./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/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 6a8b3323a92d99d7113afe189cb74ca3fccfd0743fd857bf4a57e73eb6656833 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:28:00,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:28:00,578 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 06:28:00,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:28:00,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:28:00,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:28:00,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:28:00,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:28:00,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:28:00,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:28:00,630 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:28:00,631 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:28:00,631 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:28:00,632 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:28:00,632 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:28:00,633 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:28:00,633 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:28:00,633 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:28:00,634 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:28:00,638 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:28:00,639 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:28:00,640 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:28:00,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:28:00,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:28:00,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:28:00,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:28:00,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:28:00,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:28:00,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:28:00,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:28:00,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:28:00,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:28:00,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:28:00,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:28:00,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:28:00,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:28:00,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:28:00,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:28:00,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:28:00,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:28:00,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:28:00,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:28:00,651 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:28:00,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:28:00,653 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a8b3323a92d99d7113afe189cb74ca3fccfd0743fd857bf4a57e73eb6656833 [2024-11-09 06:28:00,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:28:01,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:28:01,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:28:01,020 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:28:01,021 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:28:01,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i Unable to find full path for "g++" [2024-11-09 06:28:03,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:28:04,137 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:28:04,138 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i [2024-11-09 06:28:04,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/data/1f699edd5/629c9ce9fb1949158343b01330e18878/FLAGa925f6b15 [2024-11-09 06:28:04,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/data/1f699edd5/629c9ce9fb1949158343b01330e18878 [2024-11-09 06:28:04,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:28:04,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:28:04,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:28:04,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:28:04,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:28:04,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:04" (1/1) ... [2024-11-09 06:28:04,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ddc088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:04, skipping insertion in model container [2024-11-09 06:28:04,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:04" (1/1) ... [2024-11-09 06:28:04,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:28:04,828 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4500,4513] [2024-11-09 06:28:04,840 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4560,4573] [2024-11-09 06:28:05,904 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,906 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,907 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,908 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,910 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,933 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,934 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,937 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,938 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,942 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,943 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,944 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:05,945 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,772 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[150301,150314] [2024-11-09 06:28:06,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:28:06,795 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:28:06,828 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4500,4513] [2024-11-09 06:28:06,829 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[4560,4573] [2024-11-09 06:28:06,935 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,940 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,941 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,941 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,946 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,970 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,973 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,975 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,977 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,979 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,983 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,984 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:06,984 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:28:07,281 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_c07167f3-7918-4e72-a24f-f3feb5b3c10b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i[150301,150314] [2024-11-09 06:28:07,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:28:07,556 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:28:07,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07 WrapperNode [2024-11-09 06:28:07,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:28:07,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:28:07,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:28:07,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:28:07,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,687 INFO L138 Inliner]: procedures = 668, calls = 1032, calls flagged for inlining = 49, calls inlined = 3, statements flattened = 27 [2024-11-09 06:28:07,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:28:07,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:28:07,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:28:07,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:28:07,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:28:07,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:28:07,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:28:07,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:28:07,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (1/1) ... [2024-11-09 06:28:07,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:28:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:07,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:28:07,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:28:07,869 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2024-11-09 06:28:07,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2024-11-09 06:28:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-09 06:28:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-09 06:28:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:28:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:28:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:28:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:28:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:28:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:28:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:28:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:28:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:28:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:28:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:28:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:28:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:28:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:28:08,230 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:28:08,235 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:28:08,527 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 06:28:08,527 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:28:08,583 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:28:08,583 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 06:28:08,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:08 BoogieIcfgContainer [2024-11-09 06:28:08,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:28:08,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:28:08,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:28:08,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:28:08,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:28:04" (1/3) ... [2024-11-09 06:28:08,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3521ed93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:08, skipping insertion in model container [2024-11-09 06:28:08,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:07" (2/3) ... [2024-11-09 06:28:08,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3521ed93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:08, skipping insertion in model container [2024-11-09 06:28:08,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:08" (3/3) ... [2024-11-09 06:28:08,596 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness-1.i [2024-11-09 06:28:08,618 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:28:08,619 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:28:08,699 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:28:08,708 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;@4d8eab2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:28:08,709 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:28:08,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:28:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:28:08,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:08,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:08,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:28:08,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash 381485332, now seen corresponding path program 1 times [2024-11-09 06:28:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:08,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147947482] [2024-11-09 06:28:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:08,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:09,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147947482] [2024-11-09 06:28:09,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147947482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:09,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:28:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768709586] [2024-11-09 06:28:09,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:09,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:28:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:28:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:28:09,162 INFO L87 Difference]: Start difference. First operand has 33 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:28:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:09,206 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-09 06:28:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:28:09,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-09 06:28:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:09,219 INFO L225 Difference]: With dead ends: 60 [2024-11-09 06:28:09,219 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 06:28:09,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:28:09,228 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:09,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:28:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 06:28:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 06:28:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:28:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 06:28:09,291 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2024-11-09 06:28:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:09,291 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 06:28:09,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:28:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 06:28:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 06:28:09,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:09,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:09,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:28:09,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:28:09,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash -533231504, now seen corresponding path program 1 times [2024-11-09 06:28:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:09,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579480162] [2024-11-09 06:28:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:09,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:10,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579480162] [2024-11-09 06:28:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579480162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:10,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:10,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:28:10,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65407296] [2024-11-09 06:28:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:10,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:28:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:28:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:28:10,038 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:28:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:10,139 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-09 06:28:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:28:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-11-09 06:28:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:10,143 INFO L225 Difference]: With dead ends: 41 [2024-11-09 06:28:10,143 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 06:28:10,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:28:10,145 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:10,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 142 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:28:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 06:28:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-11-09 06:28:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:28:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-09 06:28:10,163 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22 [2024-11-09 06:28:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:10,163 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-09 06:28:10,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:28:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-09 06:28:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:28:10,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:10,166 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:10,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:28:10,167 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:28:10,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:10,167 INFO L85 PathProgramCache]: Analyzing trace with hash -453296917, now seen corresponding path program 1 times [2024-11-09 06:28:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043802765] [2024-11-09 06:28:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:10,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043802765] [2024-11-09 06:28:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043802765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:10,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:10,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:28:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001757178] [2024-11-09 06:28:10,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:10,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:28:10,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:28:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:28:10,464 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 06:28:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:10,523 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-09 06:28:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:28:10,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-09 06:28:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:10,527 INFO L225 Difference]: With dead ends: 68 [2024-11-09 06:28:10,527 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 06:28:10,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:28:10,532 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:10,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:28:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 06:28:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 06:28:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:28:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-09 06:28:10,548 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 23 [2024-11-09 06:28:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:10,548 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-09 06:28:10,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 06:28:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-09 06:28:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 06:28:10,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:10,550 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:10,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:28:10,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:28:10,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -156882313, now seen corresponding path program 1 times [2024-11-09 06:28:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:10,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463203541] [2024-11-09 06:28:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:11,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:11,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463203541] [2024-11-09 06:28:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463203541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:28:11,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743313578] [2024-11-09 06:28:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:28:11,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:11,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:28:11,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:28:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:11,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 06:28:11,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:28:11,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:28:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:12,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:28:13,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 06:28:13,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 06:28:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743313578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:28:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640711720] [2024-11-09 06:28:13,194 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:28:13,194 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:28:13,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:28:13,208 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:28:13,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:28:13,392 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:28:15,713 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 117 for LOIs [2024-11-09 06:28:15,827 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:28:15,872 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:28:16,122 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:28:16,667 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:28:21,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '653#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_18| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_18|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_18| 18446744073709551616)))) (= |~#s_can_fail_allocator_static~0.offset| 0) (exists ((|v_old(#memory_$Pointer$.base)_BEFORE_CALL_7| (Array Int (Array Int Int)))) (and (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_7| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_7| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_7| 4) 32) 0) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_7| 4) 0)) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_7| 4) 16)))) (exists ((|v_old(#memory_int)_BEFORE_CALL_7| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_BEFORE_CALL_7| 1) 1) 0) (= (select (select |v_old(#memory_int)_BEFORE_CALL_7| 1) 0) 48))) (exists ((|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_7| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_7| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_7| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_7| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_7| 4) 32) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_7| 4) 16)))) (= |__VERIFIER_assert_#in~cond| 0) (exists ((v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_13 Int) (|v_#length_8| (Array Int Int)) (|v_#valid_18| (Array Int Int))) (and (= (select |v_#valid_18| 2) 1) (= (store |v_#valid_18| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_13 1) |#valid|) (= (select |v_#valid_18| 0) 0) (= 1 (select |v_#valid_18| 1)) (= (select |v_#length_8| 2) 37) (= (store |v_#length_8| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_13 16) |#length|) (= (select |v_#valid_18| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_13) 0) (<= (+ |#StackHeapBarrier| 1) v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_13) (= (select |v_#length_8| 3) 12) (= (select |v_#length_8| 4) 40) (= (select |v_#valid_18| 4) 1) (= (select |v_#valid_18| 3) 1) (not (= (mod (select (select |#memory_int| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_13) 0) 256) 0)) (= (select |v_#length_8| 1) 2))) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:28:21,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:28:21,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:28:21,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 11] total 25 [2024-11-09 06:28:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131033329] [2024-11-09 06:28:21,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:28:21,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 06:28:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:21,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 06:28:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1434, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 06:28:21,928 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:28:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:23,194 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2024-11-09 06:28:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:28:23,196 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 24 [2024-11-09 06:28:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:23,199 INFO L225 Difference]: With dead ends: 77 [2024-11-09 06:28:23,200 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 06:28:23,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:28:23,206 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:23,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 323 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:28:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 06:28:23,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-09 06:28:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 06:28:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-09 06:28:23,233 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 24 [2024-11-09 06:28:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:23,233 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-09 06:28:23,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:28:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-09 06:28:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:28:23,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:23,236 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:23,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:28:23,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:28:23,441 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:28:23,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -237479987, now seen corresponding path program 1 times [2024-11-09 06:28:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992859028] [2024-11-09 06:28:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:28:23,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992859028] [2024-11-09 06:28:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992859028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:28:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046193623] [2024-11-09 06:28:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:23,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:28:23,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:23,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:28:23,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:28:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:24,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 06:28:24,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:28:24,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:28:24,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:28:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:24,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:28:25,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 06:28:25,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-09 06:28:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046193623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:28:25,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061688661] [2024-11-09 06:28:25,901 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:28:25,901 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:28:25,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:28:25,902 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:28:25,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:28:25,949 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:28:27,986 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:28:28,491 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:28:28,514 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:28:28,974 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:28:29,334 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:28:34,829 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1070#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (exists ((|v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_29 Int) (|v_old(#memory_int)_BEFORE_CALL_17| (Array Int (Array Int Int)))) (or (and (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 24)) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_17| 1) 0)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_29) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_4 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_4 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_4 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4 Int) (|v_aws_is_mem_zeroed_#t~mem42_25| Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_4 18446744073709551616)) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_4) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_4 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_25|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4 18446744073709551616))) (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4 18446744073709551616) 9223372036854775807) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_4) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_4 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_25|))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_25| 256) 0)))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 32) 0) (exists ((|v_#length_9| (Array Int Int))) (and (= (select |v_#length_9| 1) 2) (= |#length| (store |v_#length_9| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| 16)) (= (select |v_#length_9| 2) 37) (= 40 (select |v_#length_9| 4)) (= (select |v_#length_9| 3) 12))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_35| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_35| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_35|))) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 16)) (exists ((|v_#valid_19| (Array Int Int))) (and (= (select |v_#valid_19| 4) 1) (= (select |v_#valid_19| 2) 1) (= (select |v_#valid_19| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17|) 0) (= (select |v_#valid_19| 0) 0) (= (select |v_#valid_19| 1) 1) (= (select |v_#valid_19| 3) 1) (= (store |v_#valid_19| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| 1) |#valid|))) (= 0 (select (select |v_old(#memory_int)_BEFORE_CALL_17| 1) 1))) (and (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 24)) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_17| 1) 0)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (exists ((v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_3 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_3 Int) (|v_aws_is_mem_zeroed_#t~mem42_25| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_3 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_3 18446744073709551616)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_3) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_3 (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_25|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3 18446744073709551616))) (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3 18446744073709551616) 9223372036854775807) (= |v_aws_is_mem_zeroed_#t~mem42_25| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_3) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_3 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_3))))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_25| 256) 0)))) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_29) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 32) 0) (exists ((|v_#length_9| (Array Int Int))) (and (= (select |v_#length_9| 1) 2) (= |#length| (store |v_#length_9| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| 16)) (= (select |v_#length_9| 2) 37) (= 40 (select |v_#length_9| 4)) (= (select |v_#length_9| 3) 12))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_17| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_35| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_35| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_35|))) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_17| 4) 16)) (exists ((|v_#valid_19| (Array Int Int))) (and (= (select |v_#valid_19| 4) 1) (= (select |v_#valid_19| 2) 1) (= (select |v_#valid_19| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17|) 0) (= (select |v_#valid_19| 0) 0) (= (select |v_#valid_19| 1) 1) (= (select |v_#valid_19| 3) 1) (= (store |v_#valid_19| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_17| 1) |#valid|))) (= 0 (select (select |v_old(#memory_int)_BEFORE_CALL_17| 1) 1))))) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:28:34,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:28:34,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:28:34,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 12] total 28 [2024-11-09 06:28:34,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492271448] [2024-11-09 06:28:34,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:28:34,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 06:28:34,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 06:28:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1760, Unknown=1, NotChecked=0, Total=1892 [2024-11-09 06:28:34,833 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 28 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:28:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:36,074 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-09 06:28:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:28:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 28 [2024-11-09 06:28:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:36,078 INFO L225 Difference]: With dead ends: 89 [2024-11-09 06:28:36,078 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 06:28:36,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=186, Invalid=2465, Unknown=1, NotChecked=0, Total=2652 [2024-11-09 06:28:36,081 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:36,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:28:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 06:28:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-09 06:28:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 06:28:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-11-09 06:28:36,109 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 28 [2024-11-09 06:28:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:36,110 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-11-09 06:28:36,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:28:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-11-09 06:28:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 06:28:36,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:36,112 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:36,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:28:36,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:28:36,317 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:28:36,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -574915401, now seen corresponding path program 2 times [2024-11-09 06:28:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:36,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411952112] [2024-11-09 06:28:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:28:36,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411952112] [2024-11-09 06:28:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411952112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:28:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019821286] [2024-11-09 06:28:36,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:28:36,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:28:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:36,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:28:36,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:28:37,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 06:28:37,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:28:37,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 06:28:37,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:28:37,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:28:37,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:28:37,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:28:37,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:28:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:38,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:28:40,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-09 06:28:40,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-09 06:28:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:28:40,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019821286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:28:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [630503744] [2024-11-09 06:28:40,137 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:28:40,138 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:28:40,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:28:40,138 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:28:40,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:28:40,200 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:28:41,635 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:28:41,998 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:28:42,016 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:28:42,360 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:28:42,594 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:28:48,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1541#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0) (exists ((|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| Int) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| (Array Int (Array Int Int))) (|v_old(#memory_int)_BEFORE_CALL_27| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_45 Int)) (or (and (exists ((|v_#Ultimate.C_memset_#t~loopctr684_59| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_59|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_59| 18446744073709551616)))) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_27| 1) 0) 48) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_27| 1) 1) 0) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 32) 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_45) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#length_10| (Array Int Int))) (and (= (select |v_#length_10| 4) 40) (= |#length| (store |v_#length_10| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| 16)) (= (select |v_#length_10| 3) 12) (= 2 (select |v_#length_10| 1)) (= (select |v_#length_10| 2) 37))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27|) (exists ((|v_#valid_20| (Array Int Int))) (and (= (select |v_#valid_20| 0) 0) (= (select |v_#valid_20| 3) 1) (= (select |v_#valid_20| 2) 1) (= (select |v_#valid_20| 4) 1) (= (select |v_#valid_20| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27|) 0) (= (select |v_#valid_20| 1) 1) (= (store |v_#valid_20| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| 1) |#valid|))) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5 Int) (|v_aws_is_mem_zeroed_#t~mem42_43| Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_5 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_5 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_5 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_5 18446744073709551616)) (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5 18446744073709551616)) (= |v_aws_is_mem_zeroed_#t~mem42_43| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_5) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_5 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5 18446744073709551616))))) (and (= |v_aws_is_mem_zeroed_#t~mem42_43| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_5) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_5 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5 18446744073709551616)))) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5 18446744073709551616) 9223372036854775807))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_43| 256) 0)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|)) (and (exists ((|v_#Ultimate.C_memset_#t~loopctr684_59| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_59|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_59| 18446744073709551616)))) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_27| 1) 0) 48) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_27| 1) 1) 0) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 32) 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_45) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_27| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#length_10| (Array Int Int))) (and (= (select |v_#length_10| 4) 40) (= |#length| (store |v_#length_10| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| 16)) (= (select |v_#length_10| 3) 12) (= 2 (select |v_#length_10| 1)) (= (select |v_#length_10| 2) 37))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27|) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6 Int) (|v_aws_is_mem_zeroed_#t~mem42_43| Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_6 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_6 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_6 Int)) (and (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_6) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_6 (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_43|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6 18446744073709551616))) (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6 18446744073709551616) 9223372036854775807) (= |v_aws_is_mem_zeroed_#t~mem42_43| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_6) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_6))))) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_6 18446744073709551616)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_6) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_43| 256) 0)))) (exists ((|v_#valid_20| (Array Int Int))) (and (= (select |v_#valid_20| 0) 0) (= (select |v_#valid_20| 3) 1) (= (select |v_#valid_20| 2) 1) (= (select |v_#valid_20| 4) 1) (= (select |v_#valid_20| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27|) 0) (= (select |v_#valid_20| 1) 1) (= (store |v_#valid_20| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_27| 1) |#valid|))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_27| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|)))))' at error location [2024-11-09 06:28:48,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:28:48,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:28:48,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 19, 16] total 37 [2024-11-09 06:28:48,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610105918] [2024-11-09 06:28:48,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:28:48,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 06:28:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:48,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 06:28:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2590, Unknown=1, NotChecked=0, Total=2756 [2024-11-09 06:28:48,291 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 37 states, 31 states have (on average 1.903225806451613) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:28:58,155 WARN L286 SmtUtils]: Spent 8.76s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:29:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:00,015 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2024-11-09 06:29:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 06:29:00,016 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 1.903225806451613) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32 [2024-11-09 06:29:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:00,017 INFO L225 Difference]: With dead ends: 102 [2024-11-09 06:29:00,017 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 06:29:00,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=283, Invalid=4272, Unknown=1, NotChecked=0, Total=4556 [2024-11-09 06:29:00,021 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:00,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 448 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 06:29:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 06:29:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2024-11-09 06:29:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 40 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 06:29:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-11-09 06:29:00,043 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 32 [2024-11-09 06:29:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:00,044 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-11-09 06:29:00,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 1.903225806451613) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:29:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-11-09 06:29:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 06:29:00,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:00,045 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:00,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:29:00,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:00,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:29:00,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1153658483, now seen corresponding path program 3 times [2024-11-09 06:29:00,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434304418] [2024-11-09 06:29:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:00,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 06:29:00,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434304418] [2024-11-09 06:29:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434304418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967060762] [2024-11-09 06:29:00,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:29:00,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:00,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:00,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:00,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:29:00,935 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:29:00,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:29:00,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 06:29:00,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:01,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:29:01,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:29:01,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:01,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:29:01,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:01,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:29:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:02,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:04,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2024-11-09 06:29:04,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2024-11-09 06:29:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:04,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967060762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:29:04,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [3395042] [2024-11-09 06:29:04,538 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:29:04,539 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:04,539 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:04,539 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:04,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:04,597 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:29:05,971 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:29:06,289 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:29:06,302 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:29:06,645 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:29:06,990 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:13,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2079#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (exists ((v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_61 Int) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| Int) (|v_old(#memory_int)_BEFORE_CALL_37| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| (Array Int (Array Int Int)))) (or (and (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_85| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_85|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_85| 18446744073709551616)))) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 0)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_61) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_37| 1) 1) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 16)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 24)) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7 Int) (|v_aws_is_mem_zeroed_#t~mem42_63| Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_7 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_7 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_7 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_7 18446744073709551616)) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_7) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_7)) |v_aws_is_mem_zeroed_#t~mem42_63|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7 18446744073709551616) 9223372036854775807)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7 18446744073709551616)) (= |v_aws_is_mem_zeroed_#t~mem42_63| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_7) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_7 (- 18446744073709551616)))))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_63| 256) 0)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_7))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 32) 0) (exists ((|v_#valid_21| (Array Int Int))) (and (= (store |v_#valid_21| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| 1) |#valid|) (= (select |v_#valid_21| 4) 1) (= (select |v_#valid_21| 1) 1) (= (select |v_#valid_21| 0) 0) (= (select |v_#valid_21| 2) 1) (= (select |v_#valid_21| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37|) 0) (= (select |v_#valid_21| 3) 1))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_37| 1) 0) 48) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 32) 0) (exists ((|v_#length_11| (Array Int Int))) (and (= |#length| (store |v_#length_11| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| 16)) (= (select |v_#length_11| 4) 40) (= (select |v_#length_11| 3) 12) (= (select |v_#length_11| 2) 37) (= 2 (select |v_#length_11| 1))))) (and (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_85| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_85|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_85| 18446744073709551616)))) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 0)) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_8 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8 Int) (|v_aws_is_mem_zeroed_#t~mem42_63| Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_8 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_8 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_63| 256) 0)) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_8 18446744073709551616)) (or (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8 18446744073709551616) 9223372036854775807) (= |v_aws_is_mem_zeroed_#t~mem42_63| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_8) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_8 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8 18446744073709551616))))) (and (= |v_aws_is_mem_zeroed_#t~mem42_63| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_8) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_8 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8 18446744073709551616)))) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_8 18446744073709551616)))))) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_61) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_37| 1) 1) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 16)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 32) 0) (exists ((|v_#valid_21| (Array Int Int))) (and (= (store |v_#valid_21| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| 1) |#valid|) (= (select |v_#valid_21| 4) 1) (= (select |v_#valid_21| 1) 1) (= (select |v_#valid_21| 0) 0) (= (select |v_#valid_21| 2) 1) (= (select |v_#valid_21| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37|) 0) (= (select |v_#valid_21| 3) 1))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_37| 1) 0) 48) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_37| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_37| 4) 32) 0) (exists ((|v_#length_11| (Array Int Int))) (and (= |#length| (store |v_#length_11| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_37| 16)) (= (select |v_#length_11| 4) 40) (= (select |v_#length_11| 3) 12) (= (select |v_#length_11| 2) 37) (= 2 (select |v_#length_11| 1))))))) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:29:13,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:29:13,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:29:13,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 17] total 40 [2024-11-09 06:29:13,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148676810] [2024-11-09 06:29:13,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:29:13,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 06:29:13,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 06:29:13,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2890, Unknown=1, NotChecked=0, Total=3080 [2024-11-09 06:29:13,375 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 40 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:29:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:15,568 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2024-11-09 06:29:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 06:29:15,569 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 36 [2024-11-09 06:29:15,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:15,571 INFO L225 Difference]: With dead ends: 107 [2024-11-09 06:29:15,571 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 06:29:15,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=259, Invalid=3900, Unknown=1, NotChecked=0, Total=4160 [2024-11-09 06:29:15,576 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:15,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 477 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:29:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 06:29:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2024-11-09 06:29:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 44 states have internal predecessors, (56), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 06:29:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2024-11-09 06:29:15,614 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 36 [2024-11-09 06:29:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:15,614 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2024-11-09 06:29:15,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:29:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2024-11-09 06:29:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 06:29:15,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:15,616 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:15,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:29:15,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 06:29:15,817 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:29:15,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1454137609, now seen corresponding path program 4 times [2024-11-09 06:29:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:15,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283805455] [2024-11-09 06:29:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 06:29:16,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283805455] [2024-11-09 06:29:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283805455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781261733] [2024-11-09 06:29:16,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:29:16,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:16,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:16,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:16,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:29:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:16,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 06:29:16,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:16,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:29:16,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:29:16,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:16,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:29:16,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:16,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:29:16,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:16,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:29:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:18,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:20,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-09 06:29:20,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2024-11-09 06:29:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:29:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781261733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:29:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592270881] [2024-11-09 06:29:20,616 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:29:20,616 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:20,617 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:20,617 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:20,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:20,642 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:29:21,660 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:29:21,930 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:29:21,943 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:29:22,228 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:29:22,432 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:29,013 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2644#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0) (exists ((|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| Int) (|v_old(#memory_int)_BEFORE_CALL_47| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_77 Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| (Array Int (Array Int Int)))) (or (and (= 0 (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 32)) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_9 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9 Int) (|v_aws_is_mem_zeroed_#t~mem42_85| Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_9 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_9 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_9 18446744073709551616)) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_85| 256) 0)) (or (and (= |v_aws_is_mem_zeroed_#t~mem42_85| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_9) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_9 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9 18446744073709551616)))) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9 18446744073709551616))) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_9) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_9 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_85|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9 18446744073709551616) 9223372036854775807))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47|) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 24)) (= 0 (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 32)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_47| 1) 1) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_111| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_111|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_111| 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 0)) (exists ((|v_#valid_22| (Array Int Int))) (and (= (store |v_#valid_22| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| 1) |#valid|) (= (select |v_#valid_22| 3) 1) (= (select |v_#valid_22| 2) 1) (= (select |v_#valid_22| 1) 1) (= (select |v_#valid_22| 0) 0) (= (select |v_#valid_22| 4) 1) (= (select |v_#valid_22| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47|) 0))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_47| 1) 0) 48) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_77) (exists ((|v_#length_12| (Array Int Int))) (and (= 2 (select |v_#length_12| 1)) (= |#length| (store |v_#length_12| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| 16)) (= (select |v_#length_12| 2) 37) (= 40 (select |v_#length_12| 4)) (= (select |v_#length_12| 3) 12))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 24))) (and (= 0 (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 32)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47|) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 24)) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_10 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_10 Int) (|v_aws_is_mem_zeroed_#t~mem42_85| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_10 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_10 18446744073709551616)) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_85| 256) 0)) (or (and (= |v_aws_is_mem_zeroed_#t~mem42_85| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_10) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_10))) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10 18446744073709551616) 9223372036854775807)) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_10) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_10 (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_85|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_10 18446744073709551616)))))) (= 0 (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 32)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_47| 1) 1) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_111| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_111|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_111| 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 0)) (exists ((|v_#valid_22| (Array Int Int))) (and (= (store |v_#valid_22| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| 1) |#valid|) (= (select |v_#valid_22| 3) 1) (= (select |v_#valid_22| 2) 1) (= (select |v_#valid_22| 1) 1) (= (select |v_#valid_22| 0) 0) (= (select |v_#valid_22| 4) 1) (= (select |v_#valid_22| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47|) 0))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_47| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_47| 1) 0) 48) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_77) (exists ((|v_#length_12| (Array Int Int))) (and (= 2 (select |v_#length_12| 1)) (= |#length| (store |v_#length_12| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_47| 16)) (= (select |v_#length_12| 2) 37) (= 40 (select |v_#length_12| 4)) (= (select |v_#length_12| 3) 12))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_47| 4) 24))))))' at error location [2024-11-09 06:29:29,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:29:29,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:29:29,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 18] total 43 [2024-11-09 06:29:29,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656414830] [2024-11-09 06:29:29,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:29:29,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 06:29:29,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 06:29:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3218, Unknown=1, NotChecked=0, Total=3422 [2024-11-09 06:29:29,018 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 43 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 40 states have internal predecessors, (77), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:29:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:32,030 INFO L93 Difference]: Finished difference Result 116 states and 152 transitions. [2024-11-09 06:29:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 06:29:32,031 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 40 states have internal predecessors, (77), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 40 [2024-11-09 06:29:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:32,033 INFO L225 Difference]: With dead ends: 116 [2024-11-09 06:29:32,033 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 06:29:32,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=293, Invalid=4536, Unknown=1, NotChecked=0, Total=4830 [2024-11-09 06:29:32,036 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:32,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 640 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 06:29:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 06:29:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2024-11-09 06:29:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.4) internal successors, (63), 48 states have internal predecessors, (63), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 06:29:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2024-11-09 06:29:32,063 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 40 [2024-11-09 06:29:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:32,064 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2024-11-09 06:29:32,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 40 states have internal predecessors, (77), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:29:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2024-11-09 06:29:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 06:29:32,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:32,067 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:32,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:29:32,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:32,268 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:29:32,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 920427337, now seen corresponding path program 1 times [2024-11-09 06:29:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844158254] [2024-11-09 06:29:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 06:29:32,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844158254] [2024-11-09 06:29:32,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844158254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:29:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:29:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:29:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959394624] [2024-11-09 06:29:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:29:32,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:29:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:29:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:29:32,652 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 06:29:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:32,728 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-11-09 06:29:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:29:32,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-09 06:29:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:32,730 INFO L225 Difference]: With dead ends: 71 [2024-11-09 06:29:32,731 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 06:29:32,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:29:32,732 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:32,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 156 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:29:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 06:29:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-09 06:29:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 47 states have internal predecessors, (61), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:29:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2024-11-09 06:29:32,762 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 44 [2024-11-09 06:29:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:32,762 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2024-11-09 06:29:32,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 06:29:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2024-11-09 06:29:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:29:32,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:32,766 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:32,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 06:29:32,767 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:29:32,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:32,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1889249074, now seen corresponding path program 1 times [2024-11-09 06:29:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394876894] [2024-11-09 06:29:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:29:33,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394876894] [2024-11-09 06:29:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394876894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67962113] [2024-11-09 06:29:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:33,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:33,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:33,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:29:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:33,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-09 06:29:33,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:33,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:29:33,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:29:33,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:33,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:29:33,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:33,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:29:33,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:33,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:29:34,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:29:34,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 06:29:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:29:35,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 06:29:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67962113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:29:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [31343636] [2024-11-09 06:29:38,034 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2024-11-09 06:29:38,034 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:38,035 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:38,035 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:38,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:38,546 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:29:40,519 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:29:40,542 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 272 for LOIs [2024-11-09 06:29:41,689 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 20 for LOIs [2024-11-09 06:29:41,779 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:29:42,113 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:08,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3471#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (or (exists ((|v_ULTIMATE.start_aws_linked_list_node_reset_harness_#t~ret681#1_BEFORE_CALL_2| Int)) (and (or (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_13 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_13 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_13 Int)) (and (= |v_ULTIMATE.start_aws_linked_list_node_reset_harness_#t~ret681#1_BEFORE_CALL_2| 0) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_13 18446744073709551616)) (exists ((|v_aws_is_mem_zeroed_#t~mem42_105| Int)) (and (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_105| 256) 0)) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_13) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_13 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13 18446744073709551616) (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13 18446744073709551616))) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_13) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_13 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13 18446744073709551616) 9223372036854775807))))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13))) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_14 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_14 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_14 Int)) (and (exists ((|v_aws_is_mem_zeroed_#t~mem42_105| Int)) (and (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_105| 256) 0)) (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_14) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_14 (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|)) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_14) (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14 18446744073709551616) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_14)) |v_aws_is_mem_zeroed_#t~mem42_105|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14 18446744073709551616) 9223372036854775807))))) (= |v_ULTIMATE.start_aws_linked_list_node_reset_harness_#t~ret681#1_BEFORE_CALL_2| 0) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_14 18446744073709551616)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_14)))) (= |__VERIFIER_assert_#in~cond| 0))) (exists ((|v_aws_linked_list_node_reset_#t~ret298_BEFORE_CALL_15| Int) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| (Array Int (Array Int Int))) (|v_old(#memory_int)_BEFORE_CALL_59| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_101 Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| Int)) (and (= |__VERIFIER_assert_#in~cond| 0) (or (and (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_16 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_16 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_16 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_16 18446744073709551616)) (exists ((|v_aws_is_mem_zeroed_#t~mem42_105| Int)) (and (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_16) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_16 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|)) (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16 18446744073709551616) 9223372036854775807) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_16) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_16 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_105| 256) 0)))) (= |v_aws_linked_list_node_reset_#t~ret298_BEFORE_CALL_15| 0) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_16))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_59| 1) 1) 0) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_146| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_146|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_146| 18446744073709551616)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 32) 0) (exists ((|v_#length_13| (Array Int Int))) (and (= (select |v_#length_13| 3) 12) (= (store |v_#length_13| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| 16) |#length|) (= 2 (select |v_#length_13| 1)) (= 40 (select |v_#length_13| 4)) (= (select |v_#length_13| 2) 37))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_59| 1) 0) 48) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 0)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_101) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 32) 0) (exists ((|v_#valid_23| (Array Int Int))) (and (= (select |v_#valid_23| 1) 1) (= (select |v_#valid_23| 4) 1) (= (select |v_#valid_23| 0) 0) (= (select |v_#valid_23| 2) 1) (= (select |v_#valid_23| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70|) 0) (= (store |v_#valid_23| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| 1) |#valid|) (= (select |v_#valid_23| 3) 1))) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 0))) (and (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_59| 1) 1) 0) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_15 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_15 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_15 Int)) (and (exists ((|v_aws_is_mem_zeroed_#t~mem42_105| Int)) (and (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_105| 256) 0)) (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_15) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_15 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|)) (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15 18446744073709551616) 9223372036854775807) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_15) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_15 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_105|))))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15) (= |v_aws_linked_list_node_reset_#t~ret298_BEFORE_CALL_15| 0) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_15 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_146| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_146|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_146| 18446744073709551616)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 32) 0) (exists ((|v_#length_13| (Array Int Int))) (and (= (select |v_#length_13| 3) 12) (= (store |v_#length_13| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| 16) |#length|) (= 2 (select |v_#length_13| 1)) (= 40 (select |v_#length_13| 4)) (= (select |v_#length_13| 2) 37))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_59| 1) 0) 48) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 0)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_101) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_59| 4) 32) 0) (exists ((|v_#valid_23| (Array Int Int))) (and (= (select |v_#valid_23| 1) 1) (= (select |v_#valid_23| 4) 1) (= (select |v_#valid_23| 0) 0) (= (select |v_#valid_23| 2) 1) (= (select |v_#valid_23| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70|) 0) (= (store |v_#valid_23| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_70| 1) |#valid|) (= (select |v_#valid_23| 3) 1))) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_59| 4) 0))))))) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:30:08,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:08,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:08,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 13] total 38 [2024-11-09 06:30:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377143627] [2024-11-09 06:30:08,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:08,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 06:30:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 06:30:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3332, Unknown=7, NotChecked=0, Total=3540 [2024-11-09 06:30:08,883 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 38 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 34 states have internal predecessors, (74), 8 states have call successors, (17), 4 states have call predecessors, (17), 9 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-09 06:30:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:11,506 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions. [2024-11-09 06:30:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 06:30:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 34 states have internal predecessors, (74), 8 states have call successors, (17), 4 states have call predecessors, (17), 9 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) Word has length 45 [2024-11-09 06:30:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:11,508 INFO L225 Difference]: With dead ends: 123 [2024-11-09 06:30:11,508 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 06:30:11,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=297, Invalid=4526, Unknown=7, NotChecked=0, Total=4830 [2024-11-09 06:30:11,511 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:11,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 341 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 06:30:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 06:30:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2024-11-09 06:30:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 48 states have internal predecessors, (59), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:30:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-11-09 06:30:11,534 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 45 [2024-11-09 06:30:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:11,535 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-11-09 06:30:11,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 34 states have internal predecessors, (74), 8 states have call successors, (17), 4 states have call predecessors, (17), 9 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-09 06:30:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-11-09 06:30:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:30:11,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:11,536 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:11,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:11,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 06:30:11,737 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:30:11,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1946862271, now seen corresponding path program 5 times [2024-11-09 06:30:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982532456] [2024-11-09 06:30:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:11,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 06:30:12,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982532456] [2024-11-09 06:30:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982532456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718434765] [2024-11-09 06:30:12,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:30:12,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:12,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:12,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:12,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:30:13,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 06:30:13,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:13,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 06:30:13,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 06:30:13,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 25 refuted. 3 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 06:30:19,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718434765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:19,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1512237356] [2024-11-09 06:30:19,818 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:30:19,818 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:19,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:19,818 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:19,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:30:19,847 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:30:20,780 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:30:21,001 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:30:21,012 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:30:21,235 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:30:21,402 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:26,638 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4091#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_old(#memory_int)_BEFORE_CALL_69| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_111 Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| Int)) (or (and (exists ((|v_#valid_24| (Array Int Int))) (and (= (select |v_#valid_24| 1) 1) (= (store |v_#valid_24| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| 1) |#valid|) (= (select |v_#valid_24| 4) 1) (= (select |v_#valid_24| 0) 0) (= (select |v_#valid_24| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80|) 0) (= (select |v_#valid_24| 2) 1) (= (select |v_#valid_24| 3) 1))) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 8)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80|) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_111) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_181| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_181| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_181|))) (= (select (select |v_old(#memory_int)_BEFORE_CALL_69| 1) 1) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 16)) (exists ((|v_#length_14| (Array Int Int))) (and (= (select |v_#length_14| 3) 12) (= |#length| (store |v_#length_14| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| 16)) (= 2 (select |v_#length_14| 1)) (= (select |v_#length_14| 2) 37) (= 40 (select |v_#length_14| 4)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 24)) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 32) 0) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18 Int) (|v_aws_is_mem_zeroed_#t~mem42_121| Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_18 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_18 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_18 Int)) (and (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_18) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_18 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_121|)) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_18) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_18 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_121|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18 18446744073709551616) 9223372036854775807))) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_18 18446744073709551616)) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_121| 256) 0)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_18))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_69| 1) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|)) (and (exists ((|v_#valid_24| (Array Int Int))) (and (= (select |v_#valid_24| 1) 1) (= (store |v_#valid_24| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| 1) |#valid|) (= (select |v_#valid_24| 4) 1) (= (select |v_#valid_24| 0) 0) (= (select |v_#valid_24| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80|) 0) (= (select |v_#valid_24| 2) 1) (= (select |v_#valid_24| 3) 1))) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 8)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80|) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_111) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_181| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_181| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_181|))) (= (select (select |v_old(#memory_int)_BEFORE_CALL_69| 1) 1) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 16)) (exists ((|v_#length_14| (Array Int Int))) (and (= (select |v_#length_14| 3) 12) (= |#length| (store |v_#length_14| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_80| 16)) (= 2 (select |v_#length_14| 1)) (= (select |v_#length_14| 2) 37) (= 40 (select |v_#length_14| 4)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_69| 4) 24)) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 32) 0) (exists ((|v_aws_is_mem_zeroed_#t~mem42_121| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_17 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_17 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_17 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17) (or (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17 18446744073709551616) 9223372036854775807) (= |v_aws_is_mem_zeroed_#t~mem42_121| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_17) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_17 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17 18446744073709551616))))) (and (= |v_aws_is_mem_zeroed_#t~mem42_121| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_17) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_17 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17 18446744073709551616)))) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17 18446744073709551616)))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_121| 256) 0)) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_17 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_17 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_69| 1) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_69| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|)))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:30:26,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:26,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:26,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-09 06:30:26,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476736747] [2024-11-09 06:30:26,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:26,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 06:30:26,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:26,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 06:30:26,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1634, Unknown=4, NotChecked=0, Total=1892 [2024-11-09 06:30:26,641 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 28 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 06:30:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:27,964 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2024-11-09 06:30:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 06:30:27,965 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2024-11-09 06:30:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:27,966 INFO L225 Difference]: With dead ends: 117 [2024-11-09 06:30:27,967 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 06:30:27,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=416, Invalid=2030, Unknown=4, NotChecked=0, Total=2450 [2024-11-09 06:30:27,969 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:27,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:30:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 06:30:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-09 06:30:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 56 states have internal predecessors, (67), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:30:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2024-11-09 06:30:28,016 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 45 [2024-11-09 06:30:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:28,016 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2024-11-09 06:30:28,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 06:30:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2024-11-09 06:30:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 06:30:28,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:28,019 INFO L215 NwaCegarLoop]: trace histogram [15, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:28,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:30:28,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:28,220 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:30:28,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash 438125377, now seen corresponding path program 6 times [2024-11-09 06:30:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407132208] [2024-11-09 06:30:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 29 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:33,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407132208] [2024-11-09 06:30:33,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407132208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549211061] [2024-11-09 06:30:33,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:30:33,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:33,536 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:33,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:30:34,475 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:30:34,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:34,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-09 06:30:34,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:34,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:30:35,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-09 06:30:35,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:35,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-09 06:30:35,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:35,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2024-11-09 06:30:35,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:35,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 58 [2024-11-09 06:30:35,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:35,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 70 [2024-11-09 06:30:35,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:35,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 82 [2024-11-09 06:30:35,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:35,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 94 [2024-11-09 06:30:36,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:36,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 86 treesize of output 106 [2024-11-09 06:30:36,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:30:36,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 118 [2024-11-09 06:30:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:40,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:49,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 06:30:49,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-09 06:30:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:50,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549211061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:50,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [373366616] [2024-11-09 06:30:50,422 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:30:50,422 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:50,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:50,423 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:50,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:30:50,462 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:30:51,488 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:30:51,783 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:30:51,796 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:30:52,149 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:30:52,368 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:31:02,289 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4817#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| Int) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_127 Int) (|v_old(#memory_int)_BEFORE_CALL_79| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| (Array Int (Array Int Int)))) (or (and (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 32) 0) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_127) (= (select (select |v_old(#memory_int)_BEFORE_CALL_79| 1) 0) 48) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_240| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_240|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_240| 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 32) 0) (= (select (select |v_old(#memory_int)_BEFORE_CALL_79| 1) 1) 0) (exists ((|v_#valid_25| (Array Int Int))) (and (= |#valid| (store |v_#valid_25| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| 1)) (= (select |v_#valid_25| 2) 1) (= (select |v_#valid_25| 1) 1) (= (select |v_#valid_25| 4) 1) (= (select |v_#valid_25| 0) 0) (= (select |v_#valid_25| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90|) 0) (= (select |v_#valid_25| 3) 1))) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_19 Int) (|v_aws_is_mem_zeroed_#t~mem42_145| Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_19 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_19 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_145| 256) 0)) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_19 18446744073709551616)) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_19) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_19 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_145|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19 18446744073709551616) 9223372036854775807)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_19) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_19 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_19 18446744073709551616) (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_145|))))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 8)) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 16)) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90|) (exists ((|v_#length_15| (Array Int Int))) (and (= (select |v_#length_15| 3) 12) (= 40 (select |v_#length_15| 4)) (= (select |v_#length_15| 2) 37) (= (select |v_#length_15| 1) 2) (= |#length| (store |v_#length_15| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| 16)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 24)) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 24)) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 0))) (and (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 32) 0) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_127) (= (select (select |v_old(#memory_int)_BEFORE_CALL_79| 1) 0) 48) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_240| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_240|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_240| 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 32) 0) (= (select (select |v_old(#memory_int)_BEFORE_CALL_79| 1) 1) 0) (exists ((|v_#valid_25| (Array Int Int))) (and (= |#valid| (store |v_#valid_25| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| 1)) (= (select |v_#valid_25| 2) 1) (= (select |v_#valid_25| 1) 1) (= (select |v_#valid_25| 4) 1) (= (select |v_#valid_25| 0) 0) (= (select |v_#valid_25| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90|) 0) (= (select |v_#valid_25| 3) 1))) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 8)) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 16)) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90|) (exists ((|v_#length_15| (Array Int Int))) (and (= (select |v_#length_15| 3) 12) (= 40 (select |v_#length_15| 4)) (= (select |v_#length_15| 2) 37) (= (select |v_#length_15| 1) 2) (= |#length| (store |v_#length_15| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_90| 16)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 24)) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_79| 4) 24)) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_79| 4) 0)) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_20 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_20 Int) (|v_aws_is_mem_zeroed_#t~mem42_145| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_20 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_20 18446744073709551616)) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_145| 256) 0)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20) (or (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20 18446744073709551616) 9223372036854775807) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_20) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_20 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_145|)) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_20) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_20 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20 18446744073709551616) (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_145|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20 18446744073709551616))))))))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:31:02,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:31:02,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:02,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 30] total 89 [2024-11-09 06:31:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016299480] [2024-11-09 06:31:02,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:02,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-09 06:31:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-09 06:31:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=10289, Unknown=1, NotChecked=0, Total=10920 [2024-11-09 06:31:02,296 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 89 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 85 states have internal predecessors, (129), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:32:50,162 WARN L286 SmtUtils]: Spent 1.75m on a formula simplification. DAG size of input: 85 DAG size of output: 80 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:34:23,713 WARN L286 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 77 DAG size of output: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:35:33,202 WARN L286 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 69 DAG size of output: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:36:02,107 WARN L286 SmtUtils]: Spent 24.14s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:36:17,891 WARN L286 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 50 DAG size of output: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:36:26,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:36:27,939 INFO L93 Difference]: Finished difference Result 193 states and 246 transitions. [2024-11-09 06:36:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 06:36:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 85 states have internal predecessors, (129), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 53 [2024-11-09 06:36:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:36:27,941 INFO L225 Difference]: With dead ends: 193 [2024-11-09 06:36:27,941 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 06:36:27,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4918 ImplicationChecksByTransitivity, 337.3s TimeCoverageRelationStatistics Valid=1059, Invalid=17564, Unknown=9, NotChecked=0, Total=18632 [2024-11-09 06:36:27,946 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 105 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 3496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:36:27,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1507 Invalid, 3496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 06:36:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 06:36:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 121. [2024-11-09 06:36:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 98 states have internal predecessors, (114), 13 states have call successors, (13), 9 states have call predecessors, (13), 15 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-09 06:36:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2024-11-09 06:36:27,992 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 53 [2024-11-09 06:36:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:36:27,992 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2024-11-09 06:36:27,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 85 states have internal predecessors, (129), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:36:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2024-11-09 06:36:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 06:36:27,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:36:27,994 INFO L215 NwaCegarLoop]: trace histogram [15, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:36:28,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:36:28,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:36:28,194 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:36:28,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:36:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash -769340617, now seen corresponding path program 7 times [2024-11-09 06:36:28,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:36:28,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780399463] [2024-11-09 06:36:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:36:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:36:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:36:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 22 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:36:32,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:36:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780399463] [2024-11-09 06:36:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780399463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:36:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884857429] [2024-11-09 06:36:32,793 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:36:32,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:36:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:36:32,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:36:32,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:36:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:36:33,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-09 06:36:33,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:36:33,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:36:33,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:36:33,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:33,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:36:33,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:33,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:36:33,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:33,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:36:33,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:33,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 06:36:34,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:34,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 06:36:34,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:34,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 06:36:34,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:34,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 06:36:34,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:34,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 06:36:34,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:34,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-09 06:36:34,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:34,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2024-11-09 06:36:35,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:35,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2024-11-09 06:36:35,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:35,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2024-11-09 06:36:35,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:36:35,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2024-11-09 06:36:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:36:40,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:36:58,020 WARN L286 SmtUtils]: Spent 15.07s on a formula simplification. DAG size of input: 181 DAG size of output: 177 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:37:18,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2024-11-09 06:37:18,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2024-11-09 06:37:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 175 refuted. 8 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:37:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884857429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:37:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [578437605] [2024-11-09 06:37:18,634 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:37:18,634 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:37:18,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:37:18,634 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:37:18,635 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:37:18,676 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:37:19,405 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:37:19,625 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:37:19,635 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:37:19,839 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:37:20,007 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:37:27,986 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5806#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0) (exists ((|v_old(#memory_int)_BEFORE_CALL_89| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_143 Int)) (or (and (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_89| 1) 0) 48) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_22 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_22 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_22 Int) (|v_aws_is_mem_zeroed_#t~mem42_171| Int)) (and (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_22) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_22 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_171|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22 18446744073709551616) 9223372036854775807)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_22) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_22 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_171|))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_171| 256) 0)) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_22 18446744073709551616)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_22))) (exists ((|v_#length_16| (Array Int Int))) (and (= 40 (select |v_#length_16| 4)) (= |#length| (store |v_#length_16| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| 16)) (= 2 (select |v_#length_16| 1)) (= (select |v_#length_16| 2) 37) (= (select |v_#length_16| 3) 12))) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 16)) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_299| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_299| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_299|))) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 0)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_143) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 32) 0) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 32) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 16)) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 24)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_89| 1) 1) 0) (exists ((|v_#valid_26| (Array Int Int))) (and (= (select |v_#valid_26| 4) 1) (= (store |v_#valid_26| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| 1) |#valid|) (= (select |v_#valid_26| 0) 0) (= (select |v_#valid_26| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100|) 0) (= (select |v_#valid_26| 3) 1) (= (select |v_#valid_26| 1) 1) (= (select |v_#valid_26| 2) 1))) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 0))) (and (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_89| 1) 0) 48) (exists ((v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_21 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_21 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_21 Int) (|v_aws_is_mem_zeroed_#t~mem42_171| Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21) (or (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21 18446744073709551616) 9223372036854775807) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_21) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_21 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_171|)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_21) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_21 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_171|))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_171| 256) 0)) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_21 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_21 18446744073709551616)))) (exists ((|v_#length_16| (Array Int Int))) (and (= 40 (select |v_#length_16| 4)) (= |#length| (store |v_#length_16| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| 16)) (= 2 (select |v_#length_16| 1)) (= (select |v_#length_16| 2) 37) (= (select |v_#length_16| 3) 12))) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 16)) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_299| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_299| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_299|))) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 0)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_143) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 32) 0) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 32) 0) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 16)) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_89| 4) 24)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_89| 1) 1) 0) (exists ((|v_#valid_26| (Array Int Int))) (and (= (select |v_#valid_26| 4) 1) (= (store |v_#valid_26| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100| 1) |#valid|) (= (select |v_#valid_26| 0) 0) (= (select |v_#valid_26| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_100|) 0) (= (select |v_#valid_26| 3) 1) (= (select |v_#valid_26| 1) 1) (= (select |v_#valid_26| 2) 1))) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_89| 4) 0))))))' at error location [2024-11-09 06:37:27,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:37:27,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:37:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 31] total 93 [2024-11-09 06:37:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825168403] [2024-11-09 06:37:27,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:37:27,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-09 06:37:27,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:37:27,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-09 06:37:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=11080, Unknown=9, NotChecked=0, Total=11772 [2024-11-09 06:37:27,990 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 93 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 89 states have internal predecessors, (138), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:37:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:37:41,188 INFO L93 Difference]: Finished difference Result 228 states and 276 transitions. [2024-11-09 06:37:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 06:37:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 89 states have internal predecessors, (138), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 56 [2024-11-09 06:37:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:37:41,191 INFO L225 Difference]: With dead ends: 228 [2024-11-09 06:37:41,191 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 06:37:41,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4805 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=986, Invalid=17911, Unknown=9, NotChecked=0, Total=18906 [2024-11-09 06:37:41,194 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 101 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 4347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:37:41,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1889 Invalid, 4347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 06:37:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 06:37:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2024-11-09 06:37:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 104 states have internal predecessors, (126), 13 states have call successors, (13), 9 states have call predecessors, (13), 15 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-09 06:37:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2024-11-09 06:37:41,273 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 56 [2024-11-09 06:37:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:37:41,273 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2024-11-09 06:37:41,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 89 states have internal predecessors, (138), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:37:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2024-11-09 06:37:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 06:37:41,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:37:41,275 INFO L215 NwaCegarLoop]: trace histogram [15, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:37:41,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:37:41,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 06:37:41,476 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:37:41,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:37:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2037663871, now seen corresponding path program 8 times [2024-11-09 06:37:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:37:41,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558134847] [2024-11-09 06:37:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:37:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:37:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:37:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 16 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:37:45,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:37:45,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558134847] [2024-11-09 06:37:45,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558134847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:37:45,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665761336] [2024-11-09 06:37:45,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:37:45,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:37:45,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:37:45,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:37:45,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:37:52,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 06:37:52,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:37:52,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-09 06:37:52,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:37:52,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:37:53,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:37:53,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:37:53,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:37:53,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:37:53,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 06:37:53,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 06:37:53,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 06:37:53,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 06:37:53,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:53,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 06:37:54,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:54,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-09 06:37:54,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:54,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2024-11-09 06:37:54,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:54,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2024-11-09 06:37:54,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:54,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2024-11-09 06:37:54,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:37:54,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2024-11-09 06:37:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:37:59,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:38:17,183 WARN L286 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 171 DAG size of output: 169 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:38:22,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 195 [2024-11-09 06:38:22,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:22,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 262 [2024-11-09 06:38:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:38:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665761336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:38:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1669061095] [2024-11-09 06:38:22,710 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:38:22,710 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:38:22,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:38:22,711 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:38:22,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:38:22,750 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:38:23,536 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:38:23,760 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:38:23,771 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:38:23,983 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:38:24,168 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:38:32,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6861#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (exists ((|v_old(#memory_int)_BEFORE_CALL_99| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_156 Int) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| (Array Int (Array Int Int)))) (or (and (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 8)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_99| 1) 0) 48) (exists ((|v_aws_is_mem_zeroed_#t~mem42_200| Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_23 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_23 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_23 Int)) (and (<= (+ 1 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23 18446744073709551616)) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_23 18446744073709551616)) (or (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23 18446744073709551616) 9223372036854775807) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_23) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_23 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_200|)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_23) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_23 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_200|))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_23) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_200| 256) 0)))) (= 0 (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 32)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_156) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 16)) (= |#funAddr~s_can_fail_free_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 8)) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 32) 0) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_355| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_355| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_355|))) (exists ((|v_#valid_27| (Array Int Int))) (and (= (select |v_#valid_27| 0) 0) (= (select |v_#valid_27| 2) 1) (= (select |v_#valid_27| 1) 1) (= (select |v_#valid_27| 3) 1) (= (select |v_#valid_27| 4) 1) (= (select |v_#valid_27| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110|) 0) (= (store |v_#valid_27| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| 1) |#valid|))) (= (select (select |v_old(#memory_int)_BEFORE_CALL_99| 1) 1) 0) (exists ((|v_#length_17| (Array Int Int))) (and (= 40 (select |v_#length_17| 4)) (= (store |v_#length_17| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| 16) |#length|) (= (select |v_#length_17| 2) 37) (= 12 (select |v_#length_17| 3)) (= 2 (select |v_#length_17| 1)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 24)) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 24) |#funAddr~s_can_fail_calloc_allocator.base|)) (and (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 8)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_99| 1) 0) 48) (= 0 (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 32)) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_156) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 16)) (= |#funAddr~s_can_fail_free_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 8)) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 32) 0) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_355| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_355| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_355|))) (exists ((|v_aws_is_mem_zeroed_#t~mem42_200| Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_24 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_24 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_24 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_24 18446744073709551616)) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_24) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_24 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_200|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24 18446744073709551616) 9223372036854775807)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_24) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_24 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24 18446744073709551616) (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_200|))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_24) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_200| 256) 0)))) (exists ((|v_#valid_27| (Array Int Int))) (and (= (select |v_#valid_27| 0) 0) (= (select |v_#valid_27| 2) 1) (= (select |v_#valid_27| 1) 1) (= (select |v_#valid_27| 3) 1) (= (select |v_#valid_27| 4) 1) (= (select |v_#valid_27| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110|) 0) (= (store |v_#valid_27| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| 1) |#valid|))) (= (select (select |v_old(#memory_int)_BEFORE_CALL_99| 1) 1) 0) (exists ((|v_#length_17| (Array Int Int))) (and (= 40 (select |v_#length_17| 4)) (= (store |v_#length_17| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110| 16) |#length|) (= (select |v_#length_17| 2) 37) (= 12 (select |v_#length_17| 3)) (= 2 (select |v_#length_17| 1)))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_99| 4) 24)) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_110|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_99| 4) 24) |#funAddr~s_can_fail_calloc_allocator.base|)))) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:38:32,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:38:32,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:38:32,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 31] total 92 [2024-11-09 06:38:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318067098] [2024-11-09 06:38:32,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:38:32,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-09 06:38:32,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:38:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-09 06:38:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=10962, Unknown=1, NotChecked=0, Total=11556 [2024-11-09 06:38:32,473 INFO L87 Difference]: Start difference. First operand 127 states and 156 transitions. Second operand has 92 states, 90 states have (on average 1.5777777777777777) internal successors, (142), 90 states have internal predecessors, (142), 7 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:38:40,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:38:40,380 INFO L93 Difference]: Finished difference Result 257 states and 319 transitions. [2024-11-09 06:38:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 06:38:40,381 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 90 states have (on average 1.5777777777777777) internal successors, (142), 90 states have internal predecessors, (142), 7 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 59 [2024-11-09 06:38:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:38:40,383 INFO L225 Difference]: With dead ends: 257 [2024-11-09 06:38:40,383 INFO L226 Difference]: Without dead ends: 157 [2024-11-09 06:38:40,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3766 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=700, Invalid=12639, Unknown=1, NotChecked=0, Total=13340 [2024-11-09 06:38:40,385 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 85 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:38:40,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1488 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-09 06:38:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-09 06:38:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 79. [2024-11-09 06:38:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 65 states have internal predecessors, (74), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:38:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2024-11-09 06:38:40,443 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 59 [2024-11-09 06:38:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:38:40,443 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2024-11-09 06:38:40,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 90 states have (on average 1.5777777777777777) internal successors, (142), 90 states have internal predecessors, (142), 7 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:38:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2024-11-09 06:38:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 06:38:40,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:38:40,445 INFO L215 NwaCegarLoop]: trace histogram [15, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:38:40,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:40,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:38:40,646 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:38:40,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:38:40,646 INFO L85 PathProgramCache]: Analyzing trace with hash 466546423, now seen corresponding path program 9 times [2024-11-09 06:38:40,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:38:40,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956160038] [2024-11-09 06:38:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:38:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 11 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:38:44,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:38:44,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956160038] [2024-11-09 06:38:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956160038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:38:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757467974] [2024-11-09 06:38:44,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:38:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:38:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:38:44,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:38:44,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 06:38:45,234 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:38:45,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:38:45,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-09 06:38:45,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:45,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:38:45,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:38:45,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:45,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:38:45,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:45,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:38:45,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:45,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:38:45,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:45,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 06:38:45,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:45,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 06:38:46,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:46,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 06:38:46,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:46,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 06:38:46,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:46,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 06:38:46,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:46,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-09 06:38:46,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:46,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2024-11-09 06:38:46,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:46,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2024-11-09 06:38:47,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:47,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2024-11-09 06:38:47,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:47,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2024-11-09 06:38:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:38:53,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:39:15,212 WARN L286 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 176 DAG size of output: 173 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:39:21,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 197 [2024-11-09 06:39:21,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:21,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 248 [2024-11-09 06:39:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 1 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:39:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757467974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:39:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896119546] [2024-11-09 06:39:21,744 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:39:21,744 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:39:21,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:39:21,744 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:39:21,745 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:39:21,776 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:39:22,609 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:39:22,884 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:39:22,902 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:39:23,148 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:39:23,309 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:39:32,044 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7867#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| Int) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_172 Int) (|v_old(#memory_int)_BEFORE_CALL_109| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| (Array Int (Array Int Int)))) (or (and (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 16)) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_411| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_411| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_411|))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_109| 1) 0)) (exists ((|v_#valid_28| (Array Int Int))) (and (= (select |v_#valid_28| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120|) 0) (= (select |v_#valid_28| 3) 1) (= (select |v_#valid_28| 1) 1) (= (select |v_#valid_28| 2) 1) (= (select |v_#valid_28| 0) 0) (= (store |v_#valid_28| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| 1) |#valid|) (= (select |v_#valid_28| 4) 1))) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 24)) (exists ((|v_#length_18| (Array Int Int))) (and (= |#length| (store |v_#length_18| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| 16)) (= 12 (select |v_#length_18| 3)) (= 40 (select |v_#length_18| 4)) (= 2 (select |v_#length_18| 1)) (= (select |v_#length_18| 2) 37))) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_172) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (exists ((|v_aws_is_mem_zeroed_#t~mem42_231| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_25 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_25 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_25 Int)) (and (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_25 18446744073709551616)) (or (and (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25 18446744073709551616) 9223372036854775807) (= |v_aws_is_mem_zeroed_#t~mem42_231| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_25) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_25 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25 18446744073709551616))))) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_25) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_25 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_231|))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_231| 256) 0)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_25))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 32) 0) (= (select (select |v_old(#memory_int)_BEFORE_CALL_109| 1) 1) 0) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|)) (and (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 16)) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_411| Int)) (and (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_411| 18446744073709551616)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_411|))) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_aws_is_mem_zeroed_#t~mem42_231| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_26 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_26 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_26 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26) (or (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_26) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_26 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_231|) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26 18446744073709551616))) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_26) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_26 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_231|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26 18446744073709551616) 9223372036854775807))) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_231| 256) 0)) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_26 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_26 18446744073709551616)))) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_109| 1) 0)) (exists ((|v_#valid_28| (Array Int Int))) (and (= (select |v_#valid_28| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120|) 0) (= (select |v_#valid_28| 3) 1) (= (select |v_#valid_28| 1) 1) (= (select |v_#valid_28| 2) 1) (= (select |v_#valid_28| 0) 0) (= (store |v_#valid_28| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| 1) |#valid|) (= (select |v_#valid_28| 4) 1))) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 16) |#funAddr~s_can_fail_realloc_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 24)) (exists ((|v_#length_18| (Array Int Int))) (and (= |#length| (store |v_#length_18| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| 16)) (= 12 (select |v_#length_18| 3)) (= 40 (select |v_#length_18| 4)) (= 2 (select |v_#length_18| 1)) (= (select |v_#length_18| 2) 37))) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_120| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_172) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 32) 0) (= (select (select |v_old(#memory_int)_BEFORE_CALL_109| 1) 1) 0) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_109| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_109| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|)))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:39:32,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:39:32,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:39:32,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 36, 33] total 97 [2024-11-09 06:39:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116986989] [2024-11-09 06:39:32,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:39:32,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 06:39:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:39:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 06:39:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=12079, Unknown=2, NotChecked=0, Total=12656 [2024-11-09 06:39:32,048 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 97 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 93 states have internal predecessors, (156), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:39:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:39:43,866 INFO L93 Difference]: Finished difference Result 150 states and 175 transitions. [2024-11-09 06:39:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 06:39:43,867 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 93 states have internal predecessors, (156), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 62 [2024-11-09 06:39:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:39:43,868 INFO L225 Difference]: With dead ends: 150 [2024-11-09 06:39:43,869 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 06:39:43,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4201 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=739, Invalid=16551, Unknown=2, NotChecked=0, Total=17292 [2024-11-09 06:39:43,871 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 4301 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 4356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:39:43,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1783 Invalid, 4356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4301 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-09 06:39:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 06:39:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2024-11-09 06:39:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 65 states have (on average 1.2) internal successors, (78), 68 states have internal predecessors, (78), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:39:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2024-11-09 06:39:43,915 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 62 [2024-11-09 06:39:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:39:43,915 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2024-11-09 06:39:43,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 93 states have internal predecessors, (156), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:39:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2024-11-09 06:39:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 06:39:43,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:39:43,917 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:39:43,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 06:39:44,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 06:39:44,117 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:39:44,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:39:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -186516543, now seen corresponding path program 10 times [2024-11-09 06:39:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:39:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501718329] [2024-11-09 06:39:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:39:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:39:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:39:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:39:48,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:39:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501718329] [2024-11-09 06:39:48,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501718329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:39:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193405629] [2024-11-09 06:39:48,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:39:48,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:39:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:39:48,011 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:39:48,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 06:39:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:39:48,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-09 06:39:48,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:39:48,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:39:49,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:39:49,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:39:49,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:39:49,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:39:49,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 06:39:49,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 06:39:49,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 06:39:49,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 06:39:49,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:49,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 06:39:50,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:50,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-09 06:39:50,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:50,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2024-11-09 06:39:50,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:50,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2024-11-09 06:39:50,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:50,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2024-11-09 06:39:51,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:39:51,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2024-11-09 06:39:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:39:57,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:40:15,026 WARN L286 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 176 DAG size of output: 173 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:40:19,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 98 [2024-11-09 06:40:19,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 160 [2024-11-09 06:40:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 69 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:40:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193405629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:40:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101681429] [2024-11-09 06:40:20,268 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:40:20,269 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:40:20,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:40:20,269 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:40:20,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:40:20,299 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:40:21,178 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:40:21,414 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:40:21,425 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:40:21,635 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:40:21,796 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:40:31,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8763#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| Int) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_188 Int) (|v_old(#memory_int)_BEFORE_CALL_119| (Array Int (Array Int Int)))) (or (and (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 16)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 24) |#funAddr~s_can_fail_calloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 24)) (exists ((|v_#length_19| (Array Int Int))) (and (= (store |v_#length_19| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| 16) |#length|) (= (select |v_#length_19| 1) 2) (= 40 (select |v_#length_19| 4)) (= 12 (select |v_#length_19| 3)) (= (select |v_#length_19| 2) 37))) (exists ((|v_aws_is_mem_zeroed_#t~mem42_263| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_27 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_27 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_27 Int)) (and (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_263| 256) 0)) (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27 18446744073709551616)) (= |v_aws_is_mem_zeroed_#t~mem42_263| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_27) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_27 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27 18446744073709551616))))) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_27) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_27 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_263|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27 18446744073709551616) 9223372036854775807))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_27 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_27 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 32) 0) (exists ((|v_#valid_29| (Array Int Int))) (and (= (select |v_#valid_29| 2) 1) (= (select |v_#valid_29| 3) 1) (= (select |v_#valid_29| 1) 1) (= (select |v_#valid_29| 4) 1) (= |#valid| (store |v_#valid_29| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| 1)) (= (select |v_#valid_29| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130|) 0) (= (select |v_#valid_29| 0) 0))) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_467| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_467|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_467| 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_119| 1) 1) 0) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130|) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_119| 1) 0) 48) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 32) 0) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_188)) (and (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 16)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 0)) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 24) |#funAddr~s_can_fail_calloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 24)) (exists ((|v_#length_19| (Array Int Int))) (and (= (store |v_#length_19| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| 16) |#length|) (= (select |v_#length_19| 1) 2) (= 40 (select |v_#length_19| 4)) (= 12 (select |v_#length_19| 3)) (= (select |v_#length_19| 2) 37))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 32) 0) (exists ((|v_#valid_29| (Array Int Int))) (and (= (select |v_#valid_29| 2) 1) (= (select |v_#valid_29| 3) 1) (= (select |v_#valid_29| 1) 1) (= (select |v_#valid_29| 4) 1) (= |#valid| (store |v_#valid_29| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| 1)) (= (select |v_#valid_29| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130|) 0) (= (select |v_#valid_29| 0) 0))) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_467| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_467|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_467| 18446744073709551616)))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_119| 4) 8) |#funAddr~s_can_fail_free_allocator.base|) (= (select (select |v_old(#memory_int)_BEFORE_CALL_119| 1) 1) 0) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130|) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_119| 1) 0) 48) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 0) |#funAddr~s_can_fail_malloc_allocator.offset|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_119| 4) 32) 0) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_130| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_188) (exists ((|v_aws_is_mem_zeroed_#t~mem42_263| Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_28 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_28 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_28 Int)) (and (or (and (= |v_aws_is_mem_zeroed_#t~mem42_263| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_28) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_28 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28 18446744073709551616)))) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28 18446744073709551616) 9223372036854775807)) (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_28) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_28 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_263|))) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_28 18446744073709551616)) (not (= (mod |v_aws_is_mem_zeroed_#t~mem42_263| 256) 0)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_28)))))) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:40:31,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:40:31,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:40:31,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 33] total 100 [2024-11-09 06:40:31,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674189633] [2024-11-09 06:40:31,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:40:31,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-09 06:40:31,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:40:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-09 06:40:31,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=12709, Unknown=1, NotChecked=0, Total=13340 [2024-11-09 06:40:31,089 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 100 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:40:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:40:43,022 INFO L93 Difference]: Finished difference Result 150 states and 177 transitions. [2024-11-09 06:40:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 06:40:43,022 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 65 [2024-11-09 06:40:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:40:43,024 INFO L225 Difference]: With dead ends: 150 [2024-11-09 06:40:43,024 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 06:40:43,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4187 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=799, Invalid=17290, Unknown=1, NotChecked=0, Total=18090 [2024-11-09 06:40:43,026 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 99 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:40:43,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1870 Invalid, 4374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4323 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-09 06:40:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 06:40:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2024-11-09 06:40:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 71 states have internal predecessors, (84), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 06:40:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2024-11-09 06:40:43,085 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 65 [2024-11-09 06:40:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:40:43,085 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2024-11-09 06:40:43,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-09 06:40:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2024-11-09 06:40:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 06:40:43,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:40:43,086 INFO L215 NwaCegarLoop]: trace histogram [15, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:40:43,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:40:43,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 06:40:43,287 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:40:43,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:40:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash 616514231, now seen corresponding path program 11 times [2024-11-09 06:40:43,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:40:43,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497100186] [2024-11-09 06:40:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:40:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:40:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:40:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:40:46,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:40:46,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497100186] [2024-11-09 06:40:46,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497100186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:40:46,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957003826] [2024-11-09 06:40:46,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:40:46,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:40:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:40:46,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:40:46,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c07167f3-7918-4e72-a24f-f3feb5b3c10b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 06:41:18,919 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 06:41:18,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:41:18,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-09 06:41:18,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:41:19,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:41:19,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 06:41:19,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-09 06:41:19,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-09 06:41:19,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 06:41:19,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-09 06:41:19,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-09 06:41:19,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-09 06:41:19,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:19,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-09 06:41:20,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:20,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-09 06:41:20,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:20,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-09 06:41:20,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:20,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2024-11-09 06:41:20,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:20,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2024-11-09 06:41:20,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:20,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2024-11-09 06:41:21,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:41:21,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2024-11-09 06:41:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:41:28,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:41:46,519 WARN L286 SmtUtils]: Spent 13.59s on a formula simplification. DAG size of input: 171 DAG size of output: 169 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:41:50,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 98 [2024-11-09 06:41:50,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 156 [2024-11-09 06:41:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 105 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:41:51,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957003826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:41:51,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1217505199] [2024-11-09 06:41:51,012 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 06:41:51,013 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:41:51,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:41:51,013 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:41:51,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:41:51,048 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_reset with input of size 108 for LOIs [2024-11-09 06:41:51,806 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2024-11-09 06:41:52,008 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 97 for LOIs [2024-11-09 06:41:52,018 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 114 for LOIs [2024-11-09 06:41:52,263 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 125 for LOIs [2024-11-09 06:41:52,436 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:42:01,515 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9685#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (exists ((|v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| (Array Int (Array Int Int))) (|v_old(#memory_int)_BEFORE_CALL_129| (Array Int (Array Int Int))) (v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_204 Int) (|v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| (Array Int (Array Int Int))) (|v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| Int)) (or (and (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 0)) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#valid_30| (Array Int Int))) (and (= (select |v_#valid_30| 2) 1) (= (select |v_#valid_30| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140|) 0) (= (select |v_#valid_30| 0) 0) (= 1 (select |v_#valid_30| 4)) (= (select |v_#valid_30| 1) 1) (= (store |v_#valid_30| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| 1) |#valid|) (= (select |v_#valid_30| 3) 1))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (exists ((v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29 Int) (|v_aws_is_mem_zeroed_#t~mem42_297| Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_29 Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_29 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_29 Int)) (and (or (and (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29 18446744073709551616)) (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_29) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_29 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29 18446744073709551616) (- 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_297|)) (and (= (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_29) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_29 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29 18446744073709551616))) |v_aws_is_mem_zeroed_#t~mem42_297|) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29 18446744073709551616) 9223372036854775807))) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29) (<= (+ (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_29 18446744073709551616) 1) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_29 18446744073709551616)) (not (= 0 (mod |v_aws_is_mem_zeroed_#t~mem42_297| 256))))) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_129| 1) 1) 0) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_204) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_523| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_523|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_523| 18446744073709551616)))) (exists ((|v_#length_20| (Array Int Int))) (and (= 2 (select |v_#length_20| 1)) (= (store |v_#length_20| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| 16) |#length|) (= 40 (select |v_#length_20| 4)) (= (select |v_#length_20| 2) 37) (= (select |v_#length_20| 3) 12))) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_129| 1) 0)) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140|) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 24)) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 8))) (and (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 0)) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 24)) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 0) |#funAddr~s_can_fail_malloc_allocator.base|) (= (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 8) |#funAddr~s_can_fail_free_allocator.offset|) (exists ((|v_#valid_30| (Array Int Int))) (and (= (select |v_#valid_30| 2) 1) (= (select |v_#valid_30| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140|) 0) (= (select |v_#valid_30| 0) 0) (= 1 (select |v_#valid_30| 4)) (= (select |v_#valid_30| 1) 1) (= (store |v_#valid_30| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| 1) |#valid|) (= (select |v_#valid_30| 3) 1))) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 32) 0) (= (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 16) |#funAddr~s_can_fail_realloc_allocator.base|) (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |v_old(#memory_$Pointer$.offset)_BEFORE_CALL_129| 4) 16)) (= (select (select |v_old(#memory_int)_BEFORE_CALL_129| 1) 1) 0) (exists ((v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_30 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_30 Int) (|v_aws_is_mem_zeroed_#t~mem42_297| Int) (v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_30 Int) (v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30 Int)) (and (or (and (= |v_aws_is_mem_zeroed_#t~mem42_297| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_30) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_30 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30 18446744073709551616)))) (<= (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30 18446744073709551616) 9223372036854775807)) (and (= |v_aws_is_mem_zeroed_#t~mem42_297| (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_30) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_30 (- 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30 18446744073709551616)))) (<= 9223372036854775808 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30 18446744073709551616)))) (<= (+ 1 (mod v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30 18446744073709551616)) (mod v_aws_is_mem_zeroed_~bufsize_BEFORE_RETURN_30 18446744073709551616)) (<= 0 v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_30) (not (= 0 (mod |v_aws_is_mem_zeroed_#t~mem42_297| 256))))) (= |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| v_aws_linked_list_node_reset_~node.base_BEFORE_CALL_204) (exists ((|v_#Ultimate.C_memset_#t~loopctr684_523| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr684_523|) (<= 15 (mod |v_#Ultimate.C_memset_#t~loopctr684_523| 18446744073709551616)))) (exists ((|v_#length_20| (Array Int Int))) (and (= 2 (select |v_#length_20| 1)) (= (store |v_#length_20| |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140| 16) |#length|) (= 40 (select |v_#length_20| 4)) (= (select |v_#length_20| 2) 37) (= (select |v_#length_20| 3) 12))) (= 48 (select (select |v_old(#memory_int)_BEFORE_CALL_129| 1) 0)) (<= (+ |#StackHeapBarrier| 1) |v_aws_linked_list_node_reset_#in~node.base_BEFORE_CALL_140|) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 24)) (= |#funAddr~s_can_fail_free_allocator.base| (select (select |v_old(#memory_$Pointer$.base)_BEFORE_CALL_129| 4) 8))))) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-09 06:42:01,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:42:01,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:42:01,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 38, 36] total 105 [2024-11-09 06:42:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047802032] [2024-11-09 06:42:01,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:42:01,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-09 06:42:01,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:42:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-09 06:42:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=684, Invalid=13835, Unknown=1, NotChecked=0, Total=14520 [2024-11-09 06:42:01,518 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 105 states, 99 states have (on average 1.7575757575757576) internal successors, (174), 100 states have internal predecessors, (174), 10 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9)