./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/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_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/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_e99cf788-9c96-4def-8752-f56f676b95b7/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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:34:36,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:34:37,060 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:34:37,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:34:37,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:34:37,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:34:37,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:34:37,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:34:37,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:34:37,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:34:37,091 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:34:37,092 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:34:37,092 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:34:37,093 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:34:37,093 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:34:37,093 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:34:37,094 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:34:37,094 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:34:37,095 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:34:37,095 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:34:37,096 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:34:37,097 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:34:37,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:34:37,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:34:37,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:34:37,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:34:37,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:34:37,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:34:37,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:34:37,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:34:37,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:34:37,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:34:37,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:34:37,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:34:37,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:34:37,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:34:37,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:34:37,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:34:37,103 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:34:37,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:34:37,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:34:37,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:34:37,104 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:34:37,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:34:37,105 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_e99cf788-9c96-4def-8752-f56f676b95b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2023-12-02 14:34:37,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:34:37,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:34:37,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:34:37,367 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:34:37,367 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:34:37,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2023-12-02 14:34:40,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:34:40,443 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:34:40,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2023-12-02 14:34:40,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/data/eb646bc7f/f7e9a81b47c54f14a4eb039247c742e2/FLAG550020377 [2023-12-02 14:34:40,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/data/eb646bc7f/f7e9a81b47c54f14a4eb039247c742e2 [2023-12-02 14:34:40,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:34:40,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:34:40,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:34:40,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:34:40,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:34:40,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:40" (1/1) ... [2023-12-02 14:34:40,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327f4b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:40, skipping insertion in model container [2023-12-02 14:34:40,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:40" (1/1) ... [2023-12-02 14:34:40,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:34:40,891 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_e99cf788-9c96-4def-8752-f56f676b95b7/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2023-12-02 14:34:40,898 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_e99cf788-9c96-4def-8752-f56f676b95b7/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2023-12-02 14:34:41,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,502 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,519 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,520 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,522 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,523 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:41,821 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 14:34:41,822 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 14:34:41,824 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 14:34:41,825 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 14:34:41,827 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 14:34:41,827 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 14:34:41,828 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 14:34:41,829 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 14:34:41,829 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 14:34:41,830 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 14:34:41,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:34:42,002 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:34:42,014 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_e99cf788-9c96-4def-8752-f56f676b95b7/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2023-12-02 14:34:42,015 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_e99cf788-9c96-4def-8752-f56f676b95b7/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2023-12-02 14:34:42,059 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:34:42,116 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 14:34:42,117 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 14:34:42,118 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 14:34:42,119 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 14:34:42,120 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 14:34:42,120 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 14:34:42,121 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 14:34:42,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 14:34:42,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 14:34:42,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 14:34:42,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:34:42,331 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,331 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,331 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,332 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,332 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,332 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,332 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,332 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,333 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,334 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:34:42,340 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:34:42,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42 WrapperNode [2023-12-02 14:34:42,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:34:42,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:34:42,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:34:42,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:34:42,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,450 INFO L138 Inliner]: procedures = 678, calls = 1040, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 135 [2023-12-02 14:34:42,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:34:42,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:34:42,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:34:42,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:34:42,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:34:42,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:34:42,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:34:42,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:34:42,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (1/1) ... [2023-12-02 14:34:42,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:34:42,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:42,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:34:42,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:34:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:34:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:34:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:34:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-12-02 14:34:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-12-02 14:34:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:34:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-12-02 14:34:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-12-02 14:34:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:34:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:34:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:34:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:34:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:34:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:34:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:34:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:34:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:34:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 14:34:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 14:34:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:34:42,820 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:34:42,823 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:34:43,036 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:34:43,139 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:34:43,139 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:34:43,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:43 BoogieIcfgContainer [2023-12-02 14:34:43,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:34:43,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:34:43,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:34:43,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:34:43,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:34:40" (1/3) ... [2023-12-02 14:34:43,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144672f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:43, skipping insertion in model container [2023-12-02 14:34:43,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:42" (2/3) ... [2023-12-02 14:34:43,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144672f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:43, skipping insertion in model container [2023-12-02 14:34:43,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:43" (3/3) ... [2023-12-02 14:34:43,149 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness.i [2023-12-02 14:34:43,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:34:43,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:34:43,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:34:43,211 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;@3393f930, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:34:43,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:34:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:34:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 14:34:43,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:43,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:43,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:34:43,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1231067232, now seen corresponding path program 1 times [2023-12-02 14:34:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:43,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328532179] [2023-12-02 14:34:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:34:43,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328532179] [2023-12-02 14:34:43,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328532179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:34:43,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737454252] [2023-12-02 14:34:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:43,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:43,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:43,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:43,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:34:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:44,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 14:34:44,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:44,259 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 [2023-12-02 14:34:44,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-12-02 14:34:44,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2023-12-02 14:34:44,385 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 [2023-12-02 14:34:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:34:45,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:34:45,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737454252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:34:45,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:34:45,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-12-02 14:34:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748283023] [2023-12-02 14:34:45,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:34:45,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:34:45,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:34:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:34:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:34:46,013 INFO L87 Difference]: Start difference. First operand has 45 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 14:34:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:34:46,576 INFO L93 Difference]: Finished difference Result 121 states and 170 transitions. [2023-12-02 14:34:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:34:46,580 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, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 37 [2023-12-02 14:34:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:34:46,588 INFO L225 Difference]: With dead ends: 121 [2023-12-02 14:34:46,588 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 14:34:46,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:34:46,595 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:34:46,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 205 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:34:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 14:34:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-12-02 14:34:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 47 states have internal predecessors, (58), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2023-12-02 14:34:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 106 transitions. [2023-12-02 14:34:46,642 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 106 transitions. Word has length 37 [2023-12-02 14:34:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:34:46,643 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 106 transitions. [2023-12-02 14:34:46,643 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, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 14:34:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 106 transitions. [2023-12-02 14:34:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 14:34:46,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:34:46,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:34:46,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:34:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:46,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:34:46,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:34:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1753865417, now seen corresponding path program 1 times [2023-12-02 14:34:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:34:46,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818531272] [2023-12-02 14:34:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:34:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 14:34:47,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:34:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818531272] [2023-12-02 14:34:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818531272] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:34:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718438170] [2023-12-02 14:34:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:34:47,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:34:47,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:34:47,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:34:47,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99cf788-9c96-4def-8752-f56f676b95b7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:34:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:34:47,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-02 14:34:47,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:34:47,395 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 [2023-12-02 14:34:47,408 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 [2023-12-02 14:34:47,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-12-02 14:34:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:34:47,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-12-02 14:34:47,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-12-02 14:34:47,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:34:47,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-12-02 14:34:47,658 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2023-12-02 14:34:47,659 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 171 treesize of output 163 [2023-12-02 14:34:47,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:34:47,673 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 43 treesize of output 20 [2023-12-02 14:34:47,680 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 101 treesize of output 99 [2023-12-02 14:34:47,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:34:47,698 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 94 treesize of output 21 [2023-12-02 14:34:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 14:34:49,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:34:53,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:34:53,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 364 treesize of output 449 [2023-12-02 14:34:54,158 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-12-02 14:34:54,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 90 [2023-12-02 14:34:54,201 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-12-02 14:34:54,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 77 [2023-12-02 14:34:54,293 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-12-02 14:34:54,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-12-02 14:34:54,340 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-12-02 14:34:54,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 90 [2023-12-02 14:34:54,392 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-12-02 14:34:54,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 90 [2023-12-02 14:34:54,432 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-12-02 14:34:54,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 61 [2023-12-02 14:34:54,483 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-12-02 14:34:54,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 19 [2023-12-02 14:34:54,569 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-02 14:34:54,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 1 [2023-12-02 14:34:54,851 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 16 |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|)) (.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) (and (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_prenex_3 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_prenex_3))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse3) 0)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_prenex_1 (Array Int Int))) (= (select (select (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_prenex_1))) (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse5) 0)))) (or (not (= |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset| 0))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_8 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_subst_2 Int)) (= (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_2))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse5) 0)) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int) (v_ArrVal_185 (Array Int Int))) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_subst_2 Int) (v_subst_1 Int)) (or (not (= v_DerPreprocessor_13 (select (store (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14) v_subst_1))) (not (= (select (select (let ((.cse8 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_1))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|) 0)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (not (= (select (select (let ((.cse9 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_ArrVal_185))) (store .cse9 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse9 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|) 0)))) (forall ((v_ArrVal_175 Int)) (let ((.cse11 (+ |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset| 24))) (or (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_arrayElimArr_7 (Array Int Int)) (v_DerPreprocessor_17 Int) (v_DerPreprocessor_16 Int) (v_subst_3 Int) (v_subst_2 Int)) (or (not (= v_DerPreprocessor_16 (select (store (store v_arrayElimArr_7 v_subst_3 v_DerPreprocessor_16) v_subst_2 v_DerPreprocessor_17) v_subst_3))) (not (= (select (select (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_7))) (store .cse10 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse10 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_3))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse11) 0)))) (forall ((v_prenex_4 (Array Int Int))) (not (= 0 (select (select (let ((.cse12 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_prenex_4))) (store .cse12 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse12 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse11)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1))))) (forall ((v_ArrVal_175 Int) (v_ArrVal_185 (Array Int Int))) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_DerPreprocessor_15 Int) (v_subst_3 Int) (v_subst_2 Int)) (or (not (= (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_3))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|) 0)) (not (= (select (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_14) v_subst_2 v_DerPreprocessor_15) v_subst_3) v_DerPreprocessor_14)))) (not (= (select (select (let ((.cse14 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_ArrVal_185))) (store .cse14 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse14 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|) 0)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_5 (Array Int Int)) (v_DerPreprocessor_18 Int) (v_DerPreprocessor_7 Int) (v_subst_4 Int) (v_subst_3 Int) (v_DerPreprocessor_20 Int) (v_subst_2 Int) (v_subst_1 Int) (v_DerPreprocessor_21 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_19 Int)) (let ((.cse18 (store v_arrayElimArr_5 v_subst_4 v_DerPreprocessor_18)) (.cse16 (store v_arrayElimArr_5 v_subst_4 v_DerPreprocessor_20))) (let ((.cse15 (store (store .cse16 v_subst_3 v_DerPreprocessor_7) v_subst_1 v_DerPreprocessor_8)) (.cse17 (store .cse18 v_subst_2 v_DerPreprocessor_19))) (or (not (= .cse15 (store (store v_arrayElimArr_5 v_subst_4 (select .cse15 v_subst_4)) v_subst_1 v_DerPreprocessor_8))) (not (= (select .cse15 v_subst_3) v_DerPreprocessor_7)) (not (= v_DerPreprocessor_20 (select (store .cse16 v_subst_3 v_DerPreprocessor_21) v_subst_4))) (not (= v_DerPreprocessor_18 (select .cse17 v_subst_4))) (not (= (store (store .cse18 v_subst_2 (select .cse15 v_subst_2)) v_subst_1 v_DerPreprocessor_8) .cse15)) (= (select (select (let ((.cse19 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_5))) (store .cse19 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse19 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_4))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) .cse3) 0) (not (= .cse17 (store (store .cse16 v_subst_3 (select .cse17 v_subst_3)) v_subst_2 v_DerPreprocessor_19))))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int) (v_ArrVal_185 (Array Int Int))) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_DerPreprocessor_15 Int) (v_subst_3 Int) (v_subst_2 Int) (v_subst_1 Int)) (or (= v_subst_3 v_subst_2) (not (= (select (select (let ((.cse20 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_1))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|) 0)) (= v_subst_3 v_subst_1) (not (= v_DerPreprocessor_13 (select (store (store (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_13) v_subst_3 (select v_arrayElimArr_6 v_subst_3)) v_subst_2 v_DerPreprocessor_15) v_subst_1))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (not (= (select (select (let ((.cse21 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_ArrVal_185))) (store .cse21 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse21 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rend_harness_~#list~0#1.offset|) 0)))))) is different from false [2023-12-02 14:34:55,046 INFO L349 Elim1Store]: treesize reduction 78, result has 46.9 percent of original size [2023-12-02 14:34:55,046 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 4 case distinctions, treesize of input 234 treesize of output 223 [2023-12-02 14:34:55,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:34:55,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 167 [2023-12-02 14:34:55,102 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 144 treesize of output 138 [2023-12-02 14:34:55,199 INFO L349 Elim1Store]: treesize reduction 78, result has 46.9 percent of original size [2023-12-02 14:34:55,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 141 [2023-12-02 14:34:55,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:34:55,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 381 treesize of output 339 [2023-12-02 14:34:55,251 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 150 treesize of output 144 [2023-12-02 14:34:55,558 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 6 treesize of output 4 [2023-12-02 14:34:55,621 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 6 treesize of output 4 [2023-12-02 14:34:55,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:34:55,644 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 62 treesize of output 72 [2023-12-02 14:34:55,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:34:55,699 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 70 treesize of output 80 [2023-12-02 14:34:55,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:34:55,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:34:55,803 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 3 case distinctions, treesize of input 35 treesize of output 46 [2023-12-02 14:34:55,819 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 56 treesize of output 50 [2023-12-02 14:34:55,826 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:35:04,091 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 514 DAG size of output: 169 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 14:35:04,091 INFO L349 Elim1Store]: treesize reduction 1784, result has 17.4 percent of original size [2023-12-02 14:35:04,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 15 new quantified variables, introduced 71 case distinctions, treesize of input 631 treesize of output 2055 [2023-12-02 14:35:04,482 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:35:04,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:35:04,806 INFO L224 Elim1Store]: Index analysis took 200 ms [2023-12-02 14:35:04,918 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-02 14:35:04,919 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 29 treesize of output 20 [2023-12-02 14:43:08,392 WARN L293 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 38246 DAG size of output: 38200 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 14:43:29,107 WARN L293 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 37429 DAG size of output: 37309 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)