./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_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_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh --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 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:52:07,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:52:07,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:52:07,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:52:07,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:52:07,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:52:07,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:52:07,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:52:07,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:52:07,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:52:07,984 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:52:07,984 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:52:07,985 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:52:07,985 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:52:07,986 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:52:07,986 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:52:07,987 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:52:07,987 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:52:07,988 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:52:07,988 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:52:07,989 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:52:07,990 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:52:07,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:52:07,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:52:07,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:52:07,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:52:07,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:52:07,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:52:07,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:52:07,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:52:07,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:52:07,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:52:07,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:52:07,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:52:07,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:07,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:52:07,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:52:07,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:52:07,996 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:52:07,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:52:07,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:52:07,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:52:07,997 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:52:07,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:52:07,997 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_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2023-12-02 13:52:08,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:52:08,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:52:08,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:52:08,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:52:08,253 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:52:08,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2023-12-02 13:52:10,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:52:11,338 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:52:11,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2023-12-02 13:52:11,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data/12c35486a/ce8b1a2326d446179bd72408db938970/FLAGc3c217096 [2023-12-02 13:52:11,381 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data/12c35486a/ce8b1a2326d446179bd72408db938970 [2023-12-02 13:52:11,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:52:11,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:52:11,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:11,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:52:11,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:52:11,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:11" (1/1) ... [2023-12-02 13:52:11,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f24349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:11, skipping insertion in model container [2023-12-02 13:52:11,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:11" (1/1) ... [2023-12-02 13:52:11,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:52:11,729 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2023-12-02 13:52:11,738 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2023-12-02 13:52:12,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,595 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:12,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,015 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:52:13,016 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:52:13,018 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:52:13,019 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:52:13,020 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:52:13,021 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:52:13,022 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:52:13,023 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:52:13,024 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:52:13,024 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:52:13,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:13,231 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:52:13,259 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2023-12-02 13:52:13,260 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2023-12-02 13:52:13,306 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,308 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,319 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,320 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,321 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,322 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:13,364 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:52:13,365 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:52:13,366 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:52:13,367 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:52:13,369 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:52:13,369 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:52:13,370 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:52:13,371 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:52:13,371 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:52:13,372 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:52:13,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:13,621 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,622 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,622 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,622 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,622 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,622 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,622 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,623 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,623 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,623 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,623 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,623 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,624 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,624 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,624 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:13,639 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:52:13,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13 WrapperNode [2023-12-02 13:52:13,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:13,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:52:13,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:52:13,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:52:13,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,743 INFO L138 Inliner]: procedures = 678, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 76 [2023-12-02 13:52:13,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:52:13,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:52:13,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:52:13,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:52:13,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:52:13,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:52:13,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:52:13,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:52:13,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (1/1) ... [2023-12-02 13:52:13,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:13,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:13,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:52:13,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:52:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:52:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:52:13,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:52:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-12-02 13:52:13,856 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-12-02 13:52:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:52:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:52:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:52:13,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:52:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:52:13,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:52:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:52:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:52:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:52:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-12-02 13:52:13,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-12-02 13:52:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:52:14,049 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:52:14,051 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:52:14,220 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:52:14,296 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:52:14,296 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:52:14,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:52:14 BoogieIcfgContainer [2023-12-02 13:52:14,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:52:14,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:52:14,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:52:14,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:52:14,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:52:11" (1/3) ... [2023-12-02 13:52:14,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2ee1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:52:14, skipping insertion in model container [2023-12-02 13:52:14,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:13" (2/3) ... [2023-12-02 13:52:14,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2ee1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:52:14, skipping insertion in model container [2023-12-02 13:52:14,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:52:14" (3/3) ... [2023-12-02 13:52:14,307 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2023-12-02 13:52:14,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:52:14,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:52:14,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:52:14,383 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;@584be68a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:52:14,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:52:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:52:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 13:52:14,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:14,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:52:14,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:52:14,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -989440254, now seen corresponding path program 1 times [2023-12-02 13:52:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:14,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417116177] [2023-12-02 13:52:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:52:16,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:16,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417116177] [2023-12-02 13:52:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417116177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:52:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:52:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 13:52:16,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541550336] [2023-12-02 13:52:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:52:16,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:52:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:52:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:52:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:52:16,956 INFO L87 Difference]: Start difference. First operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:52:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:52:17,326 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2023-12-02 13:52:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:52:17,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2023-12-02 13:52:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:52:17,334 INFO L225 Difference]: With dead ends: 86 [2023-12-02 13:52:17,334 INFO L226 Difference]: Without dead ends: 48 [2023-12-02 13:52:17,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:52:17,340 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 9 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:52:17,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 244 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:52:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-02 13:52:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-02 13:52:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:52:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-12-02 13:52:17,380 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2023-12-02 13:52:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:52:17,381 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-12-02 13:52:17,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:52:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-12-02 13:52:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 13:52:17,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:17,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:52:17,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:52:17,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:52:17,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 473962202, now seen corresponding path program 1 times [2023-12-02 13:52:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316362065] [2023-12-02 13:52:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:52:19,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:19,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316362065] [2023-12-02 13:52:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316362065] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:52:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866592957] [2023-12-02 13:52:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:19,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:52:19,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:19,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:52:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:52:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:19,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-02 13:52:19,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:52:19,751 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:52:19,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 101 [2023-12-02 13:52:19,773 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:52:19,774 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:52:19,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2023-12-02 13:52:19,783 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 5 treesize of output 3 [2023-12-02 13:52:19,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 56 [2023-12-02 13:52:19,821 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-12-02 13:52:19,821 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 55 [2023-12-02 13:52:19,858 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 16 treesize of output 13 [2023-12-02 13:52:19,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2023-12-02 13:52:19,891 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:52:19,900 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-12-02 13:52:19,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 129 treesize of output 120 [2023-12-02 13:52:19,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:52:19,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:52:19,910 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 45 treesize of output 35 [2023-12-02 13:52:19,969 INFO L349 Elim1Store]: treesize reduction 60, result has 41.2 percent of original size [2023-12-02 13:52:19,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 115 [2023-12-02 13:52:20,006 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 188 treesize of output 172 [2023-12-02 13:52:20,016 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 160 [2023-12-02 13:52:20,029 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 150 treesize of output 139 [2023-12-02 13:52:20,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 126 treesize of output 108 [2023-12-02 13:52:20,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no need to replace index [2023-12-02 13:52:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1843727895] [2023-12-02 13:52:20,281 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 13:52:20,281 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:52:20,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:52:20,290 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:52:20,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:52:20,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:52:20,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:52:20,528 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Script currently locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6104ebc7 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.assertScriptNotLocked(ManagedScript.java:109) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:282) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminateLight(PartialQuantifierElimination.java:62) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$TermDomainOperationProviderWithLightElimination.newQuantifier(SymbolicTools.java:284) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$TermDomainOperationProviderWithLightElimination.projectExistentially(SymbolicTools.java:270) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:117) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 13:52:20,531 INFO L158 Benchmark]: Toolchain (without parser) took 9146.34ms. Allocated memory was 151.0MB in the beginning and 310.4MB in the end (delta: 159.4MB). Free memory was 103.8MB in the beginning and 209.4MB in the end (delta: -105.6MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-12-02 13:52:20,531 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:52:20,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2254.09ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 103.8MB in the beginning and 169.6MB in the end (delta: -65.8MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2023-12-02 13:52:20,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.69ms. Allocated memory is still 213.9MB. Free memory was 169.6MB in the beginning and 164.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 13:52:20,533 INFO L158 Benchmark]: Boogie Preprocessor took 39.64ms. Allocated memory is still 213.9MB. Free memory was 164.4MB in the beginning and 162.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:52:20,533 INFO L158 Benchmark]: RCFGBuilder took 513.87ms. Allocated memory is still 213.9MB. Free memory was 162.3MB in the beginning and 131.8MB in the end (delta: 30.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 13:52:20,534 INFO L158 Benchmark]: TraceAbstraction took 6229.72ms. Allocated memory was 213.9MB in the beginning and 310.4MB in the end (delta: 96.5MB). Free memory was 130.8MB in the beginning and 209.4MB in the end (delta: -78.6MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-12-02 13:52:20,536 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2254.09ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 103.8MB in the beginning and 169.6MB in the end (delta: -65.8MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.69ms. Allocated memory is still 213.9MB. Free memory was 169.6MB in the beginning and 164.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.64ms. Allocated memory is still 213.9MB. Free memory was 164.4MB in the beginning and 162.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.87ms. Allocated memory is still 213.9MB. Free memory was 162.3MB in the beginning and 131.8MB in the end (delta: 30.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6229.72ms. Allocated memory was 213.9MB in the beginning and 310.4MB in the end (delta: 96.5MB). Free memory was 130.8MB in the beginning and 209.4MB in the end (delta: -78.6MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Script currently locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6104ebc7 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Script currently locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6104ebc7: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.assertScriptNotLocked(ManagedScript.java:109) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-02 13:52:20,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh --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 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:52:22,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:52:22,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 13:52:22,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:52:22,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:52:22,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:52:22,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:52:22,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:52:22,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:52:22,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:52:22,590 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:52:22,591 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:52:22,591 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:52:22,592 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:52:22,592 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:52:22,593 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:52:22,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:52:22,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:52:22,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:52:22,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:52:22,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:52:22,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:52:22,596 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:52:22,597 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:52:22,597 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:52:22,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:52:22,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:52:22,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:52:22,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:52:22,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:52:22,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:52:22,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:22,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:52:22,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:52:22,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:52:22,601 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:52:22,601 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:52:22,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:52:22,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:52:22,602 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:52:22,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:52:22,602 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2023-12-02 13:52:22,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:52:22,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:52:22,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:52:22,890 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:52:22,891 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:52:22,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2023-12-02 13:52:25,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:52:26,090 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:52:26,091 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2023-12-02 13:52:26,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data/4c1062a76/0a93d7c48f2048a69026f708bcddfcb2/FLAG5e08691a7 [2023-12-02 13:52:26,130 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/data/4c1062a76/0a93d7c48f2048a69026f708bcddfcb2 [2023-12-02 13:52:26,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:52:26,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:52:26,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:26,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:52:26,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:52:26,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:26" (1/1) ... [2023-12-02 13:52:26,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b85a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:26, skipping insertion in model container [2023-12-02 13:52:26,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:26" (1/1) ... [2023-12-02 13:52:26,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:52:26,422 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2023-12-02 13:52:26,427 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2023-12-02 13:52:27,012 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,013 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,013 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,014 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,016 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,031 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,032 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,034 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,035 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,317 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:52:27,318 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:52:27,320 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:52:27,321 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:52:27,323 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:52:27,323 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:52:27,324 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:52:27,325 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:52:27,325 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:52:27,326 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:52:27,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:27,511 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:52:27,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:52:27,558 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2023-12-02 13:52:27,558 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2023-12-02 13:52:27,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,613 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,613 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,660 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:52:27,661 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:52:27,662 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:52:27,663 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:52:27,664 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:52:27,665 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:52:27,666 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:52:27,666 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:52:27,667 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:52:27,668 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:52:27,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:27,719 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:52:27,732 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2023-12-02 13:52:27,733 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_649c56bb-63db-460d-9a87-3f20a7662cfb/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2023-12-02 13:52:27,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,784 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,784 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,797 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:52:27,823 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:52:27,824 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:52:27,824 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:52:27,825 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:52:27,825 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:52:27,826 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:52:27,826 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:52:27,826 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:52:27,827 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:52:27,827 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:52:27,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:28,096 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,096 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,096 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,096 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,096 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,097 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,098 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,098 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:28,106 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:52:28,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28 WrapperNode [2023-12-02 13:52:28,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:28,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:52:28,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:52:28,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:52:28,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,220 INFO L138 Inliner]: procedures = 697, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 77 [2023-12-02 13:52:28,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:52:28,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:52:28,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:52:28,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:52:28,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,252 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:52:28,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:52:28,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:52:28,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:52:28,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (1/1) ... [2023-12-02 13:52:28,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:28,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:28,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:52:28,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:52:28,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:52:28,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:52:28,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:52:28,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:52:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-12-02 13:52:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-12-02 13:52:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:52:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:52:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:52:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:52:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:52:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:52:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:52:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:52:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:52:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-12-02 13:52:28,355 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-12-02 13:52:28,568 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:52:28,570 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:52:29,319 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:52:29,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:52:29,357 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:52:29,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:52:29 BoogieIcfgContainer [2023-12-02 13:52:29,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:52:29,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:52:29,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:52:29,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:52:29,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:52:26" (1/3) ... [2023-12-02 13:52:29,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7ae8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:52:29, skipping insertion in model container [2023-12-02 13:52:29,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:28" (2/3) ... [2023-12-02 13:52:29,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7ae8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:52:29, skipping insertion in model container [2023-12-02 13:52:29,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:52:29" (3/3) ... [2023-12-02 13:52:29,367 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2023-12-02 13:52:29,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:52:29,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:52:29,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:52:29,440 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;@1c08e26c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:52:29,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:52:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:52:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:52:29,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:29,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:52:29,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:52:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash 118365304, now seen corresponding path program 1 times [2023-12-02 13:52:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:52:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846567772] [2023-12-02 13:52:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:29,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:52:29,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:52:29,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:52:29,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 13:52:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:29,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:52:29,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:52:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:52:29,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:52:29,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:52:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846567772] [2023-12-02 13:52:29,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846567772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:52:29,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:52:29,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:52:29,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002315492] [2023-12-02 13:52:29,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:52:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:52:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:52:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:52:29,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:52:29,807 INFO L87 Difference]: Start difference. First operand has 56 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:52:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:52:29,918 INFO L93 Difference]: Finished difference Result 109 states and 161 transitions. [2023-12-02 13:52:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:52:29,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-12-02 13:52:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:52:29,929 INFO L225 Difference]: With dead ends: 109 [2023-12-02 13:52:29,929 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 13:52:29,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:52:29,936 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:52:29,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:52:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 13:52:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 13:52:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:52:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2023-12-02 13:52:29,979 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 31 [2023-12-02 13:52:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:52:29,980 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2023-12-02 13:52:29,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:52:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2023-12-02 13:52:29,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:52:29,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:29,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:52:29,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:52:30,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:52:30,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:52:30,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash -738796548, now seen corresponding path program 1 times [2023-12-02 13:52:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:52:30,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934671146] [2023-12-02 13:52:30,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:52:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:52:30,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:52:30,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 13:52:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:30,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-02 13:52:30,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:52:30,735 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-12-02 13:52:30,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-12-02 13:52:30,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-12-02 13:52:30,799 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 13:52:30,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2023-12-02 13:52:32,881 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1|))) is different from true [2023-12-02 13:52:35,003 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2| (_ BitVec 64))) (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2|) (_ bv0 64))))) is different from true [2023-12-02 13:52:37,153 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3|))) is different from true [2023-12-02 13:52:37,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:52:37,294 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 249 [2023-12-02 13:52:39,682 INFO L349 Elim1Store]: treesize reduction 103, result has 16.3 percent of original size [2023-12-02 13:52:39,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 349 treesize of output 308 [2023-12-02 13:52:39,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2023-12-02 13:52:39,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:52:39,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 148 [2023-12-02 13:52:39,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 120 [2023-12-02 13:52:39,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 55 [2023-12-02 13:52:39,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-02 13:52:39,879 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 15 treesize of output 3 [2023-12-02 13:52:39,900 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 22 treesize of output 19 [2023-12-02 13:52:39,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 34 [2023-12-02 13:52:39,950 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:52:39,957 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 13:52:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2023-12-02 13:52:41,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:57:12,780 WARN L293 SmtUtils]: Spent 4.51m on a formula simplification. DAG size of input: 201 DAG size of output: 141 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:57:12,780 INFO L349 Elim1Store]: treesize reduction 1142, result has 34.4 percent of original size [2023-12-02 13:57:12,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 1502 treesize of output 2227 [2023-12-02 13:57:20,148 INFO L224 Elim1Store]: Index analysis took 6893 ms [2023-12-02 13:57:25,352 INFO L349 Elim1Store]: treesize reduction 976, result has 2.0 percent of original size [2023-12-02 13:57:25,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 14 case distinctions, treesize of input 1466 treesize of output 1892 [2023-12-02 13:57:33,655 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 195 DAG size of output: 52 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:57:33,655 INFO L349 Elim1Store]: treesize reduction 1993, result has 5.2 percent of original size [2023-12-02 13:57:33,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 43 case distinctions, treesize of input 5342 treesize of output 7165 [2023-12-02 13:57:34,125 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 672 treesize of output 668 [2023-12-02 13:57:35,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:35,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:35,727 INFO L224 Elim1Store]: Index analysis took 121 ms [2023-12-02 13:57:36,963 INFO L349 Elim1Store]: treesize reduction 567, result has 25.4 percent of original size [2023-12-02 13:57:36,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 609 treesize of output 1668 [2023-12-02 13:57:37,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:37,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:37,760 INFO L349 Elim1Store]: treesize reduction 364, result has 30.0 percent of original size [2023-12-02 13:57:37,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 1119 treesize of output 1248 [2023-12-02 13:57:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:38,613 INFO L349 Elim1Store]: treesize reduction 43, result has 65.6 percent of original size [2023-12-02 13:57:38,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 652 treesize of output 389 [2023-12-02 13:57:38,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:57:38,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:57:38,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 517 treesize of output 321 [2023-12-02 13:57:39,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:57:39,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:57:39,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 156 [2023-12-02 13:57:46,408 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:57:46,652 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-12-02 13:57:46,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 32 [2023-12-02 13:57:46,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:57:46,970 INFO L224 Elim1Store]: Index analysis took 101 ms [2023-12-02 13:57:47,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:57:47,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 210 [2023-12-02 13:57:54,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:57:54,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:57:54,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:57:54,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 382 treesize of output 402 [2023-12-02 13:58:07,920 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:58:07,956 INFO L224 Elim1Store]: Index analysis took 217 ms [2023-12-02 13:58:08,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:58:08,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 138 [2023-12-02 13:58:09,379 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:58:09,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:58:09,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 75 [2023-12-02 13:58:10,012 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2023-12-02 13:58:10,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 191 treesize of output 187 [2023-12-02 13:58:10,682 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:58:10,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934671146] [2023-12-02 13:58:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934671146] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:58:10,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [914037623] [2023-12-02 13:58:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:58:10,683 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:58:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:58:10,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:58:10,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 13:58:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:58:11,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-02 13:58:11,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:58:11,322 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-12-02 13:58:11,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-12-02 13:58:11,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-12-02 13:58:11,378 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 13:58:11,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2023-12-02 13:58:13,418 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_6| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_6|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_6|))) is different from true [2023-12-02 13:58:15,782 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_7| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_7|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_7|))) is different from true [2023-12-02 13:58:17,900 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_8| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_8|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_8|))) is different from true [2023-12-02 13:58:17,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:58:18,004 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 229 [2023-12-02 13:58:18,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:58:18,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 128 [2023-12-02 13:58:18,559 INFO L349 Elim1Store]: treesize reduction 103, result has 16.3 percent of original size [2023-12-02 13:58:18,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 162 treesize of output 167 [2023-12-02 13:58:18,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:58:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:58:18,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:58:18,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 30 [2023-12-02 13:58:18,623 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 25 treesize of output 20 [2023-12-02 13:58:18,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 47 [2023-12-02 13:58:18,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2023-12-02 13:58:18,692 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:58:18,697 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 13:58:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-12-02 13:58:20,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:02:39,850 WARN L293 SmtUtils]: Spent 4.32m on a formula simplification. DAG size of input: 187 DAG size of output: 133 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 14:02:39,850 INFO L349 Elim1Store]: treesize reduction 1015, result has 38.6 percent of original size [2023-12-02 14:02:39,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 1374 treesize of output 1841 [2023-12-02 14:02:40,915 INFO L224 Elim1Store]: Index analysis took 311 ms [2023-12-02 14:02:44,221 INFO L349 Elim1Store]: treesize reduction 1043, result has 2.8 percent of original size [2023-12-02 14:02:44,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 19 case distinctions, treesize of input 3768 treesize of output 3972 [2023-12-02 14:02:45,199 INFO L224 Elim1Store]: Index analysis took 833 ms [2023-12-02 14:02:47,995 INFO L349 Elim1Store]: treesize reduction 693, result has 7.4 percent of original size [2023-12-02 14:02:47,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 12 case distinctions, treesize of input 651 treesize of output 660 [2023-12-02 14:02:48,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 426 treesize of output 422 [2023-12-02 14:03:10,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:03:10,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:03:10,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 207 [2023-12-02 14:03:55,721 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:03:55,721 INFO L224 Elim1Store]: Index analysis took 104 ms [2023-12-02 14:03:55,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:03:55,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 51 [2023-12-02 14:03:58,603 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select v_arrayElimCell_79 (bvadd (_ bv8 64) |ULTIMATE.start_aws_linked_list_insert_after_~after#1.offset|)) (select v_arrayElimCell_79 (bvadd (_ bv8 64) |ULTIMATE.start_aws_linked_list_insert_after_~to_add#1.offset|))) [2023-12-02 14:03:58,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:03:58,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:03:58,623 INFO L224 Elim1Store]: Index analysis took 2021 ms [2023-12-02 14:03:58,672 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 14:03:58,673 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 103 treesize of output 54 [2023-12-02 14:04:00,349 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:00,418 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:00,921 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2023-12-02 14:04:00,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 903 treesize of output 897 [2023-12-02 14:04:07,078 INFO L349 Elim1Store]: treesize reduction 43, result has 50.6 percent of original size [2023-12-02 14:04:07,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11882 treesize of output 11731 [2023-12-02 14:04:07,470 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-12-02 14:04:07,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:08,849 INFO L349 Elim1Store]: treesize reduction 40, result has 56.0 percent of original size [2023-12-02 14:04:08,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 244 treesize of output 280 [2023-12-02 14:04:09,254 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-12-02 14:04:09,381 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:09,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:04:09,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 248 treesize of output 284 [2023-12-02 14:04:10,871 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:10,871 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:10,872 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:11,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:04:11,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 168 treesize of output 220 [2023-12-02 14:04:12,504 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:12,616 INFO L349 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2023-12-02 14:04:12,616 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 175 [2023-12-02 14:04:12,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:12,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:13,034 INFO L349 Elim1Store]: treesize reduction 31, result has 11.4 percent of original size [2023-12-02 14:04:13,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 526 treesize of output 496 [2023-12-02 14:04:13,400 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:13,553 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:13,554 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:13,772 INFO L349 Elim1Store]: treesize reduction 31, result has 11.4 percent of original size [2023-12-02 14:04:13,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 526 treesize of output 496 [2023-12-02 14:04:15,237 INFO L349 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2023-12-02 14:04:15,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 185 treesize of output 211 [2023-12-02 14:04:16,109 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:16,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:16,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:16,128 INFO L224 Elim1Store]: Index analysis took 158 ms [2023-12-02 14:04:16,971 INFO L349 Elim1Store]: treesize reduction 5, result has 93.0 percent of original size [2023-12-02 14:04:16,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 109 treesize of output 162 [2023-12-02 14:04:18,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:18,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:18,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:04:18,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 144 treesize of output 174 [2023-12-02 14:04:19,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:04:19,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 74 [2023-12-02 14:04:19,602 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:19,701 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-12-02 14:04:24,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:04:24,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 114 [2023-12-02 14:04:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [914037623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:04:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142763477] [2023-12-02 14:04:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:04:25,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:04:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:04:25,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:04:25,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:04:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:04:25,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-02 14:04:25,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:04:25,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-12-02 14:04:25,733 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-12-02 14:04:25,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2023-12-02 14:04:25,776 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:04:25,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2023-12-02 14:04:27,936 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_11| (_ BitVec 64))) (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_11| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_11|) (_ bv0 64))))) is different from true [2023-12-02 14:04:30,390 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_12| (_ BitVec 64))) (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_12| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_12|) (_ bv0 64))))) is different from true [2023-12-02 14:04:32,665 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_13| (_ BitVec 64))) (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_13| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_13|) (_ bv0 64))))) is different from true [2023-12-02 14:04:33,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:33,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:33,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:33,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 85 [2023-12-02 14:04:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:33,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 80 [2023-12-02 14:04:33,446 INFO L349 Elim1Store]: treesize reduction 103, result has 16.3 percent of original size [2023-12-02 14:04:33,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 133 [2023-12-02 14:04:33,458 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 105 treesize of output 75 [2023-12-02 14:04:43,259 INFO L349 Elim1Store]: treesize reduction 212, result has 51.0 percent of original size [2023-12-02 14:04:43,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 5455 treesize of output 4273 [2023-12-02 14:04:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:43,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:43,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:43,968 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:04:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:04:44,151 INFO L224 Elim1Store]: Index analysis took 655 ms [2023-12-02 14:04:51,019 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 203 DAG size of output: 149 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 14:04:51,019 INFO L349 Elim1Store]: treesize reduction 256, result has 60.3 percent of original size [2023-12-02 14:04:51,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 9 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 50 case distinctions, treesize of input 253 treesize of output 519 [2023-12-02 14:05:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-12-02 14:05:57,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:05:57,927 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 715 treesize of output 667 [2023-12-02 14:06:00,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142763477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:06:00,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:06:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 17] total 33 [2023-12-02 14:06:00,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989362088] [2023-12-02 14:06:00,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:06:00,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 14:06:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:06:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 14:06:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1119, Unknown=18, NotChecked=684, Total=1980 [2023-12-02 14:06:00,205 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 34 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 6 states have call successors, (13), 13 states have call predecessors, (13), 11 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 14:06:04,013 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_6| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_6|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_6|))) (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_9| (_ BitVec 64))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_9|) (_ bv0 64)))) (and (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_9| .cse0)) (= (select (select |c_#memory_$Pointer$.base| .cse0) (_ bv8 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_9|) (= (select (select |c_#memory_$Pointer$.offset| .cse0) (_ bv8 64)) (_ bv0 64)) (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_9|) (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_11| (_ BitVec 64))) (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_11| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_11|) (_ bv0 64))))) (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1|) (_ bv0 64)) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1|)))) is different from true [2023-12-02 14:06:13,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:06:15,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:06:17,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:06:20,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:06:23,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:06:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:06:36,115 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2023-12-02 14:06:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 14:06:36,118 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 6 states have call successors, (13), 13 states have call predecessors, (13), 11 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) Word has length 31 [2023-12-02 14:06:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:06:36,120 INFO L225 Difference]: With dead ends: 74 [2023-12-02 14:06:36,120 INFO L226 Difference]: Without dead ends: 72 [2023-12-02 14:06:36,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 77 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=261, Invalid=1922, Unknown=19, NotChecked=990, Total=3192 [2023-12-02 14:06:36,123 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 82 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 41 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 841 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:06:36,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 443 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 883 Invalid, 11 Unknown, 841 Unchecked, 26.3s Time] [2023-12-02 14:06:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-02 14:06:36,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2023-12-02 14:06:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 21 states have call successors, (21), 6 states have call predecessors, (21), 7 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-12-02 14:06:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions. [2023-12-02 14:06:36,143 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 31 [2023-12-02 14:06:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:06:36,143 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 90 transitions. [2023-12-02 14:06:36,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 6 states have call successors, (13), 13 states have call predecessors, (13), 11 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 14:06:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions. [2023-12-02 14:06:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 14:06:36,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:06:36,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:06:36,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 14:06:36,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:06:36,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 14:06:36,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:06:36,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:06:36,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:06:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1036210814, now seen corresponding path program 1 times [2023-12-02 14:06:36,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:06:36,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746942485] [2023-12-02 14:06:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:06:36,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:06:36,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:06:36,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:06:36,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_649c56bb-63db-460d-9a87-3f20a7662cfb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 14:06:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:06:36,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 14:06:36,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:06:42,511 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 102 DAG size of output: 57 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 14:06:42,511 INFO L349 Elim1Store]: treesize reduction 420, result has 34.1 percent of original size [2023-12-02 14:06:42,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 430 treesize of output 1059 [2023-12-02 14:06:42,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 641 treesize of output 565 [2023-12-02 14:06:43,360 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:44,140 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:45,070 INFO L224 Elim1Store]: Index analysis took 2379 ms [2023-12-02 14:06:46,302 INFO L349 Elim1Store]: treesize reduction 524, result has 6.6 percent of original size [2023-12-02 14:06:46,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 26 case distinctions, treesize of input 212 treesize of output 416 [2023-12-02 14:06:47,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 19 [2023-12-02 14:06:53,969 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:53,985 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:54,052 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:54,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:54,128 INFO L224 Elim1Store]: Index analysis took 134 ms [2023-12-02 14:06:54,459 INFO L349 Elim1Store]: treesize reduction 135, result has 24.6 percent of original size [2023-12-02 14:06:54,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 16 case distinctions, treesize of input 750 treesize of output 741 [2023-12-02 14:06:55,269 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 9 treesize of output 7 [2023-12-02 14:06:55,371 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 9 treesize of output 7 [2023-12-02 14:06:55,445 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 9 treesize of output 7 [2023-12-02 14:06:56,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:06:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:06:56,164 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:56,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:06:56,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:06:56,176 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:56,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:56,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:56,321 INFO L224 Elim1Store]: Index analysis took 138 ms [2023-12-02 14:06:56,519 INFO L349 Elim1Store]: treesize reduction 108, result has 18.2 percent of original size [2023-12-02 14:06:56,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 851 treesize of output 820 [2023-12-02 14:06:56,966 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 9 treesize of output 7 [2023-12-02 14:06:57,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:57,529 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:06:57,534 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-12-02 14:06:57,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 111 [2023-12-02 14:06:57,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:06:57,876 INFO L349 Elim1Store]: treesize reduction 103, result has 19.5 percent of original size [2023-12-02 14:06:57,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 1080 treesize of output 1025