./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcat.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcat.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 02cb0b7d003c65b862775c945403a999f88317049d254b45ea895999d5c859dc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-24 18:14:27,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 18:14:27,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2024-11-24 18:14:27,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 18:14:27,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-24 18:14:27,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 18:14:27,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 18:14:27,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 18:14:27,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 18:14:27,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 18:14:27,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 18:14:27,958 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 18:14:27,958 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 18:14:27,959 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 18:14:27,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 18:14:27,959 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 18:14:27,959 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 18:14:27,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 18:14:27,960 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-24 18:14:27,960 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-24 18:14:27,960 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-24 18:14:27,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 18:14:27,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-24 18:14:27,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 18:14:27,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 18:14:27,961 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-24 18:14:27,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 18:14:27,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak 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 -> 02cb0b7d003c65b862775c945403a999f88317049d254b45ea895999d5c859dc [2024-11-24 18:14:28,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 18:14:28,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 18:14:28,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 18:14:28,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 18:14:28,379 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 18:14:28,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/termination-dietlibc/strcat.i [2024-11-24 18:14:33,326 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/data/1ebf69420/d4a0edb5030f4bf0a4f3d3a448441c0f/FLAG9c4fce1cb [2024-11-24 18:14:34,015 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 18:14:34,017 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/sv-benchmarks/c/termination-dietlibc/strcat.i [2024-11-24 18:14:34,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/data/1ebf69420/d4a0edb5030f4bf0a4f3d3a448441c0f/FLAG9c4fce1cb [2024-11-24 18:14:34,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/data/1ebf69420/d4a0edb5030f4bf0a4f3d3a448441c0f [2024-11-24 18:14:34,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 18:14:34,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 18:14:34,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 18:14:34,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 18:14:34,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 18:14:34,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:14:34" (1/1) ... [2024-11-24 18:14:34,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2fddb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:34, skipping insertion in model container [2024-11-24 18:14:34,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:14:34" (1/1) ... [2024-11-24 18:14:34,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 18:14:34,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 18:14:34,917 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 18:14:35,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 18:14:35,073 INFO L204 MainTranslator]: Completed translation [2024-11-24 18:14:35,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35 WrapperNode [2024-11-24 18:14:35,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 18:14:35,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 18:14:35,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 18:14:35,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 18:14:35,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,159 INFO L138 Inliner]: procedures = 114, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 124 [2024-11-24 18:14:35,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 18:14:35,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 18:14:35,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 18:14:35,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 18:14:35,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,199 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 18:14:35,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 18:14:35,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 18:14:35,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 18:14:35,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:14:35" (1/1) ... [2024-11-24 18:14:35,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-24 18:14:35,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-24 18:14:35,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-24 18:14:35,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-24 18:14:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-24 18:14:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-24 18:14:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 18:14:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 18:14:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 18:14:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 18:14:35,589 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 18:14:35,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 18:14:36,285 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-11-24 18:14:36,285 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 18:14:36,392 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 18:14:36,392 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 18:14:36,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:14:36 BoogieIcfgContainer [2024-11-24 18:14:36,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 18:14:36,402 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-24 18:14:36,402 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-24 18:14:36,435 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-24 18:14:36,435 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:14:36" (1/1) ... [2024-11-24 18:14:36,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 18:14:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2024-11-24 18:14:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-24 18:14:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-24 18:14:36,539 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:36,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:14:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:14:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 50 states and 62 transitions. [2024-11-24 18:14:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-24 18:14:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-24 18:14:36,723 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:14:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:14:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 49 states and 61 transitions. [2024-11-24 18:14:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-11-24 18:14:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-24 18:14:36,911 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:36,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:14:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:14:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 48 states and 60 transitions. [2024-11-24 18:14:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-11-24 18:14:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-24 18:14:37,669 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:14:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:14:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 48 states and 59 transitions. [2024-11-24 18:14:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2024-11-24 18:14:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-24 18:14:38,396 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:14:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:14:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 48 states and 58 transitions. [2024-11-24 18:14:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-24 18:14:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-24 18:14:38,627 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:14:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:14:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:14:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 47 states and 57 transitions. [2024-11-24 18:14:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-24 18:14:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-24 18:14:38,988 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:14:38,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:14:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:14:39,047 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 18:14:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:14:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:14:39,186 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 18:14:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:14:39,229 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2024-11-24 18:14:39,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 06:14:39 ImpRootNode [2024-11-24 18:14:39,274 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-24 18:14:39,275 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 18:14:39,277 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 18:14:39,278 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 18:14:39,279 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:14:36" (3/4) ... [2024-11-24 18:14:39,281 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 18:14:39,344 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4. [2024-11-24 18:14:39,399 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-24 18:14:39,400 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-24 18:14:39,400 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 18:14:39,403 INFO L158 Benchmark]: Toolchain (without parser) took 5285.70ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 62.5MB in the end (delta: 54.0MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2024-11-24 18:14:39,406 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:14:39,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 953.77ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 99.6MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 18:14:39,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.29ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:14:39,407 INFO L158 Benchmark]: Boogie Preprocessor took 60.21ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 96.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:14:39,407 INFO L158 Benchmark]: RCFGBuilder took 1178.17ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 77.2MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 18:14:39,407 INFO L158 Benchmark]: CodeCheck took 2872.37ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 66.7MB in the end (delta: 10.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-24 18:14:39,409 INFO L158 Benchmark]: Witness Printer took 125.31ms. Allocated memory is still 142.6MB. Free memory was 66.7MB in the beginning and 62.5MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 18:14:39,411 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 49 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 184 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 18 mSDtfsCounter, 184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L525] int in_len = __VERIFIER_nondet_int(); [L526] COND FALSE !(in_len < 1) [L527] char* in = __builtin_alloca (in_len); VAL [in={2:0}, in_len=2] [L528] in[in_len-1]=0 [L529] int out_len = __VERIFIER_nondet_int(); [L530] COND FALSE !(out_len < 1) [L531] int out_end = __VERIFIER_nondet_int(); [L532] COND FALSE !(out_len < out_end+in_len) [L533] char* out = __builtin_alloca (out_len); VAL [in={2:0}, out={3:0}, out_end=-1] [L534] out[out_end]=0 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 953.77ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 99.6MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.29ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.21ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 96.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1178.17ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 77.2MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2872.37ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 66.7MB in the end (delta: 10.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Witness Printer took 125.31ms. Allocated memory is still 142.6MB. Free memory was 66.7MB in the beginning and 62.5MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-24 18:14:39,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06315a3-1e33-4a62-a225-a6b72393a93d/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)