./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi --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 5c4e150ef364d23aeab0a373d461c06d560c0fa17d69d62b5545e1af197924d4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:01:19,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:01:19,403 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2023-11-24 23:01:19,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:01:19,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:01:19,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:01:19,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:01:19,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:01:19,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:01:19,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:01:19,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:01:19,480 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:01:19,481 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:01:19,483 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:01:19,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:01:19,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:01:19,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:01:19,485 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:01:19,485 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:01:19,486 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:01:19,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:01:19,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:01:19,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:01:19,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:01:19,489 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:01:19,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:01:19,490 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_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c4e150ef364d23aeab0a373d461c06d560c0fa17d69d62b5545e1af197924d4 [2023-11-24 23:01:19,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:01:19,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:01:19,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:01:19,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:01:19,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:01:19,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i [2023-11-24 23:01:23,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:01:23,470 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:01:23,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/sv-benchmarks/c/memsafety-broom/linux-hlist-middle-data.i [2023-11-24 23:01:23,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/data/9eb19ef97/a3385ab13ace4b0286e696e9c1d29b4a/FLAG447e837b7 [2023-11-24 23:01:23,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/data/9eb19ef97/a3385ab13ace4b0286e696e9c1d29b4a [2023-11-24 23:01:23,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:01:23,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:01:23,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:01:23,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:01:23,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:01:23,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:01:23" (1/1) ... [2023-11-24 23:01:23,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bb9135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:23, skipping insertion in model container [2023-11-24 23:01:23,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:01:23" (1/1) ... [2023-11-24 23:01:23,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:01:24,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:01:24,015 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:01:24,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:01:24,120 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:01:24,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24 WrapperNode [2023-11-24 23:01:24,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:01:24,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:01:24,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:01:24,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:01:24,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,191 INFO L138 Inliner]: procedures = 124, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 160 [2023-11-24 23:01:24,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:01:24,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:01:24,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:01:24,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:01:24,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:01:24,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:01:24,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:01:24,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:01:24,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:24" (1/1) ... [2023-11-24 23:01:24,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:01:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:01:24,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:01:24,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:01:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:01:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:01:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:01:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:01:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:01:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:01:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:01:24,528 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:01:24,531 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:01:24,957 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:01:25,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:01:25,133 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:01:25,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:01:25 BoogieIcfgContainer [2023-11-24 23:01:25,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:01:25,138 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:01:25,138 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:01:25,150 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:01:25,151 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:01:25" (1/1) ... [2023-11-24 23:01:25,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:01:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 86 states and 93 transitions. [2023-11-24 23:01:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2023-11-24 23:01:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:01:25,228 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 85 states and 92 transitions. [2023-11-24 23:01:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-11-24 23:01:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:01:25,534 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 84 states and 91 transitions. [2023-11-24 23:01:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2023-11-24 23:01:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:01:25,749 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 84 states and 90 transitions. [2023-11-24 23:01:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2023-11-24 23:01:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:01:25,788 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:25,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 83 states and 89 transitions. [2023-11-24 23:01:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2023-11-24 23:01:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:01:25,976 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 82 states and 88 transitions. [2023-11-24 23:01:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2023-11-24 23:01:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:01:26,271 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 86 states and 95 transitions. [2023-11-24 23:01:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2023-11-24 23:01:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:01:26,668 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:26,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 90 states and 100 transitions. [2023-11-24 23:01:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2023-11-24 23:01:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:01:26,959 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 89 states and 99 transitions. [2023-11-24 23:01:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2023-11-24 23:01:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:01:27,001 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 88 states and 98 transitions. [2023-11-24 23:01:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2023-11-24 23:01:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:01:27,420 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:27,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 87 states and 97 transitions. [2023-11-24 23:01:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2023-11-24 23:01:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:01:28,140 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:28,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 86 states and 96 transitions. [2023-11-24 23:01:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2023-11-24 23:01:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:01:28,986 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:28,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:28,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:01:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:29,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:01:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:29,121 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2023-11-24 23:01:29,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:01:29 ImpRootNode [2023-11-24 23:01:29,163 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:01:29,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:01:29,163 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:01:29,164 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:01:29,164 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:01:25" (3/4) ... [2023-11-24 23:01:29,165 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:01:29,204 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 23:01:29,204 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:01:29,205 INFO L158 Benchmark]: Toolchain (without parser) took 5660.55ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 136.1MB in the beginning and 148.4MB in the end (delta: -12.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-11-24 23:01:29,205 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 130.0MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:01:29,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.86ms. Allocated memory is still 167.8MB. Free memory was 135.7MB in the beginning and 113.9MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 23:01:29,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.74ms. Allocated memory is still 167.8MB. Free memory was 113.9MB in the beginning and 111.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:01:29,207 INFO L158 Benchmark]: Boogie Preprocessor took 50.20ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:01:29,207 INFO L158 Benchmark]: RCFGBuilder took 889.35ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 99.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:01:29,208 INFO L158 Benchmark]: CodeCheck took 4025.17ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 98.7MB in the beginning and 150.3MB in the end (delta: -51.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:01:29,208 INFO L158 Benchmark]: Witness Printer took 40.92ms. Allocated memory is still 201.3MB. Free memory was 150.3MB in the beginning and 148.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:01:29,211 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, 86 locations, 47 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 211 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 68 mSDtfsCounter, 461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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: [L2586] CALL, EXPR create() [L2556] struct hlist_head *head=malloc(sizeof(struct hlist_head)); [L2557] (head)->first = ((void *)0) VAL [head={-1:0}] [L2558] COND FALSE !(__VERIFIER_nondet_int()) [L2565] return head; [L2586] RET, EXPR create() [L2586] struct hlist_head *l = create(); [L2588] CALL loop(l) [L2569] struct my_item *now; VAL [head={-1:0}, head={-1:0}] [L2570] EXPR (head)->first [L2570] __typeof__((head)->first) ____ptr = ((head)->first); [L2570] EXPR ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0) [L2570] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2570] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2570] now = ({ __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); }) [L2570] COND TRUE \read(*now) [L2571] FCALL do_data(&(now->data1), &(now->data2)) [L2570] (now)->link.next * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 130.0MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.86ms. Allocated memory is still 167.8MB. Free memory was 135.7MB in the beginning and 113.9MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.74ms. Allocated memory is still 167.8MB. Free memory was 113.9MB in the beginning and 111.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.20ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 889.35ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 99.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4025.17ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 98.7MB in the beginning and 150.3MB in the end (delta: -51.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.92ms. Allocated memory is still 201.3MB. Free memory was 150.3MB in the beginning and 148.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-24 23:01:29,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d95174d6-9448-4276-85ad-814c4cb8a95f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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)