./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91 --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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:12,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:13,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:16:13,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:13,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:13,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:13,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:13,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:13,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:13,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:13,188 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:13,188 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:13,189 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:13,190 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:13,192 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:13,192 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:13,193 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:13,193 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:13,194 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:13,194 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:13,195 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:13,195 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:13,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:13,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:13,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:13,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:13,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:13,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:13,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:13,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:13,201 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:13,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:13,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:13,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:13,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:13,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:13,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:13,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:13,204 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:13,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:13,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:13,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:13,205 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:13,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:13,206 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2023-11-24 23:16:13,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:13,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:13,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:13,616 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:13,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:13,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2023-11-24 23:16:16,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:17,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:17,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2023-11-24 23:16:17,386 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/data/27467e40c/a0e8290db3f04c6895e5f10e5db02f24/FLAG6547ae4b4 [2023-11-24 23:16:17,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/data/27467e40c/a0e8290db3f04c6895e5f10e5db02f24 [2023-11-24 23:16:17,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:17,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:17,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:17,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:17,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:17,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:17,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dedb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17, skipping insertion in model container [2023-11-24 23:16:17,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:17,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:17,896 WARN L240 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_83c1965b-28d2-4be4-a39c-2d633715d90f/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2023-11-24 23:16:17,904 WARN L240 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_83c1965b-28d2-4be4-a39c-2d633715d90f/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2023-11-24 23:16:18,994 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:18,995 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:18,996 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:18,997 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:18,998 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,015 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,016 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,019 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,022 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,026 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:19,620 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:16:19,621 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:16:19,622 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:16:19,637 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:16:19,639 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:16:19,640 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:16:19,640 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:16:19,641 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:16:19,642 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:16:19,643 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:16:19,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:19,957 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:19,980 WARN L240 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_83c1965b-28d2-4be4-a39c-2d633715d90f/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2023-11-24 23:16:19,981 WARN L240 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_83c1965b-28d2-4be4-a39c-2d633715d90f/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2023-11-24 23:16:20,056 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,059 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,059 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,079 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:20,152 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:16:20,153 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:16:20,154 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:16:20,155 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:16:20,159 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:16:20,159 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:16:20,160 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:16:20,161 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:16:20,163 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:16:20,164 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:16:20,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:20,407 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,407 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,407 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,407 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,407 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,408 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,408 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,408 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,408 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,408 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,408 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,409 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,409 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,409 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,409 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,409 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:20,417 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:20,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20 WrapperNode [2023-11-24 23:16:20,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:20,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:20,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:20,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:20,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,548 INFO L138 Inliner]: procedures = 678, calls = 1041, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 141 [2023-11-24 23:16:20,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:20,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:20,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:20,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:20,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:20,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:20,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:20,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:20,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:20,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:20,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:20,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:16:20,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:16:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-24 23:16:20,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-24 23:16:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-24 23:16:20,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-24 23:16:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:20,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:20,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:16:20,748 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:16:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:21,081 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:21,083 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:21,378 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:21,539 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:21,539 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:16:21,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:21 BoogieIcfgContainer [2023-11-24 23:16:21,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:21,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:21,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:21,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:21,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:17" (1/3) ... [2023-11-24 23:16:21,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eae45c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:21, skipping insertion in model container [2023-11-24 23:16:21,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20" (2/3) ... [2023-11-24 23:16:21,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eae45c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:21, skipping insertion in model container [2023-11-24 23:16:21,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:21" (3/3) ... [2023-11-24 23:16:21,561 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2023-11-24 23:16:21,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:21,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:16:21,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:21,659 INFO L357 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, mHoare=true, 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;@328d0ffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:21,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:16:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:16:21,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:16:21,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:21,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-24 23:16:21,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash -506232321, now seen corresponding path program 1 times [2023-11-24 23:16:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:21,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275371448] [2023-11-24 23:16:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:16:22,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275371448] [2023-11-24 23:16:22,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275371448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:22,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55305127] [2023-11-24 23:16:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:22,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:22,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:22,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:16:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:22,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-24 23:16:23,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:23,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 23:16:23,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 23:16:23,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2023-11-24 23:16:23,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-11-24 23:16:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:16:26,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:26,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55305127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:26,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:16:26,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2023-11-24 23:16:26,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685074827] [2023-11-24 23:16:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:26,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:16:26,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:16:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:16:26,488 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-24 23:16:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:27,184 INFO L93 Difference]: Finished difference Result 124 states and 173 transitions. [2023-11-24 23:16:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:16:27,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 37 [2023-11-24 23:16:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:27,196 INFO L225 Difference]: With dead ends: 124 [2023-11-24 23:16:27,197 INFO L226 Difference]: Without dead ends: 81 [2023-11-24 23:16:27,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:16:27,204 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 33 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:27,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 244 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:16:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-24 23:16:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-11-24 23:16:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.288888888888889) internal successors, (58), 47 states have internal predecessors, (58), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 23:16:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-11-24 23:16:27,263 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 37 [2023-11-24 23:16:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:27,264 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-11-24 23:16:27,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-24 23:16:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-11-24 23:16:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:16:27,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:27,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-24 23:16:27,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:27,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:16:27,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:27,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1923609863, now seen corresponding path program 1 times [2023-11-24 23:16:27,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:27,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463473005] [2023-11-24 23:16:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:27,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:16:27,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463473005] [2023-11-24 23:16:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463473005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:16:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623472194] [2023-11-24 23:16:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:27,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:27,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:27,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:27,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:16:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:27,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-24 23:16:27,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:28,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 23:16:28,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 23:16:28,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-24 23:16:28,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:28,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-24 23:16:28,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-24 23:16:28,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:28,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-24 23:16:28,386 INFO L349 Elim1Store]: treesize reduction 96, result has 23.2 percent of original size [2023-11-24 23:16:28,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 93 [2023-11-24 23:16:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:28,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 21 [2023-11-24 23:16:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:16:29,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:39,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:39,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 388 treesize of output 473 [2023-11-24 23:16:40,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:40,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 364 treesize of output 449 [2023-11-24 23:16:41,456 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-24 23:16:41,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-24 23:16:41,504 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-24 23:16:41,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-24 23:16:41,576 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-24 23:16:41,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-24 23:16:41,629 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-24 23:16:41,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-24 23:16:41,767 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-24 23:16:41,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-24 23:16:41,848 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-24 23:16:41,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-24 23:16:43,589 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-24 23:16:43,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 189 [2023-11-24 23:16:43,763 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:43,764 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:43,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:43,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:43,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2023-11-24 23:16:43,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:43,817 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:16:43,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 71 [2023-11-24 23:16:43,993 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-24 23:16:43,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 189 [2023-11-24 23:16:44,437 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-24 23:16:44,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 109 [2023-11-24 23:16:44,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:44,694 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:16:44,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 114 [2023-11-24 23:16:44,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:44,708 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:44,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:44,735 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 23:16:44,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2023-11-24 23:16:44,829 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-24 23:16:44,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 61 [2023-11-24 23:16:47,442 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-24 23:16:47,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 189 [2023-11-24 23:16:47,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:47,881 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 23:16:47,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 1 [2023-11-24 23:16:47,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:47,930 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 23:16:47,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 19 [2023-11-24 23:16:48,030 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 23:16:48,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2023-11-24 23:16:48,126 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 6 treesize of output 4 [2023-11-24 23:16:48,167 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 20 treesize of output 18 [2023-11-24 23:16:48,209 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 20 treesize of output 18 [2023-11-24 23:16:48,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-24 23:16:48,304 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 38 treesize of output 36 [2023-11-24 23:16:48,314 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 20 treesize of output 18 [2023-11-24 23:16:48,334 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 20 treesize of output 18 [2023-11-24 23:16:48,374 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 23:16:48,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 4 [2023-11-24 23:16:48,437 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 20 treesize of output 18 [2023-11-24 23:16:48,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 18 [2023-11-24 23:16:48,599 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 20 treesize of output 18 [2023-11-24 23:16:48,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-24 23:16:48,787 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2023-11-24 23:16:48,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 130 treesize of output 121 [2023-11-24 23:16:48,871 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 6 treesize of output 4 [2023-11-24 23:16:48,931 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 20 treesize of output 18 [2023-11-24 23:16:48,949 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 23 treesize of output 21 [2023-11-24 23:16:48,979 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 20 treesize of output 18 [2023-11-24 23:16:49,049 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-11-24 23:16:49,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 40 [2023-11-24 23:16:49,090 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 20 treesize of output 18 [2023-11-24 23:16:49,130 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 20 treesize of output 18 [2023-11-24 23:16:49,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 4 [2023-11-24 23:16:50,002 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse12 (+ 16 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|)) (.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse6 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse8 (+ 8 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|))) (and (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_DerPreprocessor_77 Int) (v_DerPreprocessor_78 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (v_subst_6 Int) (v_subst_2 Int) (v_subst_1 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse0 (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_77)) (.cse1 (store (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_15) v_subst_2 v_DerPreprocessor_16))) (or (not (= (store (store .cse0 v_subst_6 (select .cse1 v_subst_6)) v_subst_2 v_DerPreprocessor_16) .cse1)) (not (= (select v_arrayElimArr_9 v_subst_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (not (= (select (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= v_DerPreprocessor_77 (select (store .cse0 v_subst_6 v_DerPreprocessor_78) v_subst_1))) (not (= v_DerPreprocessor_15 (select .cse1 v_subst_1))) (not (= (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0))))))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_subst_6 Int) (v_subst_4 Int) (v_subst_1 Int) (v_DerPreprocessor_84 Int) (v_DerPreprocessor_41 Int)) (let ((.cse10 (store v_arrayElimArr_10 v_subst_4 v_DerPreprocessor_84))) (let ((.cse9 (store (store .cse10 v_subst_6 v_DerPreprocessor_41) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|))) (or (= v_subst_4 v_subst_1) (= (select (select (let ((.cse7 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_41 (select .cse9 v_subst_6))) (not (= v_DerPreprocessor_84 (select (store .cse10 v_subst_6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_4))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_4))) (not (= .cse9 (store (store v_arrayElimArr_10 v_subst_4 (select .cse9 v_subst_4)) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|))))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_7 (Array Int Int)) (v_subst_6 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_7 v_subst_6))) (= (select (select (let ((.cse11 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_7))) (store .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse12) 0) (forall ((v_DerPreprocessor_50 Int) (v_subst_1 Int)) (not (= v_DerPreprocessor_50 (select (store (store v_arrayElimArr_7 v_subst_6 v_DerPreprocessor_50) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_6)))))))) (or (not (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 0))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_2 Int) (v_DerPreprocessor_75 Int) (v_subst_1 Int) (v_DerPreprocessor_76 Int)) (let ((.cse14 (store (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14)) (.cse15 (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_75))) (or (= (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_13 (select .cse14 v_subst_1))) (not (= (store (store .cse15 v_subst_6 (select .cse14 v_subst_6)) v_subst_2 v_DerPreprocessor_14) .cse14)) (not (= v_DerPreprocessor_75 (select (store .cse15 v_subst_6 v_DerPreprocessor_76) v_subst_1)))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_5 Int) (v_subst_2 Int) (v_DerPreprocessor_73 Int) (v_DerPreprocessor_74 Int)) (or (= (select (select (let ((.cse16 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse16 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse16 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_73 (select (store (store v_arrayElimArr_6 v_subst_2 v_DerPreprocessor_73) v_subst_5 v_DerPreprocessor_74) v_subst_2))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_DerPreprocessor_77 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_DerPreprocessor_78 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (v_subst_5 Int) (v_subst_2 Int) (v_subst_1 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse17 (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_77)) (.cse18 (store (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_15) v_subst_2 v_DerPreprocessor_16))) (or (not (= v_DerPreprocessor_77 (select (store .cse17 v_subst_5 v_DerPreprocessor_78) v_subst_1))) (not (= (store (store .cse17 v_subst_5 (select .cse18 v_subst_5)) v_subst_2 v_DerPreprocessor_16) .cse18)) (not (= (select v_arrayElimArr_9 v_subst_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (not (= (select (select (let ((.cse19 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse19 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse19 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= v_DerPreprocessor_15 (select .cse18 v_subst_1))) (not (= (select (select (let ((.cse20 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_DerPreprocessor_39 Int) (v_subst_6 Int) (v_subst_5 Int) (v_DerPreprocessor_86 Int) (v_subst_1 Int)) (let ((.cse21 (store (store v_arrayElimArr_10 v_subst_5 v_DerPreprocessor_39) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (.cse22 (store v_arrayElimArr_10 v_subst_5 v_DerPreprocessor_86))) (or (not (= (select .cse21 v_subst_5) v_DerPreprocessor_39)) (not (= (store (store .cse22 v_subst_6 (select .cse21 v_subst_6)) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse21)) (= (select (select (let ((.cse23 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse23 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse23 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_86 (select (store .cse22 v_subst_6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_5))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_5)))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_69 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_DerPreprocessor_71 Int) (v_subst_5 Int) (v_DerPreprocessor_72 Int) (v_subst_3 Int) (v_DerPreprocessor_70 Int) (v_subst_2 Int) (v_subst_1 Int)) (let ((.cse25 (store (store (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_69) v_subst_2 v_DerPreprocessor_70) v_subst_1 v_DerPreprocessor_71) v_subst_5 v_DerPreprocessor_72))) (or (= v_subst_3 v_subst_2) (= (select (select (let ((.cse24 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse24 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse24 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= .cse25 (store (store v_arrayElimArr_6 v_subst_3 (select .cse25 v_subst_3)) v_subst_5 v_DerPreprocessor_72))) (= v_subst_5 v_subst_3) (not (= (select .cse25 v_subst_1) v_DerPreprocessor_71)) (not (= v_DerPreprocessor_70 (select .cse25 v_subst_2))) (= v_subst_3 v_subst_1)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_2 Int)) (or (= (select (select (let ((.cse26 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse26 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse26 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_13 (select (store (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14) v_subst_6))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (let ((.cse28 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 24))) (or (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_arrayElimArr_3 (Array Int Int)) (v_prenex_1 Int)) (not (= (select (select (let ((.cse27 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_3))) (store .cse27 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse27 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse28) 0))) (= v_ArrVal_175 0) (forall ((v_arrayElimArr_8 (Array Int Int)) (v_subst_5 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_5))) (not (= (select (select (let ((.cse29 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse29 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse29 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse28) 0)))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_5 Int) (v_DerPreprocessor_75 Int) (v_subst_2 Int) (v_subst_1 Int) (v_DerPreprocessor_76 Int)) (let ((.cse31 (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_75)) (.cse32 (store (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14))) (or (= (select (select (let ((.cse30 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse30 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse30 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_75 (select (store .cse31 v_subst_5 v_DerPreprocessor_76) v_subst_1))) (not (= v_DerPreprocessor_13 (select .cse32 v_subst_1))) (not (= (store (store .cse31 v_subst_5 (select .cse32 v_subst_5)) v_subst_2 v_DerPreprocessor_14) .cse32))))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_2 Int) (v_DerPreprocessor_73 Int) (v_DerPreprocessor_74 Int)) (or (= (select (select (let ((.cse33 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse33 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse33 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= (select (store (store v_arrayElimArr_6 v_subst_2 v_DerPreprocessor_73) v_subst_6 v_DerPreprocessor_74) v_subst_2) v_DerPreprocessor_73)))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_5 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_ArrVal_182 Int)) (= (select (select (let ((.cse34 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_5))) (store .cse34 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse34 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_182))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse12) 0)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_DerPreprocessor_77 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_DerPreprocessor_78 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (v_subst_6 Int) (v_subst_5 Int) (v_subst_2 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse36 (store v_arrayElimArr_4 v_subst_6 v_DerPreprocessor_77)) (.cse35 (store (store v_arrayElimArr_4 v_subst_6 v_DerPreprocessor_15) v_subst_2 v_DerPreprocessor_16))) (or (not (= (select .cse35 v_subst_6) v_DerPreprocessor_15)) (not (= v_DerPreprocessor_77 (select (store .cse36 v_subst_5 v_DerPreprocessor_78) v_subst_6))) (not (= (select (select (let ((.cse37 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse37 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse37 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= (select (select (let ((.cse38 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse38 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse38 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= (select v_arrayElimArr_9 v_subst_6) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (not (= (store (store .cse36 v_subst_5 (select .cse35 v_subst_5)) v_subst_2 v_DerPreprocessor_16) .cse35))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_DerPreprocessor_29 Int) (v_subst_5 Int) (v_subst_1 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_1))) (= (select (select (let ((.cse39 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse39 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse39 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_29 (select (store (store v_arrayElimArr_10 v_subst_1 v_DerPreprocessor_29) v_subst_5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_1))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_5 Int) (v_DerPreprocessor_75 Int) (v_subst_2 Int) (v_DerPreprocessor_76 Int)) (let ((.cse41 (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_75)) (.cse42 (store (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14))) (or (= (select (select (let ((.cse40 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse40 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse40 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_75 (select (store .cse41 v_subst_5 v_DerPreprocessor_76) v_subst_6))) (not (= v_DerPreprocessor_13 (select .cse42 v_subst_6))) (not (= .cse42 (store (store .cse41 v_subst_5 (select .cse42 v_subst_5)) v_subst_2 v_DerPreprocessor_14)))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_69 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_DerPreprocessor_71 Int) (v_subst_5 Int) (v_DerPreprocessor_72 Int) (v_subst_3 Int) (v_DerPreprocessor_70 Int) (v_subst_2 Int)) (let ((.cse44 (store (store (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_69) v_subst_2 v_DerPreprocessor_70) v_subst_6 v_DerPreprocessor_71) v_subst_5 v_DerPreprocessor_72))) (or (= v_subst_3 v_subst_2) (= (select (select (let ((.cse43 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse43 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse43 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_70 (select .cse44 v_subst_2))) (not (= v_DerPreprocessor_71 (select .cse44 v_subst_6))) (not (= (store (store v_arrayElimArr_6 v_subst_3 (select .cse44 v_subst_3)) v_subst_5 v_DerPreprocessor_72) .cse44)) (= v_subst_5 v_subst_3) (= v_subst_6 v_subst_3)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_69 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_DerPreprocessor_71 Int) (v_subst_6 Int) (v_DerPreprocessor_72 Int) (v_subst_3 Int) (v_DerPreprocessor_70 Int) (v_subst_2 Int) (v_subst_1 Int)) (let ((.cse46 (store (store (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_69) v_subst_2 v_DerPreprocessor_70) v_subst_1 v_DerPreprocessor_71) v_subst_6 v_DerPreprocessor_72))) (or (= v_subst_3 v_subst_2) (= (select (select (let ((.cse45 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse45 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse45 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= (select .cse46 v_subst_2) v_DerPreprocessor_70)) (not (= (store (store v_arrayElimArr_6 v_subst_3 (select .cse46 v_subst_3)) v_subst_6 v_DerPreprocessor_72) .cse46)) (= v_subst_3 v_subst_1) (not (= v_DerPreprocessor_71 (select .cse46 v_subst_1))) (= v_subst_6 v_subst_3)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_5 Int) (v_subst_2 Int)) (or (= (select (select (let ((.cse47 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse47 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse47 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_13 (select (store (store v_arrayElimArr_6 v_subst_5 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14) v_subst_5))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))))) is different from false [2023-11-24 23:16:52,251 INFO L349 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2023-11-24 23:16:52,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 144 [2023-11-24 23:16:52,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:52,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 172 [2023-11-24 23:16:52,313 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 145 treesize of output 133 [2023-11-24 23:16:52,395 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 8 treesize of output 4 [2023-11-24 23:16:52,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:52,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 83 [2023-11-24 23:16:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,717 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,722 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:52,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 46 [2023-11-24 23:16:52,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2023-11-24 23:16:52,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,765 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 31 treesize of output 29 [2023-11-24 23:16:52,778 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,779 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,788 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-24 23:16:52,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 45 [2023-11-24 23:16:52,804 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,812 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,812 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,819 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,826 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,827 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,831 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-24 23:16:52,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,848 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,854 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,861 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,867 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,875 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,882 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,888 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,900 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-24 23:16:52,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,917 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,922 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,934 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,947 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,948 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,952 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,960 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,969 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,975 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:52,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:52,980 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,984 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-24 23:16:52,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:53,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,007 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:53,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:53,014 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,015 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,019 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-24 23:16:53,024 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:53,030 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,036 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:53,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:53,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:53,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,052 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:53,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:53,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:16:53,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:53,070 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-24 23:16:53,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-24 23:16:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 1 not checked. [2023-11-24 23:16:53,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623472194] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:53,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602884234] [2023-11-24 23:16:53,213 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-24 23:16:53,214 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:16:53,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:16:53,224 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:16:53,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:16:56,134 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 106 for LOIs [2023-11-24 23:16:56,240 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 6 for LOIs [2023-11-24 23:16:56,242 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 95 for LOIs [2023-11-24 23:16:56,261 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:17:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [602884234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:00,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:17:00,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 9, 8] total 28 [2023-11-24 23:17:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352446434] [2023-11-24 23:17:00,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:17:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:17:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=619, Unknown=3, NotChecked=50, Total=756 [2023-11-24 23:17:00,573 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 23:17:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:05,111 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2023-11-24 23:17:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 23:17:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2023-11-24 23:17:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:05,117 INFO L225 Difference]: With dead ends: 144 [2023-11-24 23:17:05,118 INFO L226 Difference]: Without dead ends: 105 [2023-11-24 23:17:05,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=4, NotChecked=60, Total=1056 [2023-11-24 23:17:05,121 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:05,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 258 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 2 Unknown, 0 Unchecked, 2.5s Time] [2023-11-24 23:17:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-24 23:17:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-24 23:17:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.328125) internal successors, (85), 66 states have internal predecessors, (85), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:17:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2023-11-24 23:17:05,164 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 38 [2023-11-24 23:17:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:05,164 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2023-11-24 23:17:05,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 23:17:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2023-11-24 23:17:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:17:05,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:05,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:05,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:05,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:17:05,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:05,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1593721365, now seen corresponding path program 1 times [2023-11-24 23:17:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:05,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045076052] [2023-11-24 23:17:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:05,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:17:05,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045076052] [2023-11-24 23:17:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045076052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:05,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420362049] [2023-11-24 23:17:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:05,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:05,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:17:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:05,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:17:05,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-24 23:17:05,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:05,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420362049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:05,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:05,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-24 23:17:05,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124509851] [2023-11-24 23:17:05,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:05,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:17:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:17:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:17:05,964 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:17:06,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:06,234 INFO L93 Difference]: Finished difference Result 183 states and 239 transitions. [2023-11-24 23:17:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:17:06,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2023-11-24 23:17:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:06,237 INFO L225 Difference]: With dead ends: 183 [2023-11-24 23:17:06,238 INFO L226 Difference]: Without dead ends: 109 [2023-11-24 23:17:06,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:17:06,241 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:06,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 151 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:17:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-24 23:17:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-11-24 23:17:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 72 states have internal predecessors, (87), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2023-11-24 23:17:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2023-11-24 23:17:06,288 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 40 [2023-11-24 23:17:06,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:06,289 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2023-11-24 23:17:06,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:17:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2023-11-24 23:17:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:17:06,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:06,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:06,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 23:17:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83c1965b-28d2-4be4-a39c-2d633715d90f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:06,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:06,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 500315867, now seen corresponding path program 1 times [2023-11-24 23:17:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091046673] [2023-11-24 23:17:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:06,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat