./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 0aec0bb8b8715e014581c4eef5e1e25c7e0452a528f8abdf2f2a721d17b0fa7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:35:53,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:35:53,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:35:53,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:35:53,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:35:53,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:35:53,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:35:53,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:35:53,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:35:53,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:35:53,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:35:53,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:35:53,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:35:53,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:35:53,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:35:53,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:35:53,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:35:53,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:35:53,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:35:53,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:35:53,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:35:53,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:35:53,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:35:53,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:35:53,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:35:53,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:35:53,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:35:53,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:35:53,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:35:53,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:35:53,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:35:53,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:35:53,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:35:53,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:35:53,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:35:53,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:35:53,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:35:53,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:35:53,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:35:53,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:35:53,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:35:53,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 09:35:53,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:35:53,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:35:53,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:35:53,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:35:53,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:35:53,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:35:53,126 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:35:53,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:35:53,131 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:35:53,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:35:53,131 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:35:53,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:35:53,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:35:53,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:35:53,132 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:35:53,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:35:53,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:35:53,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:35:53,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:35:53,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:35:53,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:35:53,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:35:53,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:35:53,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:35:53,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:35:53,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:35:53,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:35:53,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:35:53,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:35:53,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:35:53,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:35:53,135 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:35:53,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:35:53,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:35:53,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:35:53,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:35:53,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:35:53,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:35:53,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0aec0bb8b8715e014581c4eef5e1e25c7e0452a528f8abdf2f2a721d17b0fa7f [2022-12-14 09:35:53,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:35:53,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:35:53,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:35:53,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:35:53,317 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:35:53,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i [2022-12-14 09:35:55,866 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:35:56,147 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:35:56,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i [2022-12-14 09:35:56,165 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/data/7aaea2749/cbc4a89ceea04210a8849cddcd03b90d/FLAGcf4c73a48 [2022-12-14 09:35:56,175 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/data/7aaea2749/cbc4a89ceea04210a8849cddcd03b90d [2022-12-14 09:35:56,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:35:56,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:35:56,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:35:56,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:35:56,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:35:56,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:35:56" (1/1) ... [2022-12-14 09:35:56,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c97a35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:56, skipping insertion in model container [2022-12-14 09:35:56,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:35:56" (1/1) ... [2022-12-14 09:35:56,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:35:56,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:35:56,401 WARN L237 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_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i[4494,4507] [2022-12-14 09:35:56,406 WARN L237 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_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i[4554,4567] [2022-12-14 09:35:56,996 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:56,997 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:56,997 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:56,998 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:56,999 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,011 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,012 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,017 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,018 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,019 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,020 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,020 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,021 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,064 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:35:57,064 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:35:57,065 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:35:57,068 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 09:35:57,070 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 09:35:57,070 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 09:35:57,271 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 09:35:57,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 09:35:57,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 09:35:57,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 09:35:57,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 09:35:57,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 09:35:57,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 09:35:57,279 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 09:35:57,280 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 09:35:57,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 09:35:57,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 09:35:57,400 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 09:35:57,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:35:57,440 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:35:57,453 WARN L237 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_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i[4494,4507] [2022-12-14 09:35:57,453 WARN L237 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_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/sv-benchmarks/c/aws-c-common/aws_linked_list_prev_harness.i[4554,4567] [2022-12-14 09:35:57,496 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,496 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,497 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,497 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,498 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,506 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,506 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,507 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,508 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,509 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,509 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,510 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,510 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 09:35:57,515 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:35:57,516 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:35:57,516 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 09:35:57,519 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 09:35:57,520 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 09:35:57,520 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 09:35:57,535 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 09:35:57,536 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 09:35:57,536 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 09:35:57,537 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 09:35:57,537 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 09:35:57,538 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 09:35:57,538 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 09:35:57,538 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 09:35:57,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 09:35:57,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 09:35:57,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 09:35:57,554 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 09:35:57,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:35:57,677 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:35:57,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57 WrapperNode [2022-12-14 09:35:57,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:35:57,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:35:57,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:35:57,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:35:57,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,739 INFO L138 Inliner]: procedures = 679, calls = 1038, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 57 [2022-12-14 09:35:57,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:35:57,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:35:57,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:35:57,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:35:57,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:35:57,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:35:57,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:35:57,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:35:57,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (1/1) ... [2022-12-14 09:35:57,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:35:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:35:57,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:35:57,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 09:35:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-12-14 09:35:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:35:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:35:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 09:35:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 09:35:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:35:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 09:35:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 09:35:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-12-14 09:35:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-12-14 09:35:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:35:57,996 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:35:57,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:35:58,146 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:35:58,210 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:35:58,210 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 09:35:58,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:58 BoogieIcfgContainer [2022-12-14 09:35:58,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:35:58,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:35:58,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:35:58,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:35:58,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:35:56" (1/3) ... [2022-12-14 09:35:58,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1689f3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:35:58, skipping insertion in model container [2022-12-14 09:35:58,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:57" (2/3) ... [2022-12-14 09:35:58,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1689f3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:35:58, skipping insertion in model container [2022-12-14 09:35:58,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:58" (3/3) ... [2022-12-14 09:35:58,219 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_prev_harness.i [2022-12-14 09:35:58,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:35:58,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:35:58,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:35:58,273 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=LoopsAndPotentialCycles, 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;@274bd68c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:35:58,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:35:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 09:35:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 09:35:58,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:35:58,282 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:35:58,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:35:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:35:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash -660850364, now seen corresponding path program 1 times [2022-12-14 09:35:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:35:58,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987730224] [2022-12-14 09:35:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:35:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:35:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:35:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:35:59,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:35:59,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987730224] [2022-12-14 09:35:59,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987730224] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:35:59,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852803756] [2022-12-14 09:35:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:35:59,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:35:59,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:35:59,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:35:59,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:35:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:35:59,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-14 09:35:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:35:59,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-14 09:35:59,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-14 09:35:59,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:35:59,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:35:59,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:35:59,853 INFO L350 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 10 treesize of output 8 [2022-12-14 09:36:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:36:01,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:36:01,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852803756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:36:01,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:36:01,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2022-12-14 09:36:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701818552] [2022-12-14 09:36:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:36:01,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 09:36:01,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:36:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 09:36:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:36:01,177 INFO L87 Difference]: Start difference. First operand has 33 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 13 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 09:36:01,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:36:01,672 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-12-14 09:36:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:36:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 15 [2022-12-14 09:36:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:36:01,680 INFO L225 Difference]: With dead ends: 62 [2022-12-14 09:36:01,680 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 09:36:01,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-12-14 09:36:01,684 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:36:01,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 81 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:36:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 09:36:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-14 09:36:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:36:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-12-14 09:36:01,714 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2022-12-14 09:36:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:36:01,714 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-12-14 09:36:01,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 09:36:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-12-14 09:36:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 09:36:01,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:36:01,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:36:01,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:36:01,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 09:36:01,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:36:01,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:36:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1080021711, now seen corresponding path program 1 times [2022-12-14 09:36:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:36:01,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328804516] [2022-12-14 09:36:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:36:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:36:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:36:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:36:03,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:36:03,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328804516] [2022-12-14 09:36:03,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328804516] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:36:03,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990733831] [2022-12-14 09:36:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:36:03,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:36:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:36:03,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:36:03,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:36:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:36:03,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 90 conjunts are in the unsatisfiable core [2022-12-14 09:36:03,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:36:03,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:03,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:03,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-12-14 09:36:03,152 INFO L350 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 18 treesize of output 16 [2022-12-14 09:36:03,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:03,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-12-14 09:36:03,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:03,166 INFO L350 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 27 treesize of output 15 [2022-12-14 09:36:03,172 INFO L350 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 09:36:03,178 INFO L350 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 09:36:04,617 INFO L321 Elim1Store]: treesize reduction 69, result has 25.0 percent of original size [2022-12-14 09:36:04,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 304 treesize of output 176 [2022-12-14 09:36:04,652 INFO L321 Elim1Store]: treesize reduction 74, result has 8.6 percent of original size [2022-12-14 09:36:04,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 64 [2022-12-14 09:36:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:36:04,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:36:14,485 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:36:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:36:15,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990733831] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:36:15,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70799043] [2022-12-14 09:36:15,659 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 09:36:15,659 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:36:15,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:36:15,665 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:36:15,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:36:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,705 INFO L350 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 50 treesize of output 30 [2022-12-14 09:36:15,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:36:15,737 INFO L321 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2022-12-14 09:36:15,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 83 [2022-12-14 09:36:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,818 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-12-14 09:36:15,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 09:36:15,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-12-14 09:36:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2022-12-14 09:36:15,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:36:15,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 17 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-12-14 09:36:16,332 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2022-12-14 09:36:16,337 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 19 for LOIs [2022-12-14 09:36:16,338 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 34 for LOIs [2022-12-14 09:36:16,398 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 15 for LOIs [2022-12-14 09:36:16,456 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:36:18,033 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '424#(and (<= 0 |__VERIFIER_assert_#in~cond|) (= |~#s_can_fail_allocator_static~0.base| 4) (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (<= |__VERIFIER_assert_#in~cond| 1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:36:18,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:36:18,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:36:18,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 31 [2022-12-14 09:36:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249426998] [2022-12-14 09:36:18,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:36:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 09:36:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:36:18,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 09:36:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 09:36:18,038 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 31 states, 14 states have (on average 2.357142857142857) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (17), 4 states have call predecessors, (17), 11 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-12-14 09:36:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:36:18,726 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-12-14 09:36:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 09:36:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 14 states have (on average 2.357142857142857) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (17), 4 states have call predecessors, (17), 11 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) Word has length 24 [2022-12-14 09:36:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:36:18,727 INFO L225 Difference]: With dead ends: 42 [2022-12-14 09:36:18,727 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 09:36:18,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=242, Invalid=2620, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 09:36:18,729 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:36:18,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 167 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:36:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 09:36:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-12-14 09:36:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:36:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-12-14 09:36:18,736 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2022-12-14 09:36:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:36:18,736 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-12-14 09:36:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 14 states have (on average 2.357142857142857) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (17), 4 states have call predecessors, (17), 11 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-12-14 09:36:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-12-14 09:36:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 09:36:18,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:36:18,737 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:36:18,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:36:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:36:18,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:36:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:36:18,940 INFO L85 PathProgramCache]: Analyzing trace with hash 604281772, now seen corresponding path program 1 times [2022-12-14 09:36:18,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:36:18,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594120690] [2022-12-14 09:36:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:36:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:36:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:36:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 09:36:19,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:36:19,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594120690] [2022-12-14 09:36:19,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594120690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:36:19,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:36:19,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:36:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013027718] [2022-12-14 09:36:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:36:19,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:36:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:36:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:36:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:36:19,127 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 09:36:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:36:19,218 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-12-14 09:36:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:36:19,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2022-12-14 09:36:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:36:19,219 INFO L225 Difference]: With dead ends: 45 [2022-12-14 09:36:19,219 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 09:36:19,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:36:19,220 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:36:19,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:36:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 09:36:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-14 09:36:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:36:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-12-14 09:36:19,228 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 30 [2022-12-14 09:36:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:36:19,228 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-12-14 09:36:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 09:36:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 09:36:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 09:36:19,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:36:19,229 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 09:36:19,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:36:19,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:36:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:36:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash -111059124, now seen corresponding path program 1 times [2022-12-14 09:36:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:36:19,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141973728] [2022-12-14 09:36:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:36:19,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:36:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:36:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:36:20,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:36:20,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141973728] [2022-12-14 09:36:20,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141973728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:36:20,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:36:20,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 09:36:20,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372353778] [2022-12-14 09:36:20,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:36:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:36:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:36:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:36:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:36:20,072 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 8 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 09:36:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:36:20,232 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-12-14 09:36:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:36:20,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 39 [2022-12-14 09:36:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:36:20,233 INFO L225 Difference]: With dead ends: 49 [2022-12-14 09:36:20,233 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 09:36:20,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:36:20,234 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:36:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 109 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:36:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 09:36:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 09:36:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:36:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2022-12-14 09:36:20,242 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 39 [2022-12-14 09:36:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:36:20,243 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2022-12-14 09:36:20,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 09:36:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2022-12-14 09:36:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 09:36:20,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:36:20,244 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:36:20,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:36:20,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:36:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:36:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1588014127, now seen corresponding path program 1 times [2022-12-14 09:36:20,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:36:20,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022400377] [2022-12-14 09:36:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:36:20,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:36:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:36:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:36:21,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:36:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022400377] [2022-12-14 09:36:21,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022400377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:36:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787899060] [2022-12-14 09:36:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:36:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:36:21,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:36:21,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:36:21,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a250ff8-4b19-463e-8b9c-9daa7ec680ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:36:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:36:21,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 09:36:21,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:36:24,686 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse5 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse5)) (.cse0 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse5))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| .cse4) .cse0))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| .cse4) .cse0)) (.cse3 (+ .cse1 8))) (and (not (= .cse0 0)) (not (= .cse1 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3) .cse0) (= (select (select |c_#memory_$Pointer$.base| .cse2) .cse3) .cse4))))))) (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse10 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse10)) (.cse9 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse10))) (let ((.cse6 (select (select |c_#memory_$Pointer$.base| .cse7) .cse9)) (.cse8 (+ (select (select |c_#memory_$Pointer$.offset| .cse7) .cse9) 8))) (and (not (= .cse6 0)) (not (= .cse7 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse6) .cse8) .cse9) (= (select (select |c_#memory_$Pointer$.base| .cse6) .cse8) .cse7)))))) (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse15 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse14 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse15)) (.cse11 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse15))) (let ((.cse12 (select (select |c_#memory_$Pointer$.base| .cse14) .cse11)) (.cse13 (+ (select (select |c_#memory_$Pointer$.offset| .cse14) .cse11) 8))) (and (not (= .cse11 0)) (not (= .cse12 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse12) .cse13) .cse11) (= (select (select |c_#memory_$Pointer$.base| .cse12) .cse13) .cse14)))))) (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse21 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse16 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse21)) (.cse20 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse21))) (let ((.cse17 (select (select |c_#memory_$Pointer$.offset| .cse16) .cse20))) (let ((.cse18 (select (select |c_#memory_$Pointer$.base| .cse16) .cse20)) (.cse19 (+ .cse17 8))) (and (not (= .cse16 0)) (not (= .cse17 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse18) .cse19) .cse20) (= (select (select |c_#memory_$Pointer$.base| .cse18) .cse19) .cse16)))))))) is different from true [2022-12-14 09:36:44,834 WARN L233 SmtUtils]: Spent 18.05s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:36:46,884 WARN L859 $PredicateComparison]: unable to prove that (and (or (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse5 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse5)) (.cse0 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse5))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| .cse4) .cse0))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| .cse4) .cse0)) (.cse3 (+ .cse1 8))) (and (not (= .cse0 0)) (not (= .cse1 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3) .cse0) (= (select (select |c_#memory_$Pointer$.base| .cse2) .cse3) .cse4))))))) (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse10 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse10)) (.cse9 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse10))) (let ((.cse6 (select (select |c_#memory_$Pointer$.base| .cse7) .cse9)) (.cse8 (+ (select (select |c_#memory_$Pointer$.offset| .cse7) .cse9) 8))) (and (not (= .cse6 0)) (not (= .cse7 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse6) .cse8) .cse9) (= (select (select |c_#memory_$Pointer$.base| .cse6) .cse8) .cse7)))))) (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse15 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse14 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse15)) (.cse11 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse15))) (let ((.cse12 (select (select |c_#memory_$Pointer$.base| .cse14) .cse11)) (.cse13 (+ (select (select |c_#memory_$Pointer$.offset| .cse14) .cse11) 8))) (and (not (= .cse11 0)) (not (= .cse12 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse12) .cse13) .cse11) (= (select (select |c_#memory_$Pointer$.base| .cse12) .cse13) .cse14)))))) (exists ((|ULTIMATE.start_aws_linked_list_prev_~node#1.base| Int) (|ULTIMATE.start_aws_linked_list_prev_~node#1.offset| Int)) (let ((.cse21 (+ |ULTIMATE.start_aws_linked_list_prev_~node#1.offset| 8))) (let ((.cse16 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse21)) (.cse20 (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_prev_~node#1.base|) .cse21))) (let ((.cse17 (select (select |c_#memory_$Pointer$.offset| .cse16) .cse20))) (let ((.cse18 (select (select |c_#memory_$Pointer$.base| .cse16) .cse20)) (.cse19 (+ .cse17 8))) (and (not (= .cse16 0)) (not (= .cse17 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse18) .cse19) .cse20) (= (select (select |c_#memory_$Pointer$.base| .cse18) .cse19) .cse16)))))))) (not (= (mod |c___VERIFIER_assert_#in~cond| 256) 0))) is different from true [2022-12-14 09:36:52,065 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1| 0)) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| Int)) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|)) (.cse1 (+ .cse2 8))) (and (= (select (select |c_#memory_$Pointer$.base| .cse0) .cse1) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) (not (= .cse2 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1)))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1| 0)) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|)) (.cse4 (+ (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|) 8))) (and (= (select (select |c_#memory_$Pointer$.base| .cse3) .cse4) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) (not (= .cse3 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| 0)) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1| Int)) (let ((.cse7 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|)) (.cse6 (+ .cse7 8))) (and (= (select (select |c_#memory_$Pointer$.base| .cse5) .cse6) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) (not (= .cse7 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| (select (select |c_#memory_$Pointer$.offset| .cse5) .cse6)))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| 0)) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1| Int)) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|)) (.cse9 (+ (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1|) 8))) (and (= (select (select |c_#memory_$Pointer$.base| .cse8) .cse9) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_1|) (not (= .cse8 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_1| (select (select |c_#memory_$Pointer$.offset| .cse8) .cse9)))))))) is different from true [2022-12-14 09:36:54,867 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|)) (.cse2 (+ .cse0 8))) (and (not (= .cse0 0)) (= (select (select |c_#memory_$Pointer$.base| .cse1) .cse2) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|))))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|)) (.cse4 (+ (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|) 8))) (and (= (select (select |c_#memory_$Pointer$.base| .cse3) .cse4) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) (not (= .cse3 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|)))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2| Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|)) (.cse6 (+ (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|) 8))) (and (= (select (select |c_#memory_$Pointer$.base| .cse5) .cse6) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) (not (= .cse5 0)) (= (select (select |c_#memory_$Pointer$.offset| .cse5) .cse6) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|)))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2| Int)) (let ((.cse7 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|))) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|)) (.cse9 (+ .cse7 8))) (and (not (= .cse7 0)) (= (select (select |c_#memory_$Pointer$.base| .cse8) .cse9) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2|) (= (select (select |c_#memory_$Pointer$.offset| .cse8) .cse9) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_2|))))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_2| 0))))) is different from true [2022-12-14 09:36:58,339 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|)) (.cse2 (+ .cse0 8))) (and (not (= .cse0 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2)) (= (select (select |c_#memory_$Pointer$.base| .cse1) .cse2) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|))))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|)) (.cse4 (+ (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|) 8))) (and (not (= .cse3 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4)) (= (select (select |c_#memory_$Pointer$.base| .cse3) .cse4) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|)))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3| Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|))) (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|)) (.cse7 (+ .cse5 8))) (and (not (= .cse5 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$.offset| .cse6) .cse7)) (= (select (select |c_#memory_$Pointer$.base| .cse6) .cse7) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|))))) (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| 0)) (exists ((|v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3| Int)) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|)) (.cse9 (+ (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3|) 8))) (and (not (= .cse8 0)) (= |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.offset_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$.offset| .cse8) .cse9)) (= (select (select |c_#memory_$Pointer$.base| .cse8) .cse9) |v_ULTIMATE.start_aws_linked_list_prev_harness_~rval~10#1.base_BEFORE_CALL_3|))))))) is different from true [2022-12-14 09:37:38,432 WARN L233 SmtUtils]: Spent 24.75s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:37:44,939 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 313 DAG size of output: 307 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 09:37:44,941 INFO L321 Elim1Store]: treesize reduction 18, result has 97.7 percent of original size [2022-12-14 09:37:44,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 45 case distinctions, treesize of input 273 treesize of output 934 [2022-12-14 09:37:45,657 INFO L217 Elim1Store]: Index analysis took 660 ms [2022-12-14 09:37:52,239 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 301 DAG size of output: 300 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 09:37:52,241 INFO L321 Elim1Store]: treesize reduction 3, result has 99.4 percent of original size [2022-12-14 09:37:52,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 45 case distinctions, treesize of input 796 treesize of output 1116