./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E --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 59c6b72a732d91c045894268c659507998ee445c19bfbe580f6574a50ad495ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:15:40,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:15:40,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 05:15:40,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:15:40,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:15:40,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:15:40,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:15:40,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:15:40,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:15:40,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:15:40,441 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:15:40,441 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:15:40,441 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:15:40,441 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:15:40,441 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:15:40,442 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:15:40,442 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:15:40,442 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:15:40,442 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:15:40,442 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:15:40,442 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:15:40,443 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:15:40,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:15:40,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:15:40,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:15:40,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:15:40,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:15:40,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:15:40,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:15:40,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:15:40,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:15:40,446 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E 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 -> 59c6b72a732d91c045894268c659507998ee445c19bfbe580f6574a50ad495ad [2024-11-14 05:15:40,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:15:40,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:15:40,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:15:40,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:15:40,787 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:15:40,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i Unable to find full path for "g++" [2024-11-14 05:15:42,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:15:43,474 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:15:43,475 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i [2024-11-14 05:15:43,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/data/5e5ba99f6/cb2fb4d64e9141d590353fa8c47e7eb2/FLAGdfc8b721f [2024-11-14 05:15:43,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/data/5e5ba99f6/cb2fb4d64e9141d590353fa8c47e7eb2 [2024-11-14 05:15:43,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:15:43,570 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:15:43,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:15:43,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:15:43,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:15:43,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:15:43" (1/1) ... [2024-11-14 05:15:43,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4e1fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:43, skipping insertion in model container [2024-11-14 05:15:43,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:15:43" (1/1) ... [2024-11-14 05:15:43,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:15:44,015 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_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4496,4509] [2024-11-14 05:15:44,022 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_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4556,4569] [2024-11-14 05:15:45,216 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,218 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,219 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,220 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,224 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,250 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,251 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,253 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,254 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,256 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,257 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,258 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:45,258 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,029 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_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[150856,150869] [2024-11-14 05:15:46,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:15:46,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:15:46,075 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_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4496,4509] [2024-11-14 05:15:46,076 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_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4556,4569] [2024-11-14 05:15:46,187 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,187 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,187 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,188 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,188 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,199 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,200 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,202 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,203 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,205 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,206 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,207 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,208 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:15:46,373 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_235c2848-4e83-4d0f-8941-113a91efd5ca/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[150856,150869] [2024-11-14 05:15:46,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:15:46,707 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:15:46,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46 WrapperNode [2024-11-14 05:15:46,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:15:46,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:15:46,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:15:46,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:15:46,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,854 INFO L138 Inliner]: procedures = 668, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 86 [2024-11-14 05:15:46,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:15:46,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:15:46,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:15:46,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:15:46,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:15:46,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:15:46,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:15:46,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:15:46,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:15:46,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:46,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:15:46,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:15:47,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-14 05:15:47,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-14 05:15:47,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-14 05:15:47,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-14 05:15:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:15:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:15:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:15:47,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:15:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-14 05:15:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-14 05:15:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:15:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:15:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:15:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:15:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 05:15:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 05:15:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:15:47,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:15:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:15:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:15:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:15:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-14 05:15:47,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-14 05:15:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:15:47,315 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:15:47,317 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:15:47,655 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-14 05:15:47,655 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:15:47,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:15:47,777 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:15:47,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:15:47 BoogieIcfgContainer [2024-11-14 05:15:47,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:15:47,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:15:47,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:15:47,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:15:47,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:15:43" (1/3) ... [2024-11-14 05:15:47,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8cd508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:15:47, skipping insertion in model container [2024-11-14 05:15:47,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (2/3) ... [2024-11-14 05:15:47,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8cd508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:15:47, skipping insertion in model container [2024-11-14 05:15:47,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:15:47" (3/3) ... [2024-11-14 05:15:47,787 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness_negated.i [2024-11-14 05:15:47,806 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:15:47,808 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_remove_harness_negated.i that has 8 procedures, 52 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 05:15:47,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:15:47,891 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;@7b8c1720, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:15:47,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:15:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-14 05:15:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:15:47,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:47,910 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:15:47,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:47,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:47,918 INFO L85 PathProgramCache]: Analyzing trace with hash 788935488, now seen corresponding path program 1 times [2024-11-14 05:15:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:47,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255419611] [2024-11-14 05:15:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:15:48,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255419611] [2024-11-14 05:15:48,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255419611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:15:48,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:15:48,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:15:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794168411] [2024-11-14 05:15:48,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:15:48,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:15:48,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:15:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:15:48,509 INFO L87 Difference]: Start difference. First operand has 52 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:15:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:48,601 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2024-11-14 05:15:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:15:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2024-11-14 05:15:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:48,613 INFO L225 Difference]: With dead ends: 92 [2024-11-14 05:15:48,614 INFO L226 Difference]: Without dead ends: 50 [2024-11-14 05:15:48,619 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 [2024-11-14 05:15:48,623 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:48,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:15:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-14 05:15:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-14 05:15:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 05:15:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-14 05:15:48,678 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 30 [2024-11-14 05:15:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:48,679 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-14 05:15:48,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:15:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-14 05:15:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:15:48,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:48,683 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:15:48,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:15:48,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:48,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1495768842, now seen corresponding path program 1 times [2024-11-14 05:15:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:48,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178844763] [2024-11-14 05:15:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:15:49,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:49,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178844763] [2024-11-14 05:15:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178844763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:15:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:15:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:15:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646235360] [2024-11-14 05:15:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:15:49,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:15:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:15:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:15:49,550 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 05:15:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:49,676 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2024-11-14 05:15:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:15:49,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 35 [2024-11-14 05:15:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:49,679 INFO L225 Difference]: With dead ends: 86 [2024-11-14 05:15:49,679 INFO L226 Difference]: Without dead ends: 51 [2024-11-14 05:15:49,680 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 [2024-11-14 05:15:49,681 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:49,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:15:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-14 05:15:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-14 05:15:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 05:15:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-14 05:15:49,702 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 35 [2024-11-14 05:15:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:49,703 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-14 05:15:49,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 05:15:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-14 05:15:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 05:15:49,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:49,704 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:15:49,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:15:49,705 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:49,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1131286824, now seen corresponding path program 1 times [2024-11-14 05:15:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591931099] [2024-11-14 05:15:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:15:50,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591931099] [2024-11-14 05:15:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591931099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962471563] [2024-11-14 05:15:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:50,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:50,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:50,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:15:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:50,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:50,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:15:50,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:15:50,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962471563] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:50,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:15:50,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 10 [2024-11-14 05:15:50,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670223836] [2024-11-14 05:15:50,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:15:50,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:15:50,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:50,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:15:50,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:15:50,957 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-14 05:15:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:51,082 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2024-11-14 05:15:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:15:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36 [2024-11-14 05:15:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:51,085 INFO L225 Difference]: With dead ends: 82 [2024-11-14 05:15:51,086 INFO L226 Difference]: Without dead ends: 54 [2024-11-14 05:15:51,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:15:51,087 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:51,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 148 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:15:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-14 05:15:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-11-14 05:15:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 05:15:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-11-14 05:15:51,104 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 36 [2024-11-14 05:15:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:51,104 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-11-14 05:15:51,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-14 05:15:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-11-14 05:15:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:15:51,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:51,106 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:15:51,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:51,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:51,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:51,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1013547527, now seen corresponding path program 1 times [2024-11-14 05:15:51,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722771308] [2024-11-14 05:15:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:15:51,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:51,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722771308] [2024-11-14 05:15:51,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722771308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:15:51,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:15:51,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:15:51,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352457913] [2024-11-14 05:15:51,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:15:51,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:15:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:15:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:15:51,991 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-14 05:15:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:52,201 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2024-11-14 05:15:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:15:52,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 37 [2024-11-14 05:15:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:52,204 INFO L225 Difference]: With dead ends: 62 [2024-11-14 05:15:52,204 INFO L226 Difference]: Without dead ends: 60 [2024-11-14 05:15:52,204 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 [2024-11-14 05:15:52,205 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:52,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 247 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:15:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-14 05:15:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-14 05:15:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-14 05:15:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-14 05:15:52,220 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 37 [2024-11-14 05:15:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:52,221 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-14 05:15:52,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-14 05:15:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-14 05:15:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 05:15:52,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:52,222 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:15:52,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:15:52,222 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:52,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:52,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1552014108, now seen corresponding path program 1 times [2024-11-14 05:15:52,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:52,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707892523] [2024-11-14 05:15:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:15:52,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:52,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707892523] [2024-11-14 05:15:52,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707892523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:52,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581775170] [2024-11-14 05:15:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:52,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:52,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:52,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:52,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:15:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:53,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 05:15:53,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:15:53,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:15:53,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581775170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:53,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1118901572] [2024-11-14 05:15:53,731 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-14 05:15:53,731 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:15:53,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:15:53,742 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:15:53,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:15:54,174 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 208 for LOIs [2024-11-14 05:15:59,888 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 107 for LOIs [2024-11-14 05:16:00,049 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 15 for LOIs [2024-11-14 05:16:00,053 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 101 for LOIs [2024-11-14 05:16:00,619 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 200 for LOIs [2024-11-14 05:16:00,735 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 99 for LOIs [2024-11-14 05:16:00,979 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 242 for LOIs [2024-11-14 05:16:01,273 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:16:21,197 WARN L286 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 242 DAG size of output: 222 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:16:29,962 WARN L286 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 242 DAG size of output: 221 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:16:42,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1403#(and (<= 1 |#StackHeapBarrier|) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15| Int) (|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_7| Int)) (and (or (and (exists ((|v_#Ultimate.C_memset_#t~loopctr688_22| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr688_22|) (<= 16 (mod |v_#Ultimate.C_memset_#t~loopctr688_22| 18446744073709551616)))) (exists ((v_aws_is_mem_zeroed_~i~0_29 Int) (v_aws_is_mem_zeroed_~bufsize_20 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_29) (<= (mod v_aws_is_mem_zeroed_~bufsize_20 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_29 18446744073709551616)))) (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_7|) (exists ((|v_#memory_real_19| (Array Int (Array Int Real))) (|v_#memory_int_21| (Array Int (Array Int Int))) (|v_#memory_int_67| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_56| (Array Int (Array Int Int))) (|v_#memory_real_65| (Array Int (Array Int Real))) (|v_old(#memory_int)_AFTER_CALL_6| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_56| (Array Int (Array Int Int))) (|v_old(#memory_real)_AFTER_CALL_6| (Array Int (Array Int Real)))) (and (= (store |v_#memory_int_21| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) (store (select |v_#memory_int_21| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8) (select (select |v_old(#memory_int)_AFTER_CALL_6| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8)))) |v_old(#memory_int)_AFTER_CALL_6|) (= |v_#memory_int_21| (store |v_#memory_int_67| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_int_67| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_int_21| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8))))) (= (store |v_#memory_real_65| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_real_65| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_real_19| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)))) |v_#memory_real_19|) (= |v_old(#memory_real)_AFTER_CALL_6| (store |v_#memory_real_19| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) (store (select |v_#memory_real_19| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8) (select (select |v_old(#memory_real)_AFTER_CALL_6| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8)))))))) (and (exists ((|v_#Ultimate.C_memset_#t~loopctr688_22| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr688_22|) (<= 16 (mod |v_#Ultimate.C_memset_#t~loopctr688_22| 18446744073709551616)))) (exists ((|v_#memory_real_19| (Array Int (Array Int Real))) (|v_#memory_int_21| (Array Int (Array Int Int))) (|v_#memory_int_67| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_5| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_56| (Array Int (Array Int Int))) (|v_#memory_real_65| (Array Int (Array Int Real))) (|v_#memory_$Pointer$.base_56| (Array Int (Array Int Int))) (|v_old(#memory_real)_AFTER_CALL_5| (Array Int (Array Int Real)))) (and (= (store |v_#memory_int_21| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) (store (select |v_#memory_int_21| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8) (select (select |v_old(#memory_int)_AFTER_CALL_5| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8)))) |v_old(#memory_int)_AFTER_CALL_5|) (= |v_#memory_int_21| (store |v_#memory_int_67| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_int_67| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_int_21| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8))))) (= |v_old(#memory_real)_AFTER_CALL_5| (store |v_#memory_real_19| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) (store (select |v_#memory_real_19| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8) (select (select |v_old(#memory_real)_AFTER_CALL_5| (select (select (store |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.base_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_$Pointer$.offset_56| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0))) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 0) 8))))) (= (store |v_#memory_real_65| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (store (select |v_#memory_real_65| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8) (select (select |v_#memory_real_19| (select (select |v_#memory_$Pointer$.base_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)) (select (select |v_#memory_$Pointer$.offset_56| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|) 8)))) |v_#memory_real_19|))) (exists ((v_aws_is_mem_zeroed_~i~0_29 Int) (v_aws_is_mem_zeroed_~bufsize_20 Int)) (and (<= 0 v_aws_is_mem_zeroed_~i~0_29) (<= (mod v_aws_is_mem_zeroed_~bufsize_20 18446744073709551616) (mod v_aws_is_mem_zeroed_~i~0_29 18446744073709551616)))) (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_7|))) (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_15|))) (= |__VERIFIER_assert_#in~cond| 0) (= ~tl_last_error~0 0))' at error location [2024-11-14 05:16:42,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:16:42,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:42,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 11 [2024-11-14 05:16:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286865375] [2024-11-14 05:16:42,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:42,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:16:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:16:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1027, Unknown=6, NotChecked=0, Total=1122 [2024-11-14 05:16:42,473 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 05:16:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:42,908 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2024-11-14 05:16:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:16:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 38 [2024-11-14 05:16:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:42,910 INFO L225 Difference]: With dead ends: 119 [2024-11-14 05:16:42,910 INFO L226 Difference]: Without dead ends: 72 [2024-11-14 05:16:42,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=97, Invalid=1087, Unknown=6, NotChecked=0, Total=1190 [2024-11-14 05:16:42,912 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 15 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:42,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 360 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:16:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-14 05:16:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2024-11-14 05:16:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-14 05:16:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-11-14 05:16:42,928 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 38 [2024-11-14 05:16:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:42,928 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-11-14 05:16:42,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 05:16:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-11-14 05:16:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 05:16:42,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:42,930 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:42,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:16:43,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:43,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:43,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash -897096351, now seen corresponding path program 1 times [2024-11-14 05:16:43,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:43,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935760351] [2024-11-14 05:16:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:43,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:16:43,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935760351] [2024-11-14 05:16:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935760351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287952087] [2024-11-14 05:16:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:43,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:43,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:43,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:43,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_235c2848-4e83-4d0f-8941-113a91efd5ca/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:16:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:44,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-14 05:16:44,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:44,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:44,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:44,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2024-11-14 05:16:44,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:44,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 05:16:44,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-14 05:16:44,161 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-14 05:16:44,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:44,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-14 05:16:44,922 INFO L349 Elim1Store]: treesize reduction 172, result has 9.0 percent of original size [2024-11-14 05:16:44,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 606 treesize of output 295 [2024-11-14 05:16:45,001 INFO L349 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2024-11-14 05:16:45,002 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 148 treesize of output 133 [2024-11-14 05:16:45,069 INFO L349 Elim1Store]: treesize reduction 57, result has 37.4 percent of original size [2024-11-14 05:16:45,070 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 2 case distinctions, treesize of input 147 treesize of output 153 [2024-11-14 05:16:45,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:45,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 72 [2024-11-14 05:16:45,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 05:16:45,204 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 37 [2024-11-14 05:16:45,256 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-14 05:16:45,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 60 [2024-11-14 05:16:45,300 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 11 treesize of output 7 [2024-11-14 05:16:45,421 INFO L349 Elim1Store]: treesize reduction 52, result has 40.9 percent of original size [2024-11-14 05:16:45,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 61 [2024-11-14 05:16:45,533 INFO L349 Elim1Store]: treesize reduction 34, result has 27.7 percent of original size [2024-11-14 05:16:45,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 39 [2024-11-14 05:16:48,211 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse0 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (and (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| (select .cse0 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|)) (exists ((v_arrayElimCell_12 Int)) (let ((.cse1 (select .cse0 (+ 8 v_arrayElimCell_12)))) (and (not (= .cse1 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (<= 2 .cse1) (= (select .cse0 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8)) .cse1))))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse3 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (let ((.cse2 (select .cse3 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8)))) (and (not (= .cse2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (<= 2 .cse2) (exists ((v_arrayElimCell_12 Int)) (= (select |c_#memory_$Pointer$.base| (select .cse3 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|)) (store .cse3 (+ 8 v_arrayElimCell_12) .cse2))))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse5 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (and (exists ((v_arrayElimCell_12 Int)) (let ((.cse4 (select .cse5 (+ 8 v_arrayElimCell_12)))) (and (not (= .cse4 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (<= 2 .cse4) (not (= |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| v_arrayElimCell_12)) (= (select .cse5 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8)) .cse4)))) (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| (select .cse5 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse8 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (let ((.cse6 (select .cse8 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8))) (.cse7 (select .cse8 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|))) (and (exists ((v_prenex_3 Int)) (= .cse6 (select (select |c_#memory_$Pointer$.base| .cse7) (+ 8 v_prenex_3)))) (not (= .cse6 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (<= 2 .cse6) (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| .cse7)))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (let ((.cse10 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (and (exists ((v_arrayElimCell_12 Int) (|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse9 (select .cse10 (+ 8 v_arrayElimCell_12)))) (and (not (= .cse9 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (<= 2 .cse9) (= (select .cse10 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8)) .cse9) (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| (select .cse10 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|))))) (exists ((v_arrayElimCell_11 Int)) (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| (select .cse10 v_arrayElimCell_11))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse11 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (let ((.cse12 (select .cse11 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|))) (and (= (select .cse11 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8)) .cse12) (<= 2 .cse12) (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| .cse12)))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse15 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (let ((.cse13 (select .cse15 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8)))) (and (not (= .cse13 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (exists ((v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse14 (select .cse15 v_arrayElimCell_11))) (and (= (select |c_#memory_$Pointer$.base| .cse14) (store .cse15 (+ 8 v_arrayElimCell_12) .cse13)) (= (select .cse15 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|) .cse14)))) (<= 2 .cse13))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| Int)) (let ((.cse18 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|))) (let ((.cse16 (select .cse18 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27| 8))) (.cse17 (select .cse18 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_27|))) (and (exists ((v_arrayElimCell_12 Int)) (= .cse16 (select (select |c_#memory_$Pointer$.base| .cse17) (+ 8 v_arrayElimCell_12)))) (not (= .cse16 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)) (<= 2 .cse16) (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11| .cse17)))))) (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_11|)))) is different from true [2024-11-14 05:17:01,033 INFO L349 Elim1Store]: treesize reduction 1596, result has 13.0 percent of original size [2024-11-14 05:17:01,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 23 new quantified variables, introduced 133 case distinctions, treesize of input 772 treesize of output 856 [2024-11-14 05:18:47,531 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 524 DAG size of output: 524 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:18:56,222 WARN L286 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 511 DAG size of output: 510 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:19:39,917 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 521 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:22:30,343 WARN L286 SmtUtils]: Spent 52.61s on a formula simplification. DAG size of input: 862 DAG size of output: 862 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:23:00,469 WARN L286 SmtUtils]: Spent 16.82s on a formula simplification that was a NOOP. DAG size: 854 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:23:17,113 WARN L286 SmtUtils]: Spent 16.63s on a formula simplification that was a NOOP. DAG size: 1461 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:25:03,129 WARN L286 SmtUtils]: Spent 14.61s on a formula simplification that was a NOOP. DAG size: 855 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:25:31,184 WARN L286 SmtUtils]: Spent 28.05s on a formula simplification that was a NOOP. DAG size: 858 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:26:12,742 WARN L286 SmtUtils]: Spent 26.62s on a formula simplification. DAG size of input: 849 DAG size of output: 848 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:27:55,542 WARN L286 SmtUtils]: Spent 15.02s on a formula simplification that was a NOOP. DAG size: 1460 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)