./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5864ac90458653d62ec5af743c75ffe6f01a72df52f4dc88d993330cbbf93393 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:28:38,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:28:38,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:28:38,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:28:38,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:28:38,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:28:38,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:28:38,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:28:38,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:28:38,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:28:38,998 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:28:38,998 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:28:38,998 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:28:38,999 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:28:38,999 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:28:38,999 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:28:39,000 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:28:39,000 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:28:39,003 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:28:39,004 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:28:39,004 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:28:39,005 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:28:39,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:28:39,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:28:39,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:28:39,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:28:39,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:28:39,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:28:39,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:28:39,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:28:39,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:28:39,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:28:39,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:28:39,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:28:39,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:28:39,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:28:39,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:28:39,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:28:39,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:28:39,011 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:28:39,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:28:39,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:28:39,012 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:28:39,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:28:39,012 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5864ac90458653d62ec5af743c75ffe6f01a72df52f4dc88d993330cbbf93393 [2024-11-09 07:28:39,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:28:39,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:28:39,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:28:39,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:28:39,301 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:28:39,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i Unable to find full path for "g++" [2024-11-09 07:28:41,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:28:41,755 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:28:41,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i [2024-11-09 07:28:41,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/data/0dc4c92fb/d7494ac851a9425d9ed66ba720d9fede/FLAG0ab78b5e3 [2024-11-09 07:28:41,814 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/data/0dc4c92fb/d7494ac851a9425d9ed66ba720d9fede [2024-11-09 07:28:41,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:28:41,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:28:41,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:28:41,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:28:41,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:28:41,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:28:41" (1/1) ... [2024-11-09 07:28:41,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57525a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:41, skipping insertion in model container [2024-11-09 07:28:41,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:28:41" (1/1) ... [2024-11-09 07:28:41,942 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:28:42,239 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4494,4507] [2024-11-09 07:28:42,248 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4554,4567] [2024-11-09 07:28:43,294 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,295 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,296 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,297 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,298 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,317 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,318 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,323 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,324 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,329 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,332 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,333 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:43,338 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,046 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[150691,150704] [2024-11-09 07:28:44,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:28:44,064 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:28:44,079 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4494,4507] [2024-11-09 07:28:44,080 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[4554,4567] [2024-11-09 07:28:44,127 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,128 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,128 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,129 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,130 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,140 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,141 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,142 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,143 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,144 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,145 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,145 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,146 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:28:44,266 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness_negated.i[150691,150704] [2024-11-09 07:28:44,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:28:44,525 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:28:44,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44 WrapperNode [2024-11-09 07:28:44,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:28:44,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:28:44,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:28:44,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:28:44,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,645 INFO L138 Inliner]: procedures = 668, calls = 1039, calls flagged for inlining = 51, calls inlined = 4, statements flattened = 56 [2024-11-09 07:28:44,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:28:44,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:28:44,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:28:44,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:28:44,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:28:44,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:28:44,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:28:44,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:28:44,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (1/1) ... [2024-11-09 07:28:44,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:28:44,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:28:44,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:28:44,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:28:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:28:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:28:44,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:28:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-09 07:28:44,795 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-09 07:28:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:28:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:28:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:28:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:28:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 07:28:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 07:28:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:28:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:28:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:28:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-09 07:28:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-09 07:28:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:28:45,084 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:28:45,086 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:28:45,282 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-09 07:28:45,283 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:28:45,423 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:28:45,424 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:28:45,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:28:45 BoogieIcfgContainer [2024-11-09 07:28:45,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:28:45,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:28:45,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:28:45,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:28:45,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:28:41" (1/3) ... [2024-11-09 07:28:45,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b4bc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:28:45, skipping insertion in model container [2024-11-09 07:28:45,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:28:44" (2/3) ... [2024-11-09 07:28:45,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b4bc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:28:45, skipping insertion in model container [2024-11-09 07:28:45,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:28:45" (3/3) ... [2024-11-09 07:28:45,439 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness_negated.i [2024-11-09 07:28:45,456 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:28:45,457 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:28:45,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:28:45,542 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26bb5cd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:28:45,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:28:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:28:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 07:28:45,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:28:45,562 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:28:45,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:28:45,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:28:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1146392474, now seen corresponding path program 1 times [2024-11-09 07:28:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:28:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065777839] [2024-11-09 07:28:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:28:45,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 07:28:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:28:46,004 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 07:28:46,006 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 07:28:46,008 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:28:46,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:28:46,015 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 07:28:46,044 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:28:46,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:28:46 BoogieIcfgContainer [2024-11-09 07:28:46,050 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:28:46,051 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:28:46,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:28:46,052 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:28:46,053 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:28:45" (3/4) ... [2024-11-09 07:28:46,053 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 07:28:46,112 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:28:46,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:28:46,117 INFO L158 Benchmark]: Toolchain (without parser) took 4293.40ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 116.8MB in the beginning and 142.4MB in the end (delta: -25.6MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2024-11-09 07:28:46,117 INFO L158 Benchmark]: CDTParser took 1.26ms. Allocated memory is still 115.3MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:28:46,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2701.47ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 116.8MB in the beginning and 141.0MB in the end (delta: -24.1MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2024-11-09 07:28:46,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.44ms. Allocated memory is still 216.0MB. Free memory was 141.0MB in the beginning and 135.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 07:28:46,119 INFO L158 Benchmark]: Boogie Preprocessor took 61.55ms. Allocated memory is still 216.0MB. Free memory was 135.7MB in the beginning and 132.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 07:28:46,119 INFO L158 Benchmark]: RCFGBuilder took 711.45ms. Allocated memory is still 216.0MB. Free memory was 132.6MB in the beginning and 104.3MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 07:28:46,121 INFO L158 Benchmark]: TraceAbstraction took 622.45ms. Allocated memory is still 216.0MB. Free memory was 103.2MB in the beginning and 144.5MB in the end (delta: -41.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:28:46,121 INFO L158 Benchmark]: Witness Printer took 63.62ms. Allocated memory is still 216.0MB. Free memory was 144.5MB in the beginning and 142.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:28:46,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26ms. Allocated memory is still 115.3MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2701.47ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 116.8MB in the beginning and 141.0MB in the end (delta: -24.1MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.44ms. Allocated memory is still 216.0MB. Free memory was 141.0MB in the beginning and 135.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.55ms. Allocated memory is still 216.0MB. Free memory was 135.7MB in the beginning and 132.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 711.45ms. Allocated memory is still 216.0MB. Free memory was 132.6MB in the beginning and 104.3MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 622.45ms. Allocated memory is still 216.0MB. Free memory was 103.2MB in the beginning and 144.5MB in the end (delta: -41.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 63.62ms. Allocated memory is still 216.0MB. Free memory was 144.5MB in the beginning and 142.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; [L7361] CALL aws_linked_list_next_harness() [L7346] struct aws_linked_list_node node; [L7347] struct aws_linked_list_node after; [L7350] node.next = &after [L7351] after.prev = &node [L7354] CALL aws_linked_list_next(&node) [L4837] CALL, EXPR aws_linked_list_node_next_is_valid(node) VAL [\old(node)={9:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node [L4720] return node && node->next && node->next->prev == node; [L4837] RET, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={9:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4837] CALL assume_abort_if_not((aws_linked_list_node_next_is_valid(node))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) [L4837] RET assume_abort_if_not((aws_linked_list_node_next_is_valid(node))) VAL [node={9:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4838] EXPR node->next [L4838] struct aws_linked_list_node *rval = node->next; [L4839] CALL, EXPR aws_linked_list_node_next_is_valid(node) VAL [\old(node)={9:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node [L4720] return node && node->next && node->next->prev == node; [L4839] RET, EXPR aws_linked_list_node_next_is_valid(node) VAL [node={9:0}, rval={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4839] CALL __VERIFIER_assert(!((aws_linked_list_node_next_is_valid(node)))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 07:28:46,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bafff38-a04e-46ce-ad16-597ff101f9b4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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