./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_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_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/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_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/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_261bc06d-9570-4924-9e4e-ad6000e78d61/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 edd3fac09d24fc037292743bb080afb788cb886b05d29648be5f73c1396cfbb6 --- 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 10:27:51,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:27:51,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:27:51,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:27:51,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:27:51,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:27:51,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:27:51,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:27:51,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:27:51,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:27:51,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:27:51,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:27:51,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:27:51,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:27:51,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:27:51,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:27:51,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:27:51,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:27:51,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:27:51,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:27:51,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:27:51,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:27:51,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:27:51,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:27:51,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:27:51,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:27:51,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:27:51,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:27:51,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:27:51,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:27:51,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:27:51,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:27:51,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:27:51,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:27:51,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:27:51,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:27:51,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:27:51,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:27:51,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:27:51,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:27:51,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:27:51,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:27:51,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:27:51,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:27:51,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:27:51,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:27:51,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:27:51,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:27:51,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:27:51,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:27:51,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:27:51,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:27:51,856 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:27:51,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:27:51,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:27:51,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:27:51,857 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:27:51,857 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:27:51,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:27:51,858 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:27:51,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:27:51,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:27:51,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:27:51,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:27:51,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:27:51,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:27:51,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:27:51,860 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:27:51,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:27:51,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:27:51,861 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:27:51,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:27:51,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:27:51,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:27:51,861 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_261bc06d-9570-4924-9e4e-ad6000e78d61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd3fac09d24fc037292743bb080afb788cb886b05d29648be5f73c1396cfbb6 [2022-12-14 10:27:52,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:27:52,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:27:52,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:27:52,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:27:52,092 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:27:52,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2022-12-14 10:27:54,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:27:55,011 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:27:55,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2022-12-14 10:27:55,040 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/data/11fb82ec2/16bcc219040c425390562eb71025e657/FLAG3337c8642 [2022-12-14 10:27:55,051 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/data/11fb82ec2/16bcc219040c425390562eb71025e657 [2022-12-14 10:27:55,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:27:55,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:27:55,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:27:55,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:27:55,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:27:55,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:27:55" (1/1) ... [2022-12-14 10:27:55,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d636f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:55, skipping insertion in model container [2022-12-14 10:27:55,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:27:55" (1/1) ... [2022-12-14 10:27:55,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:27:55,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:27:55,351 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_261bc06d-9570-4924-9e4e-ad6000e78d61/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2022-12-14 10:27:55,359 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_261bc06d-9570-4924-9e4e-ad6000e78d61/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2022-12-14 10:27:56,021 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:27:56,027 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,027 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,028 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,029 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,029 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,038 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,039 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,040 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,041 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,042 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,043 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,044 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,044 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,097 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:27:56,097 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:27:56,098 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:27:56,102 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:27:56,104 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:27:56,104 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:27:56,290 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:27:56,291 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:27:56,292 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:27:56,292 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:27:56,293 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:27:56,294 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:27:56,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:27:56,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:27:56,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:27:56,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:27:56,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:27:56,400 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:27:56,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:27:56,430 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:27:56,440 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_261bc06d-9570-4924-9e4e-ad6000e78d61/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4499,4512] [2022-12-14 10:27:56,440 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_261bc06d-9570-4924-9e4e-ad6000e78d61/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i[4559,4572] [2022-12-14 10:27:56,466 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:27:56,468 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,469 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,469 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,469 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,470 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,475 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,475 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,476 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,476 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,477 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:27:56,483 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:27:56,483 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:27:56,484 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:27:56,486 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:27:56,487 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:27:56,487 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:27:56,503 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:27:56,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:27:56,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:27:56,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:27:56,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:27:56,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:27:56,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:27:56,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:27:56,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:27:56,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:27:56,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:27:56,523 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:27:56,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:27:56,727 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:27:56,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56 WrapperNode [2022-12-14 10:27:56,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:27:56,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:27:56,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:27:56,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:27:56,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,792 INFO L138 Inliner]: procedures = 679, calls = 1045, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 224 [2022-12-14 10:27:56,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:27:56,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:27:56,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:27:56,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:27:56,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:27:56,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:27:56,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:27:56,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:27:56,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (1/1) ... [2022-12-14 10:27:56,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:27:56,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:27:56,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:27:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:27:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-12-14 10:27:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-12-14 10:27:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2022-12-14 10:27:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2022-12-14 10:27:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:27:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:27:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:27:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:27:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-12-14 10:27:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-12-14 10:27:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:27:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-12-14 10:27:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-12-14 10:27:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:27:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:27:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:27:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:27:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-12-14 10:27:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-12-14 10:27:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:27:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:27:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:27:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:27:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:27:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:27:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:27:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 10:27:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 10:27:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-12-14 10:27:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-12-14 10:27:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:27:57,100 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:27:57,101 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:27:57,372 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:27:57,471 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:27:57,471 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 10:27:57,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:27:57 BoogieIcfgContainer [2022-12-14 10:27:57,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:27:57,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:27:57,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:27:57,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:27:57,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:27:55" (1/3) ... [2022-12-14 10:27:57,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd13821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:27:57, skipping insertion in model container [2022-12-14 10:27:57,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:27:56" (2/3) ... [2022-12-14 10:27:57,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd13821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:27:57, skipping insertion in model container [2022-12-14 10:27:57,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:27:57" (3/3) ... [2022-12-14 10:27:57,480 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_front_harness.i [2022-12-14 10:27:57,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:27:57,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:27:57,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:27:57,536 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;@5ddb144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:27:57,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:27:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-14 10:27:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 10:27:57,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:27:57,548 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:27:57,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:27:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:27:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash -53848961, now seen corresponding path program 1 times [2022-12-14 10:27:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:27:57,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586674310] [2022-12-14 10:27:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:27:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:27:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:27:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-14 10:27:58,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:27:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586674310] [2022-12-14 10:27:58,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586674310] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:27:58,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666573187] [2022-12-14 10:27:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:27:58,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:27:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:27:58,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:27:58,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:27:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:27:58,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-14 10:27:58,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:27:58,351 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 18 treesize of output 19 [2022-12-14 10:27:58,371 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 18 treesize of output 19 [2022-12-14 10:27:58,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:27:58,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:27:58,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:27:58,438 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 35 treesize of output 41 [2022-12-14 10:27:58,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:27:58,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:27:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:27:58,457 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 37 treesize of output 43 [2022-12-14 10:28:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 10:28:00,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:28:00,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666573187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:28:00,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:28:00,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2022-12-14 10:28:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437956893] [2022-12-14 10:28:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:28:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:28:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:28:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:28:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:28:00,533 INFO L87 Difference]: Start difference. First operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-14 10:28:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:28:01,739 INFO L93 Difference]: Finished difference Result 245 states and 355 transitions. [2022-12-14 10:28:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:28:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 70 [2022-12-14 10:28:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:28:01,747 INFO L225 Difference]: With dead ends: 245 [2022-12-14 10:28:01,747 INFO L226 Difference]: Without dead ends: 157 [2022-12-14 10:28:01,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-12-14 10:28:01,752 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 79 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:28:01,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 579 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:28:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-14 10:28:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2022-12-14 10:28:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 79 states have internal predecessors, (93), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2022-12-14 10:28:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 212 transitions. [2022-12-14 10:28:01,800 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 212 transitions. Word has length 70 [2022-12-14 10:28:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:28:01,800 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 212 transitions. [2022-12-14 10:28:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-14 10:28:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 212 transitions. [2022-12-14 10:28:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 10:28:01,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:28:01,802 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:28:01,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:28:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 10:28:02,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:28:02,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:28:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1869393802, now seen corresponding path program 1 times [2022-12-14 10:28:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:28:02,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518355673] [2022-12-14 10:28:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:28:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:28:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:28:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-12-14 10:28:02,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:28:02,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518355673] [2022-12-14 10:28:02,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518355673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:28:02,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786433319] [2022-12-14 10:28:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:28:02,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:28:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:28:02,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:28:02,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_261bc06d-9570-4924-9e4e-ad6000e78d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:28:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:28:02,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 105 conjunts are in the unsatisfiable core [2022-12-14 10:28:02,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:28:02,415 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 6 treesize of output 5 [2022-12-14 10:28:02,524 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 18 treesize of output 19 [2022-12-14 10:28:02,538 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 18 treesize of output 19 [2022-12-14 10:28:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 10:28:02,604 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:28:02,604 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 1 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 10:28:02,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2022-12-14 10:28:02,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 10:28:02,644 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:28:02,644 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 1 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 10:28:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2022-12-14 10:28:02,671 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 10:28:02,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 10:28:02,784 INFO L321 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2022-12-14 10:28:02,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 158 [2022-12-14 10:28:02,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 138 [2022-12-14 10:28:02,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:28:02,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-12-14 10:28:02,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-14 10:28:33,238 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification that was a NOOP. DAG size: 619 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:28:57,631 WARN L233 SmtUtils]: Spent 10.85s on a formula simplification that was a NOOP. DAG size: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:29:24,925 WARN L233 SmtUtils]: Spent 11.89s on a formula simplification that was a NOOP. DAG size: 657 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:30:11,442 WARN L233 SmtUtils]: Spent 25.70s on a formula simplification that was a NOOP. DAG size: 654 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:30:54,674 WARN L233 SmtUtils]: Spent 26.86s on a formula simplification that was a NOOP. DAG size: 691 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:31:59,157 WARN L233 SmtUtils]: Spent 35.87s on a formula simplification that was a NOOP. DAG size: 692 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:32:58,281 WARN L233 SmtUtils]: Spent 38.46s on a formula simplification that was a NOOP. DAG size: 740 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:34:12,171 WARN L233 SmtUtils]: Spent 40.34s on a formula simplification that was a NOOP. DAG size: 768 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:35:20,038 WARN L233 SmtUtils]: Spent 44.62s on a formula simplification that was a NOOP. DAG size: 827 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:36:48,577 WARN L233 SmtUtils]: Spent 46.44s on a formula simplification that was a NOOP. DAG size: 882 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:37:57,429 WARN L233 SmtUtils]: Spent 46.75s on a formula simplification that was a NOOP. DAG size: 939 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:39:05,806 WARN L233 SmtUtils]: Spent 46.51s on a formula simplification that was a NOOP. DAG size: 915 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:39:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 2 proven. 17 refuted. 78 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:39:08,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:39:12,340 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 16 |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset|)) (.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16)) (.cse0 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse9 (+ 8 |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset|))) (and (or (not (= |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base| 0))) (or (forall ((v_ArrVal_232 (Array Int Int)) (v_ArrVal_223 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset|) 0))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (not (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset|) 0)))) (forall ((v_ArrVal_232 (Array Int Int)) (v_ArrVal_223 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse4) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse4) 0)) (let ((.cse6 (+ |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset| 24))) (or (forall ((v_ArrVal_232 (Array Int Int)) (v_ArrVal_223 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse6) 0))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (not (= (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse6) 0))))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (= (select (select (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse9) 0)) (forall ((v_ArrVal_232 (Array Int Int)) (v_ArrVal_223 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse9) 0)))) is different from false [2022-12-14 10:39:12,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:39:12,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 380 treesize of output 457 [2022-12-14 10:39:21,317 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 338 DAG size of output: 140 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 10:39:21,318 INFO L321 Elim1Store]: treesize reduction 955, result has 23.7 percent of original size [2022-12-14 10:39:21,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 14 new quantified variables, introduced 67 case distinctions, treesize of input 852 treesize of output 2424 [2022-12-14 10:40:57,898 WARN L233 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 401 DAG size of output: 200 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 10:40:57,899 INFO L321 Elim1Store]: treesize reduction 874, result has 36.1 percent of original size [2022-12-14 10:40:57,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 76 case distinctions, treesize of input 51174 treesize of output 52499