./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:03:49,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:03:49,817 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:03:49,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:03:49,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:03:49,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:03:49,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:03:49,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:03:49,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:03:49,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:03:49,866 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:03:49,866 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:03:49,867 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:03:49,867 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:03:49,867 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:03:49,870 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:03:49,871 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:03:49,871 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:03:49,871 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:03:49,872 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:03:49,872 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:03:49,876 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:03:49,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:03:49,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:03:49,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:03:49,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:03:49,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:03:49,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:03:49,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:03:49,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:03:49,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:03:49,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:03:49,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:03:49,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:03:49,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:03:49,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:03:49,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:03:49,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:03:49,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:03:49,885 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:03:49,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:03:49,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:03:49,887 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:03:49,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:03:49,887 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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2024-11-09 07:03:50,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:03:50,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:03:50,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:03:50,249 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:03:50,253 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:03:50,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i Unable to find full path for "g++" [2024-11-09 07:03:52,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:03:53,077 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:03:53,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2024-11-09 07:03:53,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/data/33f42c4ce/376cc8c498354903b5a2d82f055f5ce1/FLAG0bd3a8983 [2024-11-09 07:03:53,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/data/33f42c4ce/376cc8c498354903b5a2d82f055f5ce1 [2024-11-09 07:03:53,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:03:53,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:03:53,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:03:53,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:03:53,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:03:53,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:03:53" (1/1) ... [2024-11-09 07:03:53,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fd21ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:53, skipping insertion in model container [2024-11-09 07:03:53,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:03:53" (1/1) ... [2024-11-09 07:03:53,350 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:03:53,658 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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2024-11-09 07:03:53,667 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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2024-11-09 07:03:54,552 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,553 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,553 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,554 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,556 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,572 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,573 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,575 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:54,576 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,575 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,577 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:03:55,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:03:55,823 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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2024-11-09 07:03:55,826 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_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2024-11-09 07:03:55,879 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,880 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,880 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,882 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,883 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,889 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,890 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,892 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:55,896 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:56,143 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-09 07:03:56,145 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:56,146 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 07:03:56,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-09 07:03:56,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:03:56,457 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:03:56,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56 WrapperNode [2024-11-09 07:03:56,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:03:56,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:03:56,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:03:56,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:03:56,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,657 INFO L138 Inliner]: procedures = 682, calls = 2798, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 891 [2024-11-09 07:03:56,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:03:56,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:03:56,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:03:56,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:03:56,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:03:56,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:03:56,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:03:56,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:03:56,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (1/1) ... [2024-11-09 07:03:56,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:03:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:03:56,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:03:56,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:03:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-09 07:03:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-09 07:03:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-09 07:03:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-09 07:03:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-09 07:03:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-09 07:03:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:03:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 07:03:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 07:03:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 07:03:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:03:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:03:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:03:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:03:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:03:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:03:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:03:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:03:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 07:03:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 07:03:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 07:03:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 07:03:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 07:03:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:03:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:03:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-11-09 07:03:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-11-09 07:03:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:03:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-09 07:03:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-09 07:03:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-09 07:03:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-09 07:03:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:03:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:03:57,193 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:03:57,196 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:04:03,883 INFO L? ?]: Removed 108 outVars from TransFormulas that were not future-live. [2024-11-09 07:04:03,884 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:04:04,524 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:04:04,525 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:04:04,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:04 BoogieIcfgContainer [2024-11-09 07:04:04,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:04:04,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:04:04,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:04:04,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:04:04,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:03:53" (1/3) ... [2024-11-09 07:04:04,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3715b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:04:04, skipping insertion in model container [2024-11-09 07:04:04,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:03:56" (2/3) ... [2024-11-09 07:04:04,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3715b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:04:04, skipping insertion in model container [2024-11-09 07:04:04,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:04:04" (3/3) ... [2024-11-09 07:04:04,539 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2024-11-09 07:04:04,557 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:04:04,557 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:04:04,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:04:04,650 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;@795fec5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:04:04,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:04:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-09 07:04:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 07:04:04,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:04:04,667 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:04:04,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:04:04,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:04:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash 885523129, now seen corresponding path program 1 times [2024-11-09 07:04:04,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:04:04,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077827297] [2024-11-09 07:04:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:04:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 07:05:52,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:52,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077827297] [2024-11-09 07:05:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077827297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:52,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:05:52,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882752850] [2024-11-09 07:05:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:52,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:05:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:05:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:52,260 INFO L87 Difference]: Start difference. First operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 07:05:54,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:56,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:59,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:59,893 INFO L93 Difference]: Finished difference Result 157 states and 215 transitions. [2024-11-09 07:05:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:05:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2024-11-09 07:05:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:59,908 INFO L225 Difference]: With dead ends: 157 [2024-11-09 07:05:59,908 INFO L226 Difference]: Without dead ends: 123 [2024-11-09 07:05:59,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:59,915 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 10 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:59,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 320 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 07:05:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-09 07:05:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-09 07:05:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-09 07:05:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2024-11-09 07:05:59,970 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2024-11-09 07:05:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:59,972 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2024-11-09 07:05:59,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 07:05:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2024-11-09 07:05:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:05:59,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:59,976 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:05:59,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:05:59,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:59,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:59,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1884871142, now seen corresponding path program 1 times [2024-11-09 07:05:59,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:59,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215079016] [2024-11-09 07:05:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:59,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 07:09:01,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:01,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215079016] [2024-11-09 07:09:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215079016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:01,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423112678] [2024-11-09 07:09:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:01,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:01,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:01,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bc84a5-c94a-4a88-8ad1-2e187bd05d67/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:10:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:10:53,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 7633 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 07:10:53,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:10:55,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 07:11:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:11:21,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:11:27,117 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 8385 disjunctions. This might take some time... [2024-11-09 07:11:32,843 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 8385 disjunctions.