./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-hlist-fst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-hlist-fst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL --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 46375ed9ade4b2d65667cb37da90bf348054cd9152c2ac636867bc968395ff61 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:59:52,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:59:52,279 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2023-11-19 03:59:52,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:59:52,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:59:52,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:59:52,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:59:52,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:59:52,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:59:52,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:59:52,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:59:52,320 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 03:59:52,321 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 03:59:52,322 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 03:59:52,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:59:52,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:59:52,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:59:52,324 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:59:52,325 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:59:52,326 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:59:52,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:59:52,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:59:52,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:59:52,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:59:52,329 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:59:52,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:59:52,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46375ed9ade4b2d65667cb37da90bf348054cd9152c2ac636867bc968395ff61 [2023-11-19 03:59:52,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:59:52,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:59:52,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:59:52,744 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:59:52,745 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:59:52,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/memsafety-broom/linux-hlist-fst-data.i [2023-11-19 03:59:56,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:59:56,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:59:56,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/sv-benchmarks/c/memsafety-broom/linux-hlist-fst-data.i [2023-11-19 03:59:56,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/data/60d59ae37/a044d8e1ca7146c4b8c108244557c546/FLAGdc7ad12f3 [2023-11-19 03:59:56,470 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/data/60d59ae37/a044d8e1ca7146c4b8c108244557c546 [2023-11-19 03:59:56,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:59:56,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:59:56,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:59:56,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:59:56,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:59:56,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:59:56" (1/1) ... [2023-11-19 03:59:56,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff50340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:56, skipping insertion in model container [2023-11-19 03:59:56,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:59:56" (1/1) ... [2023-11-19 03:59:56,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:59:56,816 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:59:57,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:59:57,054 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:59:57,094 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:59:57,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:59:57,196 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:59:57,206 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:59:57,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57 WrapperNode [2023-11-19 03:59:57,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:59:57,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:59:57,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:59:57,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:59:57,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,316 INFO L138 Inliner]: procedures = 125, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 155 [2023-11-19 03:59:57,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:59:57,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:59:57,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:59:57,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:59:57,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:59:57,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:59:57,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:59:57,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:59:57,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:59:57" (1/1) ... [2023-11-19 03:59:57,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:59:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:59:57,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:59:57,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:59:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:59:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 03:59:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 03:59:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 03:59:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:59:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:59:57,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:59:57,691 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:59:57,694 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:59:58,281 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:59:58,414 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:59:58,414 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 03:59:58,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:59:58 BoogieIcfgContainer [2023-11-19 03:59:58,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:59:58,422 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:59:58,422 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:59:58,434 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:59:58,435 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:59:58" (1/1) ... [2023-11-19 03:59:58,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:59:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 83 states and 90 transitions. [2023-11-19 03:59:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2023-11-19 03:59:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 03:59:58,523 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:58,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:59:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:59:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 82 states and 89 transitions. [2023-11-19 03:59:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2023-11-19 03:59:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 03:59:58,867 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:58,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:59:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:59:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 81 states and 88 transitions. [2023-11-19 03:59:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2023-11-19 03:59:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 03:59:59,149 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:59:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:59:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 81 states and 87 transitions. [2023-11-19 03:59:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2023-11-19 03:59:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 03:59:59,195 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:59:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:59:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 80 states and 86 transitions. [2023-11-19 03:59:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2023-11-19 03:59:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 03:59:59,315 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:59:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:59:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 79 states and 85 transitions. [2023-11-19 03:59:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2023-11-19 03:59:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:59:59,661 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:59:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:59:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:59:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 83 states and 91 transitions. [2023-11-19 03:59:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2023-11-19 03:59:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:59:59,840 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:59:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:59:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 87 states and 97 transitions. [2023-11-19 04:00:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2023-11-19 04:00:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:00:00,504 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 86 states and 96 transitions. [2023-11-19 04:00:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2023-11-19 04:00:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:00:00,573 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 85 states and 95 transitions. [2023-11-19 04:00:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2023-11-19 04:00:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:00:00,999 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 84 states and 94 transitions. [2023-11-19 04:00:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2023-11-19 04:00:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:00:01,578 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:01,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 83 states and 93 transitions. [2023-11-19 04:00:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2023-11-19 04:00:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:00:02,208 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:02,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 85 states and 98 transitions. [2023-11-19 04:00:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2023-11-19 04:00:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:00:02,872 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:00:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:00:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 87 states and 103 transitions. [2023-11-19 04:00:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-11-19 04:00:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:00:04,072 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:04,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:00:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:04,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:00:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:04,221 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2023-11-19 04:00:04,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:00:04 ImpRootNode [2023-11-19 04:00:04,268 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:00:04,269 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:00:04,269 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:00:04,270 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:00:04,270 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:59:58" (3/4) ... [2023-11-19 04:00:04,271 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:00:04,331 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 04:00:04,331 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:00:04,332 INFO L158 Benchmark]: Toolchain (without parser) took 7850.55ms. Allocated memory was 138.4MB in the beginning and 237.0MB in the end (delta: 98.6MB). Free memory was 91.5MB in the beginning and 107.6MB in the end (delta: -16.1MB). Peak memory consumption was 82.8MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,333 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 138.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:00:04,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.85ms. Allocated memory is still 138.4MB. Free memory was 91.2MB in the beginning and 69.5MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.99ms. Allocated memory is still 138.4MB. Free memory was 69.5MB in the beginning and 67.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,335 INFO L158 Benchmark]: Boogie Preprocessor took 52.88ms. Allocated memory is still 138.4MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,336 INFO L158 Benchmark]: RCFGBuilder took 1048.82ms. Allocated memory was 138.4MB in the beginning and 197.1MB in the end (delta: 58.7MB). Free memory was 65.0MB in the beginning and 136.0MB in the end (delta: -71.0MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,337 INFO L158 Benchmark]: CodeCheck took 5846.81ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 136.0MB in the beginning and 109.7MB in the end (delta: 26.3MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,337 INFO L158 Benchmark]: Witness Printer took 62.02ms. Allocated memory is still 237.0MB. Free memory was 109.7MB in the beginning and 107.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:00:04,341 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, 83 locations, 45 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 249 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 740 IncrementalHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 249 mSolverCounterUnsat, 86 mSDtfsCounter, 740 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 536 GetRequests, 444 SyntacticMatches, 6 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2582] CALL, EXPR create() [L2553] struct hlist_head *head=malloc(sizeof(struct hlist_head)); [L2554] (head)->first = ((void *)0) VAL [head={-1:0}] [L2555] COND FALSE !(__VERIFIER_nondet_int()) [L2561] return head; [L2582] RET, EXPR create() [L2582] struct hlist_head *l = create(); [L2583] CALL loop(l) [L2565] struct my_item *now; VAL [head={-1:0}, head={-1:0}] [L2566] EXPR (head)->first [L2566] __typeof__((head)->first) ____ptr = ((head)->first); [L2566] EXPR ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0) [L2566] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2566] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2566] now = ({ __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); }) [L2566] COND TRUE \read(*now) [L2567] FCALL do_data(&(now->data)) [L2566] (now)->link.next * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 138.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.85ms. Allocated memory is still 138.4MB. Free memory was 91.2MB in the beginning and 69.5MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.99ms. Allocated memory is still 138.4MB. Free memory was 69.5MB in the beginning and 67.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.88ms. Allocated memory is still 138.4MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1048.82ms. Allocated memory was 138.4MB in the beginning and 197.1MB in the end (delta: 58.7MB). Free memory was 65.0MB in the beginning and 136.0MB in the end (delta: -71.0MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * CodeCheck took 5846.81ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 136.0MB in the beginning and 109.7MB in the end (delta: 26.3MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. * Witness Printer took 62.02ms. Allocated memory is still 237.0MB. Free memory was 109.7MB in the beginning and 107.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 04:00:04,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d20861b-df32-4d4b-ae57-fe8ecd4d39df/bin/ukojak-verify-G8NBE6pJGL/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)