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:57:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:57:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:57:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:57:04,410 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:57:04,411 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:57:04,585 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-23 22:57:04,585 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:57:04,599 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:57:04,599 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 22:57:04,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:04 BoogieIcfgContainer [2024-11-23 22:57:04,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:57:04,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:57:04,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:57:04,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:57:04,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:57:02" (1/3) ... [2024-11-23 22:57:04,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dedb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:04, skipping insertion in model container [2024-11-23 22:57:04,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:04" (2/3) ... [2024-11-23 22:57:04,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dedb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:04, skipping insertion in model container [2024-11-23 22:57:04,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:04" (3/3) ... [2024-11-23 22:57:04,614 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2024-11-23 22:57:04,631 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:57:04,633 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 22:57:04,689 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:57:04,700 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;@dd064f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:57:04,700 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 22:57:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 22:57:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-23 22:57:04,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:04,714 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:57:04,714 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 22:57:04,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2024-11-23 22:57:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:04,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024326319] [2024-11-23 22:57:04,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:57:04,882 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:57:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:57:04,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:57:04,954 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:57:04,956 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 22:57:04,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 22:57:04,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:57:04,965 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-23 22:57:04,992 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 22:57:04,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:57:04 BoogieIcfgContainer [2024-11-23 22:57:04,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 22:57:04,999 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 22:57:04,999 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 22:57:04,999 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 22:57:05,000 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:04" (3/4) ... [2024-11-23 22:57:05,003 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 22:57:05,004 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 22:57:05,005 INFO L158 Benchmark]: Toolchain (without parser) took 2148.92ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 67.3MB in the end (delta: 48.0MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2024-11-23 22:57:05,005 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:05,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1160.52ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 105.5MB in the end (delta: 9.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-11-23 22:57:05,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.42ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 102.6MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 22:57:05,006 INFO L158 Benchmark]: Boogie Preprocessor took 71.71ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 100.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:05,007 INFO L158 Benchmark]: RCFGBuilder took 436.03ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 87.6MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:57:05,007 INFO L158 Benchmark]: TraceAbstraction took 395.39ms. Allocated memory is still 142.6MB. Free memory was 87.0MB in the beginning and 67.9MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:57:05,007 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 142.6MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:05,009 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1160.52ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 105.5MB in the end (delta: 9.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.42ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 102.6MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.71ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 100.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 436.03ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 87.6MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 395.39ms. Allocated memory is still 142.6MB. Free memory was 87.0MB in the beginning and 67.9MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 142.6MB. Free memory is still 67.3MB. 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={14:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-23 22:57:05,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC --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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:57:07,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:57:07,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-23 22:57:07,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:57:07,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:57:07,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-23 22:57:07,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:57:07,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:57:07,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:57:07,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:57:07,818 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:57:07,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:57:07,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:57:07,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:57:07,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:57:07,819 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:57:07,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:57:07,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:57:07,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:57:07,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 22:57:07,820 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:57:07,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:57:07,821 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:57:07,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:57:07,821 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:57:07,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:57:07,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:57:07,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:57:07,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:07,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:57:07,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:57:07,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:57:07,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:57:07,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:07,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:57:07,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:57:07,824 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_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC 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 -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2024-11-23 22:57:08,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:57:08,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:57:08,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:57:08,164 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:57:08,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:57:08,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2024-11-23 22:57:11,109 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/fd21a6da2/dbb434d39b8743439180372372c227c3/FLAG19b92ee27 [2024-11-23 22:57:11,669 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:57:11,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2024-11-23 22:57:11,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/fd21a6da2/dbb434d39b8743439180372372c227c3/FLAG19b92ee27 [2024-11-23 22:57:11,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/data/fd21a6da2/dbb434d39b8743439180372372c227c3 [2024-11-23 22:57:11,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:57:11,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:57:11,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:11,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:57:11,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:57:11,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:11" (1/1) ... [2024-11-23 22:57:11,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2a3d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:11, skipping insertion in model container [2024-11-23 22:57:11,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:11" (1/1) ... [2024-11-23 22:57:11,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:57:12,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:12,858 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:57:12,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:13,137 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:57:13,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13 WrapperNode [2024-11-23 22:57:13,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:13,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:13,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:57:13,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:57:13,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,215 INFO L138 Inliner]: procedures = 504, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2024-11-23 22:57:13,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:13,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:57:13,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:57:13,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:57:13,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,242 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [1, 3]. 75 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 22:57:13,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,259 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:57:13,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:57:13,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:57:13,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:57:13,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (1/1) ... [2024-11-23 22:57:13,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:57:13,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:57:13,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:57:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 22:57:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 22:57:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:57:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:57:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:57:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-23 22:57:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-23 22:57:13,557 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:57:13,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:57:13,766 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-23 22:57:13,769 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:57:13,780 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:57:13,780 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 22:57:13,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:13 BoogieIcfgContainer [2024-11-23 22:57:13,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:57:13,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:57:13,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:57:13,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:57:13,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:57:11" (1/3) ... [2024-11-23 22:57:13,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654df348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:13, skipping insertion in model container [2024-11-23 22:57:13,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:13" (2/3) ... [2024-11-23 22:57:13,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654df348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:13, skipping insertion in model container [2024-11-23 22:57:13,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:13" (3/3) ... [2024-11-23 22:57:13,795 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2024-11-23 22:57:13,807 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:57:13,809 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 22:57:13,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:57:13,873 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;@1e3d4c0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:57:13,874 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 22:57:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 22:57:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-23 22:57:13,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:13,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:57:13,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 22:57:13,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2024-11-23 22:57:13,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 22:57:13,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557811215] [2024-11-23 22:57:13,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:13,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:57:13,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:57:13,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:57:13,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:57:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:57:14,169 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:57:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:57:14,296 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-23 22:57:14,298 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:57:14,302 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 22:57:14,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 22:57:14,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:57:14,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:57:14,511 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-23 22:57:14,546 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 22:57:14,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:57:14 BoogieIcfgContainer [2024-11-23 22:57:14,550 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 22:57:14,551 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 22:57:14,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 22:57:14,551 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 22:57:14,551 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:13" (3/4) ... [2024-11-23 22:57:14,555 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 22:57:14,556 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 22:57:14,557 INFO L158 Benchmark]: Toolchain (without parser) took 2822.83ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 89.1MB in the beginning and 202.5MB in the end (delta: -113.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2024-11-23 22:57:14,557 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:14,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1402.88ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 66.8MB in the end (delta: 22.3MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2024-11-23 22:57:14,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.98ms. Allocated memory is still 117.4MB. Free memory was 66.8MB in the beginning and 64.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:14,559 INFO L158 Benchmark]: Boogie Preprocessor took 57.88ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 61.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:14,560 INFO L158 Benchmark]: RCFGBuilder took 502.82ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 47.0MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:57:14,560 INFO L158 Benchmark]: TraceAbstraction took 766.53ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 46.5MB in the beginning and 202.5MB in the end (delta: -156.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:14,560 INFO L158 Benchmark]: Witness Printer took 5.36ms. Allocated memory is still 243.3MB. Free memory was 202.5MB in the beginning and 202.5MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:57:14,564 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 117.4MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1402.88ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 66.8MB in the end (delta: 22.3MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.98ms. Allocated memory is still 117.4MB. Free memory was 66.8MB in the beginning and 64.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.88ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 61.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 502.82ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 47.0MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 766.53ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 46.5MB in the beginning and 202.5MB in the end (delta: -156.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.36ms. Allocated memory is still 243.3MB. Free memory was 202.5MB in the beginning and 202.5MB in the end (delta: 27.7kB). 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-23 22:57:14,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b5b5e46-e10e-4d53-880b-b0a46a47d3fd/bin/uautomizer-verify-LYvppIcaGC/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