./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-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_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/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_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/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_b0e2dff0-5bc9-45f8-be95-89fecab4454f/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 ebb37748f1af061b5b278b01f310343488b6843bc6e1087491ba7e919a271a52 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:06:56,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:06:56,737 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2023-11-24 23:06:56,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:06:56,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:06:56,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:06:56,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:06:56,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:06:56,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:06:56,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:06:56,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:06:56,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:06:56,793 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:06:56,795 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:06:56,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:06:56,796 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:06:56,796 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:06:56,797 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:06:56,797 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:06:56,798 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:06:56,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:06:56,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:06:56,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:06:56,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:06:56,803 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:06:56,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:06:56,804 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_b0e2dff0-5bc9-45f8-be95-89fecab4454f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebb37748f1af061b5b278b01f310343488b6843bc6e1087491ba7e919a271a52 [2023-11-24 23:06:57,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:06:57,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:06:57,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:06:57,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:06:57,157 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:06:57,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i [2023-11-24 23:07:00,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:07:00,683 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:07:00,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i [2023-11-24 23:07:00,717 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/data/820448140/36dbb12cbb294abd99acc43f644724a3/FLAG50fc12c87 [2023-11-24 23:07:00,735 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/data/820448140/36dbb12cbb294abd99acc43f644724a3 [2023-11-24 23:07:00,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:07:00,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:07:00,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:07:00,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:07:00,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:07:00,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:07:00" (1/1) ... [2023-11-24 23:07:00,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e138ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:00, skipping insertion in model container [2023-11-24 23:07:00,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:07:00" (1/1) ... [2023-11-24 23:07:00,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:07:01,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:07:01,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:07:01,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:07:01,450 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:07:01,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01 WrapperNode [2023-11-24 23:07:01,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:07:01,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:07:01,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:07:01,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:07:01,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,543 INFO L138 Inliner]: procedures = 124, calls = 33, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 155 [2023-11-24 23:07:01,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:07:01,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:07:01,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:07:01,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:07:01,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:07:01,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:07:01,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:07:01,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:07:01,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:07:01" (1/1) ... [2023-11-24 23:07:01,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:07:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:07:01,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:07:01,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:07:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:07:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:07:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:07:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:07:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:07:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:07:01,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:07:01,867 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:07:01,870 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:07:02,417 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:07:02,525 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:07:02,525 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:07:02,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:07:02 BoogieIcfgContainer [2023-11-24 23:07:02,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:07:02,529 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:07:02,529 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:07:02,542 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:07:02,542 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:07:02" (1/1) ... [2023-11-24 23:07:02,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:07:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 83 states and 90 transitions. [2023-11-24 23:07:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2023-11-24 23:07:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:07:02,628 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:02,843 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 23:07:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 82 states and 89 transitions. [2023-11-24 23:07:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2023-11-24 23:07:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:07:02,882 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,027 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 23:07:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 81 states and 88 transitions. [2023-11-24 23:07:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2023-11-24 23:07:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:07:03,140 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:07:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 81 states and 87 transitions. [2023-11-24 23:07:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2023-11-24 23:07:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:07:03,210 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,341 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 23:07:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 80 states and 86 transitions. [2023-11-24 23:07:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2023-11-24 23:07:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:07:03,395 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,509 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 23:07:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 79 states and 85 transitions. [2023-11-24 23:07:03,639 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2023-11-24 23:07:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:07:03,640 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,719 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 23:07:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 83 states and 91 transitions. [2023-11-24 23:07:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2023-11-24 23:07:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:07:03,776 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,894 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 23:07:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 87 states and 97 transitions. [2023-11-24 23:07:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2023-11-24 23:07:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:07:04,076 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:04,102 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 23:07:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 86 states and 96 transitions. [2023-11-24 23:07:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2023-11-24 23:07:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:07:04,120 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:04,328 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 23:07:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 85 states and 95 transitions. [2023-11-24 23:07:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2023-11-24 23:07:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:07:04,788 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:05,010 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 23:07:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 84 states and 94 transitions. [2023-11-24 23:07:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2023-11-24 23:07:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:07:05,582 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:05,756 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 23:07:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 83 states and 93 transitions. [2023-11-24 23:07:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2023-11-24 23:07:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:07:06,543 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:06,674 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 23:07:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 85 states and 98 transitions. [2023-11-24 23:07:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2023-11-24 23:07:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:07:06,988 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:06,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:07,305 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 23:07:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 87 states and 103 transitions. [2023-11-24 23:07:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-11-24 23:07:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:07:08,140 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:08,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:08,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:07:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:08,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:07:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:07:08,287 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2023-11-24 23:07:08,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:07:08 ImpRootNode [2023-11-24 23:07:08,312 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:07:08,313 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:07:08,313 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:07:08,314 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:07:08,314 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:07:02" (3/4) ... [2023-11-24 23:07:08,315 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:07:08,356 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 23:07:08,357 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:07:08,358 INFO L158 Benchmark]: Toolchain (without parser) took 7617.79ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 116.0MB in the beginning and 141.9MB in the end (delta: -25.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-11-24 23:07:08,358 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 148.9MB. Free memory was 121.8MB in the beginning and 121.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:07:08,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.92ms. Allocated memory is still 148.9MB. Free memory was 116.0MB in the beginning and 112.2MB in the end (delta: 3.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:07:08,360 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.34ms. Allocated memory is still 148.9MB. Free memory was 112.2MB in the beginning and 109.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:07:08,361 INFO L158 Benchmark]: Boogie Preprocessor took 52.88ms. Allocated memory is still 148.9MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:07:08,361 INFO L158 Benchmark]: RCFGBuilder took 924.81ms. Allocated memory is still 148.9MB. Free memory was 107.4MB in the beginning and 71.6MB in the end (delta: 35.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-24 23:07:08,362 INFO L158 Benchmark]: CodeCheck took 5783.92ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 71.6MB in the beginning and 143.2MB in the end (delta: -71.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:07:08,362 INFO L158 Benchmark]: Witness Printer took 43.77ms. Allocated memory is still 180.4MB. Free memory was 143.2MB in the beginning and 141.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:07:08,366 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: 5.7s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 293 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 142 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 242 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 242 mSolverCounterUnsat, 86 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 539 GetRequests, 444 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2805 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 283 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: [L2583] CALL, EXPR create() [L2554] struct hlist_head *head=malloc(sizeof(struct hlist_head)); [L2555] (head)->first = ((void *)0) VAL [head={5007:0}] [L2556] COND FALSE !(__VERIFIER_nondet_int()) [L2562] return head; [L2583] RET, EXPR create() [L2583] struct hlist_head *l = create(); [L2585] CALL loop(l) [L2566] struct my_item *now; VAL [head={5007:0}, head={5007:0}] [L2567] EXPR (head)->first [L2567] __typeof__((head)->first) ____ptr = ((head)->first); [L2567] EXPR ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0) [L2567] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2567] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2567] now = ({ __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); }) [L2567] COND TRUE \read(*now) [L2568] FCALL do_data(&(now->data)) [L2567] (now)->link.next * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 148.9MB. Free memory was 121.8MB in the beginning and 121.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.92ms. Allocated memory is still 148.9MB. Free memory was 116.0MB in the beginning and 112.2MB in the end (delta: 3.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.34ms. Allocated memory is still 148.9MB. Free memory was 112.2MB in the beginning and 109.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.88ms. Allocated memory is still 148.9MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 924.81ms. Allocated memory is still 148.9MB. Free memory was 107.4MB in the beginning and 71.6MB in the end (delta: 35.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * CodeCheck took 5783.92ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 71.6MB in the beginning and 143.2MB in the end (delta: -71.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.77ms. Allocated memory is still 180.4MB. Free memory was 143.2MB in the beginning and 141.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-24 23:07:08,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0e2dff0-5bc9-45f8-be95-89fecab4454f/bin/ukojak-verify-afCqCEvfdi/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)