./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5 --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 d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:46:15,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:46:15,925 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:46:15,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:46:15,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:46:15,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:46:15,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:46:15,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:46:15,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:46:15,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:46:15,989 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:46:15,991 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:46:15,991 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:46:15,993 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:46:15,994 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:46:15,994 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:46:15,995 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:46:15,995 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:46:15,996 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:46:15,998 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:46:15,999 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:46:15,999 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:46:16,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:46:16,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:46:16,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:46:16,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:46:16,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:46:16,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:46:16,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:46:16,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:46:16,006 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:46:16,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:46:16,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:46:16,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:46:16,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:16,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:46:16,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:46:16,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:46:16,044 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:46:16,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:46:16,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:46:16,045 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:46:16,046 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:46:16,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:46:16,046 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_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2023-11-21 19:46:16,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:46:16,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:46:16,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:46:16,371 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:46:16,373 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:46:16,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2023-11-21 19:46:19,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:46:19,896 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:46:19,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2023-11-21 19:46:19,933 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/data/4cdc98392/b387dfcd2c75404cbc813f4147990acc/FLAGbc441659e [2023-11-21 19:46:19,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/data/4cdc98392/b387dfcd2c75404cbc813f4147990acc [2023-11-21 19:46:19,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:46:19,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:46:19,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:19,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:46:19,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:46:19,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:19" (1/1) ... [2023-11-21 19:46:19,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71da7fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:19, skipping insertion in model container [2023-11-21 19:46:19,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:46:19" (1/1) ... [2023-11-21 19:46:20,098 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:46:20,377 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_c39428b9-9792-4613-9304-38f5f0e9c97f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2023-11-21 19:46:20,385 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_c39428b9-9792-4613-9304-38f5f0e9c97f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2023-11-21 19:46:21,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,359 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,360 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,362 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,383 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,385 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,386 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,388 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:21,791 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:46:21,792 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:46:21,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:46:21,795 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:46:21,798 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:46:21,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:46:21,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:46:21,800 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:46:21,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:46:21,802 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:46:22,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:22,036 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:46:22,052 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_c39428b9-9792-4613-9304-38f5f0e9c97f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2023-11-21 19:46:22,052 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_c39428b9-9792-4613-9304-38f5f0e9c97f/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2023-11-21 19:46:22,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,145 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:46:22,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:46:22,229 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:46:22,230 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:46:22,231 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:46:22,240 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:46:22,240 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:46:22,241 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:46:22,242 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:46:22,243 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:46:22,243 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:46:22,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:46:22,608 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,608 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,608 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,608 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,609 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,609 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,609 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,609 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,609 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,609 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,610 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,610 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,610 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,610 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,610 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,610 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:46:22,617 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:46:22,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22 WrapperNode [2023-11-21 19:46:22,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:46:22,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:22,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:46:22,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:46:22,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,751 INFO L138 Inliner]: procedures = 678, calls = 1048, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 149 [2023-11-21 19:46:22,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:46:22,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:46:22,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:46:22,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:46:22,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:46:22,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:46:22,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:46:22,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:46:22,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (1/1) ... [2023-11-21 19:46:22,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:46:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:46:22,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:46:22,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:46:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:46:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:46:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:46:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-21 19:46:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-21 19:46:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:46:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-21 19:46:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-21 19:46:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:46:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:46:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2023-11-21 19:46:22,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2023-11-21 19:46:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:46:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:46:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:46:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:46:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:46:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:46:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:46:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 19:46:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 19:46:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-21 19:46:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-21 19:46:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:46:23,297 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:46:23,300 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:46:23,657 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:46:23,846 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:46:23,847 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:46:23,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:23 BoogieIcfgContainer [2023-11-21 19:46:23,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:46:23,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:46:23,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:46:23,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:46:23,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:46:19" (1/3) ... [2023-11-21 19:46:23,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ab55da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:23, skipping insertion in model container [2023-11-21 19:46:23,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:46:22" (2/3) ... [2023-11-21 19:46:23,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ab55da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:46:23, skipping insertion in model container [2023-11-21 19:46:23,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:46:23" (3/3) ... [2023-11-21 19:46:23,866 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2023-11-21 19:46:23,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:46:23,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:46:23,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:46:23,950 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;@6bfef0f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:46:23,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:46:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-21 19:46:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-21 19:46:23,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:23,965 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:23,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:46:23,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1982315071, now seen corresponding path program 1 times [2023-11-21 19:46:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:23,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487191018] [2023-11-21 19:46:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 19:46:25,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487191018] [2023-11-21 19:46:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487191018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:46:25,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220736869] [2023-11-21 19:46:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:25,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:46:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:46:25,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:46:25,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:46:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:25,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-21 19:46:25,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:46:25,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-21 19:46:25,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-21 19:46:25,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-11-21 19:46:25,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-11-21 19:46:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 19:46:27,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:46:27,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220736869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:27,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:46:27,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-11-21 19:46:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678896578] [2023-11-21 19:46:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 19:46:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:27,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 19:46:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:46:27,720 INFO L87 Difference]: Start difference. First operand has 73 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 19:46:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:28,342 INFO L93 Difference]: Finished difference Result 168 states and 242 transitions. [2023-11-21 19:46:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:46:28,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 42 [2023-11-21 19:46:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:28,355 INFO L225 Difference]: With dead ends: 168 [2023-11-21 19:46:28,355 INFO L226 Difference]: Without dead ends: 100 [2023-11-21 19:46:28,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:46:28,363 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 28 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:28,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 329 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 19:46:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-21 19:46:28,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-11-21 19:46:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 53 states have internal predecessors, (63), 36 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-21 19:46:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 134 transitions. [2023-11-21 19:46:28,422 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 134 transitions. Word has length 42 [2023-11-21 19:46:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:28,423 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 134 transitions. [2023-11-21 19:46:28,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 19:46:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 134 transitions. [2023-11-21 19:46:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 19:46:28,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:28,427 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:28,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:46:28,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 19:46:28,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:46:28,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1641522883, now seen corresponding path program 1 times [2023-11-21 19:46:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667657684] [2023-11-21 19:46:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 19:46:29,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:29,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667657684] [2023-11-21 19:46:29,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667657684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:46:29,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:46:29,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:46:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26889066] [2023-11-21 19:46:29,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:46:29,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:46:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:46:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:46:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:46:29,015 INFO L87 Difference]: Start difference. First operand 99 states and 134 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 19:46:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:46:29,208 INFO L93 Difference]: Finished difference Result 180 states and 244 transitions. [2023-11-21 19:46:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:46:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 44 [2023-11-21 19:46:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:46:29,211 INFO L225 Difference]: With dead ends: 180 [2023-11-21 19:46:29,211 INFO L226 Difference]: Without dead ends: 99 [2023-11-21 19:46:29,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:46:29,214 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 34 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:46:29,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 411 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:46:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-21 19:46:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-21 19:46:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 51 states have (on average 1.196078431372549) internal successors, (61), 53 states have internal predecessors, (61), 36 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-21 19:46:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 132 transitions. [2023-11-21 19:46:29,251 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 132 transitions. Word has length 44 [2023-11-21 19:46:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:46:29,251 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 132 transitions. [2023-11-21 19:46:29,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 19:46:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 132 transitions. [2023-11-21 19:46:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-21 19:46:29,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:46:29,256 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:46:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:46:29,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:46:29,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:46:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1298930586, now seen corresponding path program 1 times [2023-11-21 19:46:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:46:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292305567] [2023-11-21 19:46:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:46:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-21 19:46:29,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:46:29,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292305567] [2023-11-21 19:46:29,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292305567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:46:29,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822532221] [2023-11-21 19:46:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:46:29,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:46:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:46:29,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:46:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39428b9-9792-4613-9304-38f5f0e9c97f/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:46:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:46:29,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-21 19:46:29,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:46:29,977 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-21 19:46:29,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2023-11-21 19:46:30,066 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 18 treesize of output 19 [2023-11-21 19:46:30,098 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 18 treesize of output 19 [2023-11-21 19:46:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2023-11-21 19:46:30,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-21 19:46:30,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 19:46:30,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2023-11-21 19:46:30,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-11-21 19:46:30,356 INFO L349 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2023-11-21 19:46:30,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 151 [2023-11-21 19:46:30,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 121 [2023-11-21 19:46:30,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 38 [2023-11-21 19:46:30,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:46:30,408 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 57 treesize of output 28 [2023-11-21 19:46:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 19:46:31,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:46:35,604 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (+ 16 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|)) (.cse2 (+ 8 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse4 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16))) (and (forall ((v_ArrVal_390 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_390))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse2) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_387 Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse5)))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_387))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse6) 0)) (forall ((v_ArrVal_390 (Array Int Int))) (= (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_390))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse6) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_387 Int)) (= (select (select (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse5)))) (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_387))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse2) 0)) (let ((.cse10 (+ 24 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|))) (or (forall ((v_ArrVal_390 (Array Int Int))) (not (= (select (select (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_390))) (store .cse9 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse9 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse10) 0))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_387 Int)) (not (= 0 (select (select (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse5)))) (store .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_387))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse10)))))) (or (not (= |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base| 0)) (not (= 0 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|))) (or (forall ((v_ArrVal_390 (Array Int Int))) (not (= (select (select (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_390))) (store .cse12 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse12 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|) 0))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_387 Int)) (not (= (select (select (let ((.cse13 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse5)))) (store .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_387))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|) 0)))))) is different from false [2023-11-21 19:46:36,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 19:46:36,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 380 treesize of output 457 [2023-11-21 19:47:01,494 WARN L293 SmtUtils]: Spent 23.23s on a formula simplification. DAG size of input: 344 DAG size of output: 181 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-21 19:47:01,495 INFO L349 Elim1Store]: treesize reduction 774, result has 32.7 percent of original size [2023-11-21 19:47:01,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 13 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 15 new quantified variables, introduced 59 case distinctions, treesize of input 927 treesize of output 2510