./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:01,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:01,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:08:01,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:01,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:01,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:01,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:01,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:01,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:01,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:01,813 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:01,814 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:01,814 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:01,816 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:01,816 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:01,817 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:01,817 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:01,818 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:01,818 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:01,818 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:01,819 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:01,819 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:01,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:01,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:01,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:01,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:01,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:01,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:01,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:01,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:01,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:01,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:01,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:01,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:01,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:01,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:01,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:01,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:01,835 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:01,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:01,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:01,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:01,837 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:01,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:01,837 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2023-11-23 21:08:02,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:02,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:02,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:02,209 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:02,210 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:02,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2023-11-23 21:08:05,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:06,050 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:06,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2023-11-23 21:08:06,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/data/2238fba6a/45dce86a3cd24ec387d9def13e90a83c/FLAG089a99016 [2023-11-23 21:08:06,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/data/2238fba6a/45dce86a3cd24ec387d9def13e90a83c [2023-11-23 21:08:06,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:06,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:06,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:06,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:06,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:06,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:06,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f4a2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06, skipping insertion in model container [2023-11-23 21:08:06,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:06,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:06,553 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2023-11-23 21:08:06,563 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2023-11-23 21:08:07,576 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,580 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:07,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,131 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:08:08,132 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:08:08,134 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:08:08,135 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:08:08,137 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:08:08,138 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:08:08,138 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:08:08,139 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:08:08,140 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:08:08,140 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:08:08,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:08,497 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:08,512 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2023-11-23 21:08:08,513 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2023-11-23 21:08:08,564 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,564 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,565 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,580 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:08,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:08:08,629 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:08:08,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:08:08,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:08:08,632 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:08:08,633 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:08:08,633 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:08:08,634 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:08:08,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:08:08,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:08:08,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:08,864 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,864 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,865 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,865 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,865 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,865 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,865 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,866 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,866 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,866 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,866 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,866 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,867 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,867 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,867 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,867 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:08,876 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:08,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08 WrapperNode [2023-11-23 21:08:08,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:08,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:08,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:08,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:08,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,035 INFO L138 Inliner]: procedures = 678, calls = 1041, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 141 [2023-11-23 21:08:09,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:09,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:09,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:09,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:09,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:09,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:09,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:09,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:09,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:09,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:09,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:09,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:08:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:08:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-23 21:08:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-23 21:08:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:08:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-23 21:08:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-23 21:08:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:08:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:08:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:08:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:08:09,181 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:08:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:09,537 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:09,539 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:09,886 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:10,038 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:10,038 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:08:10,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:10 BoogieIcfgContainer [2023-11-23 21:08:10,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:10,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:10,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:10,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:10,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:06" (1/3) ... [2023-11-23 21:08:10,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258347a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:10, skipping insertion in model container [2023-11-23 21:08:10,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (2/3) ... [2023-11-23 21:08:10,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258347a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:10, skipping insertion in model container [2023-11-23 21:08:10,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:10" (3/3) ... [2023-11-23 21:08:10,053 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2023-11-23 21:08:10,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:10,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:10,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:10,127 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1efedcaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:10,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:08:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 21:08:10,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:10,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:10,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:10,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -506232321, now seen corresponding path program 1 times [2023-11-23 21:08:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:10,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814049540] [2023-11-23 21:08:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:08:11,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814049540] [2023-11-23 21:08:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814049540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633012706] [2023-11-23 21:08:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:11,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:11,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:11,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:08:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-23 21:08:11,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:11,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 21:08:11,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 21:08:12,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2023-11-23 21:08:12,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-11-23 21:08:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:08:14,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633012706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:08:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2023-11-23 21:08:14,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817127269] [2023-11-23 21:08:14,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:14,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:08:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:14,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:08:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:08:14,954 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 21:08:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:15,577 INFO L93 Difference]: Finished difference Result 124 states and 173 transitions. [2023-11-23 21:08:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:08:15,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 37 [2023-11-23 21:08:15,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:15,589 INFO L225 Difference]: With dead ends: 124 [2023-11-23 21:08:15,589 INFO L226 Difference]: Without dead ends: 81 [2023-11-23 21:08:15,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:08:15,596 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 33 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:15,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 244 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:08:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-23 21:08:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-11-23 21:08:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.288888888888889) internal successors, (58), 47 states have internal predecessors, (58), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-23 21:08:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-11-23 21:08:15,653 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 37 [2023-11-23 21:08:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:15,653 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-11-23 21:08:15,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 21:08:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-11-23 21:08:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 21:08:15,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:15,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:15,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:08:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:08:15,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:15,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1923609863, now seen corresponding path program 1 times [2023-11-23 21:08:15,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631093894] [2023-11-23 21:08:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:08:16,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631093894] [2023-11-23 21:08:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631093894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136688155] [2023-11-23 21:08:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:16,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:16,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:16,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:16,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640f5007-f868-4783-8a77-79ec475d7a18/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:08:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:16,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-23 21:08:16,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:16,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 21:08:16,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 21:08:16,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-23 21:08:16,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:16,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 21:08:16,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-23 21:08:16,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:16,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-23 21:08:16,889 INFO L349 Elim1Store]: treesize reduction 96, result has 23.2 percent of original size [2023-11-23 21:08:16,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 93 [2023-11-23 21:08:16,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:16,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 21 [2023-11-23 21:08:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:08:20,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:26,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:26,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 388 treesize of output 473 [2023-11-23 21:08:26,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:26,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 364 treesize of output 449 [2023-11-23 21:08:27,963 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-23 21:08:27,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-23 21:08:28,018 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-23 21:08:28,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-23 21:08:28,097 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-23 21:08:28,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-23 21:08:28,160 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-23 21:08:28,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-23 21:08:28,320 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-23 21:08:28,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-23 21:08:28,430 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-23 21:08:28,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 62 [2023-11-23 21:08:30,413 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-23 21:08:30,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 189 [2023-11-23 21:08:30,637 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:30,638 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:30,642 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:30,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:30,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2023-11-23 21:08:30,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:30,696 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 21:08:30,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 71 [2023-11-23 21:08:30,860 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-23 21:08:30,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 189 [2023-11-23 21:08:31,329 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-23 21:08:31,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 109 [2023-11-23 21:08:31,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:31,617 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 21:08:31,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 114 [2023-11-23 21:08:31,634 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:31,635 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:31,641 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:31,663 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 21:08:31,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2023-11-23 21:08:31,750 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-23 21:08:31,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 61 [2023-11-23 21:08:34,671 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-23 21:08:34,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 189 [2023-11-23 21:08:34,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:35,127 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:35,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 1 [2023-11-23 21:08:35,158 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:35,183 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:35,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 19 [2023-11-23 21:08:35,290 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:35,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2023-11-23 21:08:35,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 21:08:35,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:35,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:35,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 21:08:35,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-11-23 21:08:35,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:35,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:35,661 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:35,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 4 [2023-11-23 21:08:35,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:35,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 18 [2023-11-23 21:08:35,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:35,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 21:08:36,118 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2023-11-23 21:08:36,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 130 treesize of output 121 [2023-11-23 21:08:36,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 21:08:36,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:36,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-23 21:08:36,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:36,421 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-11-23 21:08:36,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 40 [2023-11-23 21:08:36,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:36,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-23 21:08:36,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 4 [2023-11-23 21:08:37,522 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse12 (+ 16 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|)) (.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse6 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse8 (+ 8 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|))) (and (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_DerPreprocessor_77 Int) (v_DerPreprocessor_78 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (v_subst_6 Int) (v_subst_2 Int) (v_subst_1 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse0 (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_77)) (.cse1 (store (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_15) v_subst_2 v_DerPreprocessor_16))) (or (not (= (store (store .cse0 v_subst_6 (select .cse1 v_subst_6)) v_subst_2 v_DerPreprocessor_16) .cse1)) (not (= (select v_arrayElimArr_9 v_subst_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (not (= (select (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= v_DerPreprocessor_77 (select (store .cse0 v_subst_6 v_DerPreprocessor_78) v_subst_1))) (not (= v_DerPreprocessor_15 (select .cse1 v_subst_1))) (not (= (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0))))))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_subst_6 Int) (v_subst_4 Int) (v_subst_1 Int) (v_DerPreprocessor_84 Int) (v_DerPreprocessor_41 Int)) (let ((.cse10 (store v_arrayElimArr_10 v_subst_4 v_DerPreprocessor_84))) (let ((.cse9 (store (store .cse10 v_subst_6 v_DerPreprocessor_41) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|))) (or (= v_subst_4 v_subst_1) (= (select (select (let ((.cse7 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_41 (select .cse9 v_subst_6))) (not (= v_DerPreprocessor_84 (select (store .cse10 v_subst_6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_4))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_4))) (not (= .cse9 (store (store v_arrayElimArr_10 v_subst_4 (select .cse9 v_subst_4)) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|))))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_7 (Array Int Int)) (v_subst_6 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_7 v_subst_6))) (= (select (select (let ((.cse11 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_7))) (store .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse12) 0) (forall ((v_DerPreprocessor_50 Int) (v_subst_1 Int)) (not (= v_DerPreprocessor_50 (select (store (store v_arrayElimArr_7 v_subst_6 v_DerPreprocessor_50) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_6)))))))) (or (not (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 0))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_2 Int) (v_DerPreprocessor_75 Int) (v_subst_1 Int) (v_DerPreprocessor_76 Int)) (let ((.cse14 (store (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14)) (.cse15 (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_75))) (or (= (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse13 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_13 (select .cse14 v_subst_1))) (not (= (store (store .cse15 v_subst_6 (select .cse14 v_subst_6)) v_subst_2 v_DerPreprocessor_14) .cse14)) (not (= v_DerPreprocessor_75 (select (store .cse15 v_subst_6 v_DerPreprocessor_76) v_subst_1)))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_5 Int) (v_subst_2 Int) (v_DerPreprocessor_73 Int) (v_DerPreprocessor_74 Int)) (or (= (select (select (let ((.cse16 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse16 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse16 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_73 (select (store (store v_arrayElimArr_6 v_subst_2 v_DerPreprocessor_73) v_subst_5 v_DerPreprocessor_74) v_subst_2))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_DerPreprocessor_77 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_DerPreprocessor_78 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (v_subst_5 Int) (v_subst_2 Int) (v_subst_1 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse17 (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_77)) (.cse18 (store (store v_arrayElimArr_4 v_subst_1 v_DerPreprocessor_15) v_subst_2 v_DerPreprocessor_16))) (or (not (= v_DerPreprocessor_77 (select (store .cse17 v_subst_5 v_DerPreprocessor_78) v_subst_1))) (not (= (store (store .cse17 v_subst_5 (select .cse18 v_subst_5)) v_subst_2 v_DerPreprocessor_16) .cse18)) (not (= (select v_arrayElimArr_9 v_subst_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (not (= (select (select (let ((.cse19 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse19 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse19 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= v_DerPreprocessor_15 (select .cse18 v_subst_1))) (not (= (select (select (let ((.cse20 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_DerPreprocessor_39 Int) (v_subst_6 Int) (v_subst_5 Int) (v_DerPreprocessor_86 Int) (v_subst_1 Int)) (let ((.cse21 (store (store v_arrayElimArr_10 v_subst_5 v_DerPreprocessor_39) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (.cse22 (store v_arrayElimArr_10 v_subst_5 v_DerPreprocessor_86))) (or (not (= (select .cse21 v_subst_5) v_DerPreprocessor_39)) (not (= (store (store .cse22 v_subst_6 (select .cse21 v_subst_6)) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse21)) (= (select (select (let ((.cse23 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse23 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse23 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_86 (select (store .cse22 v_subst_6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_5))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_5)))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_69 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_DerPreprocessor_71 Int) (v_subst_5 Int) (v_DerPreprocessor_72 Int) (v_subst_3 Int) (v_DerPreprocessor_70 Int) (v_subst_2 Int) (v_subst_1 Int)) (let ((.cse25 (store (store (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_69) v_subst_2 v_DerPreprocessor_70) v_subst_1 v_DerPreprocessor_71) v_subst_5 v_DerPreprocessor_72))) (or (= v_subst_3 v_subst_2) (= (select (select (let ((.cse24 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse24 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse24 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= .cse25 (store (store v_arrayElimArr_6 v_subst_3 (select .cse25 v_subst_3)) v_subst_5 v_DerPreprocessor_72))) (= v_subst_5 v_subst_3) (not (= (select .cse25 v_subst_1) v_DerPreprocessor_71)) (not (= v_DerPreprocessor_70 (select .cse25 v_subst_2))) (= v_subst_3 v_subst_1)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_2 Int)) (or (= (select (select (let ((.cse26 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse26 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse26 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_13 (select (store (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14) v_subst_6))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (let ((.cse28 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 24))) (or (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_arrayElimArr_3 (Array Int Int)) (v_prenex_1 Int)) (not (= (select (select (let ((.cse27 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_3))) (store .cse27 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse27 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse28) 0))) (= v_ArrVal_175 0) (forall ((v_arrayElimArr_8 (Array Int Int)) (v_subst_5 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_5))) (not (= (select (select (let ((.cse29 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse29 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse29 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse28) 0)))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_5 Int) (v_DerPreprocessor_75 Int) (v_subst_2 Int) (v_subst_1 Int) (v_DerPreprocessor_76 Int)) (let ((.cse31 (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_75)) (.cse32 (store (store v_arrayElimArr_6 v_subst_1 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14))) (or (= (select (select (let ((.cse30 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse30 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse30 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_75 (select (store .cse31 v_subst_5 v_DerPreprocessor_76) v_subst_1))) (not (= v_DerPreprocessor_13 (select .cse32 v_subst_1))) (not (= (store (store .cse31 v_subst_5 (select .cse32 v_subst_5)) v_subst_2 v_DerPreprocessor_14) .cse32))))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_2 Int) (v_DerPreprocessor_73 Int) (v_DerPreprocessor_74 Int)) (or (= (select (select (let ((.cse33 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse33 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse33 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= (select (store (store v_arrayElimArr_6 v_subst_2 v_DerPreprocessor_73) v_subst_6 v_DerPreprocessor_74) v_subst_2) v_DerPreprocessor_73)))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_5 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_ArrVal_182 Int)) (= (select (select (let ((.cse34 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_5))) (store .cse34 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse34 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_182))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse12) 0)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_DerPreprocessor_77 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_DerPreprocessor_78 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (v_subst_6 Int) (v_subst_5 Int) (v_subst_2 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse36 (store v_arrayElimArr_4 v_subst_6 v_DerPreprocessor_77)) (.cse35 (store (store v_arrayElimArr_4 v_subst_6 v_DerPreprocessor_15) v_subst_2 v_DerPreprocessor_16))) (or (not (= (select .cse35 v_subst_6) v_DerPreprocessor_15)) (not (= v_DerPreprocessor_77 (select (store .cse36 v_subst_5 v_DerPreprocessor_78) v_subst_6))) (not (= (select (select (let ((.cse37 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse37 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse37 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= (select (select (let ((.cse38 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse38 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse38 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|) 0)) (not (= (select v_arrayElimArr_9 v_subst_6) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (not (= (store (store .cse36 v_subst_5 (select .cse35 v_subst_5)) v_subst_2 v_DerPreprocessor_16) .cse35))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_DerPreprocessor_29 Int) (v_subst_5 Int) (v_subst_1 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_1))) (= (select (select (let ((.cse39 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse4 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse39 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse39 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_29 (select (store (store v_arrayElimArr_10 v_subst_1 v_DerPreprocessor_29) v_subst_5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_1))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_subst_5 Int) (v_DerPreprocessor_75 Int) (v_subst_2 Int) (v_DerPreprocessor_76 Int)) (let ((.cse41 (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_75)) (.cse42 (store (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14))) (or (= (select (select (let ((.cse40 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse40 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse40 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_75 (select (store .cse41 v_subst_5 v_DerPreprocessor_76) v_subst_6))) (not (= v_DerPreprocessor_13 (select .cse42 v_subst_6))) (not (= .cse42 (store (store .cse41 v_subst_5 (select .cse42 v_subst_5)) v_subst_2 v_DerPreprocessor_14)))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_69 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_6 Int) (v_DerPreprocessor_71 Int) (v_subst_5 Int) (v_DerPreprocessor_72 Int) (v_subst_3 Int) (v_DerPreprocessor_70 Int) (v_subst_2 Int)) (let ((.cse44 (store (store (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_69) v_subst_2 v_DerPreprocessor_70) v_subst_6 v_DerPreprocessor_71) v_subst_5 v_DerPreprocessor_72))) (or (= v_subst_3 v_subst_2) (= (select (select (let ((.cse43 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse43 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse43 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_70 (select .cse44 v_subst_2))) (not (= v_DerPreprocessor_71 (select .cse44 v_subst_6))) (not (= (store (store v_arrayElimArr_6 v_subst_3 (select .cse44 v_subst_3)) v_subst_5 v_DerPreprocessor_72) .cse44)) (= v_subst_5 v_subst_3) (= v_subst_6 v_subst_3)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_69 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_DerPreprocessor_71 Int) (v_subst_6 Int) (v_DerPreprocessor_72 Int) (v_subst_3 Int) (v_DerPreprocessor_70 Int) (v_subst_2 Int) (v_subst_1 Int)) (let ((.cse46 (store (store (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_69) v_subst_2 v_DerPreprocessor_70) v_subst_1 v_DerPreprocessor_71) v_subst_6 v_DerPreprocessor_72))) (or (= v_subst_3 v_subst_2) (= (select (select (let ((.cse45 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse45 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse45 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= (select .cse46 v_subst_2) v_DerPreprocessor_70)) (not (= (store (store v_arrayElimArr_6 v_subst_3 (select .cse46 v_subst_3)) v_subst_6 v_DerPreprocessor_72) .cse46)) (= v_subst_3 v_subst_1) (not (= v_DerPreprocessor_71 (select .cse46 v_subst_1))) (= v_subst_6 v_subst_3)))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int) (v_subst_5 Int) (v_subst_2 Int)) (or (= (select (select (let ((.cse47 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse6 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse47 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse47 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse3 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse8) 0) (not (= v_DerPreprocessor_13 (select (store (store v_arrayElimArr_6 v_subst_5 v_DerPreprocessor_13) v_subst_2 v_DerPreprocessor_14) v_subst_5))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))))) is different from false [2023-11-23 21:08:39,247 INFO L349 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2023-11-23 21:08:39,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 144 [2023-11-23 21:08:39,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:39,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 172 [2023-11-23 21:08:39,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 133 [2023-11-23 21:08:39,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-23 21:08:39,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:39,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 83 [2023-11-23 21:08:39,653 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,664 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,670 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:39,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 46 [2023-11-23 21:08:39,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2023-11-23 21:08:39,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2023-11-23 21:08:39,716 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,717 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,725 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-23 21:08:39,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 45 [2023-11-23 21:08:39,741 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,748 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,754 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,762 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,766 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 21:08:39,771 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,777 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,782 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,788 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,795 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,796 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,801 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,808 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,815 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,816 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,821 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,827 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,828 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,832 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 21:08:39,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,848 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,853 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,858 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,864 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,870 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,877 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,878 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,883 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,898 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,903 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,911 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 21:08:39,923 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,935 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,942 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,943 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,947 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 21:08:39,953 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,960 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,966 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,976 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,977 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,981 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:39,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:39,993 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,993 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:08:39,998 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-23 21:08:39,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-23 21:08:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 1 not checked. [2023-11-23 21:08:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136688155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:40,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [55983594] [2023-11-23 21:08:40,164 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-23 21:08:40,165 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:40,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:40,176 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:40,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:08:47,035 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 68 for LOIs [2023-11-23 21:08:47,120 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 6 for LOIs [2023-11-23 21:08:47,123 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 95 for LOIs [2023-11-23 21:08:47,147 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:08:49,128 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~i~1#1_27| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~length~1#1_19| Int)) (<= (mod |v_ULTIMATE.start_ensure_linked_list_is_allocated_~length~1#1_19| 18446744073709551616) (mod |v_ULTIMATE.start_ensure_linked_list_is_allocated_~i~1#1_27| 18446744073709551616))) (exists ((|v_#memory_int_30| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_72| (Array Int (Array Int Int))) (|v_#memory_real_47| (Array Int (Array Int Real))) (|v_#memory_real_27| (Array Int (Array Int Real))) (|v_#memory_$Pointer$.base_72| (Array Int (Array Int Int))) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_18| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| Int) (|v_#memory_int_50| (Array Int (Array Int Int)))) (let ((.cse1 (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_18| 24))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1))) (and (= (let ((.cse0 (store |v_#memory_$Pointer$.base_72| .cse2 (store (select |v_#memory_$Pointer$.base_72| .cse2) .cse3 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|)))) (store .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 .cse2))) |c_#memory_$Pointer$.base|) (= |c_#memory_real| (store |v_#memory_real_27| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select |v_#memory_real_27| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 (select (select |c_#memory_real| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1)))) (= (let ((.cse4 (store |v_#memory_$Pointer$.offset_72| .cse2 (store (select |v_#memory_$Pointer$.offset_72| .cse2) .cse3 (+ 16 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_18|))))) (store .cse4 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select .cse4 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 .cse3))) |c_#memory_$Pointer$.offset|) (= (store |v_#memory_int_50| .cse2 (store (select |v_#memory_int_50| .cse2) .cse3 (select (select |v_#memory_int_30| .cse2) .cse3))) |v_#memory_int_30|) (= |c_#memory_int| (store |v_#memory_int_30| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select |v_#memory_int_30| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 (select (select |c_#memory_int| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1)))) (= |v_#memory_real_27| (store |v_#memory_real_47| .cse2 (store (select |v_#memory_real_47| .cse2) .cse3 (select (select |v_#memory_real_27| .cse2) .cse3))))))))) is different from true [2023-11-23 21:08:49,144 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~i~1#1_27| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~length~1#1_19| Int)) (<= (mod |v_ULTIMATE.start_ensure_linked_list_is_allocated_~length~1#1_19| 18446744073709551616) (mod |v_ULTIMATE.start_ensure_linked_list_is_allocated_~i~1#1_27| 18446744073709551616))) (exists ((|v_#memory_$Pointer$.offset_72| (Array Int (Array Int Int))) (|v_#memory_int_30| (Array Int (Array Int Int))) (|v_#memory_real_47| (Array Int (Array Int Real))) (|v_#memory_real_27| (Array Int (Array Int Real))) (|v_#memory_$Pointer$.base_72| (Array Int (Array Int Int))) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_18| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| Int) (|v_#memory_int_50| (Array Int (Array Int Int)))) (let ((.cse1 (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_18| 24))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1))) (and (= (let ((.cse0 (store |v_#memory_$Pointer$.base_72| .cse2 (store (select |v_#memory_$Pointer$.base_72| .cse2) .cse3 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|)))) (store .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 .cse2))) |c_#memory_$Pointer$.base|) (= |c_#memory_real| (store |v_#memory_real_27| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select |v_#memory_real_27| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 (select (select |c_#memory_real| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1)))) (= (let ((.cse4 (store |v_#memory_$Pointer$.offset_72| .cse2 (store (select |v_#memory_$Pointer$.offset_72| .cse2) .cse3 (+ 16 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset_18|))))) (store .cse4 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select .cse4 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 .cse3))) |c_#memory_$Pointer$.offset|) (= (store |v_#memory_int_50| .cse2 (store (select |v_#memory_int_50| .cse2) .cse3 (select (select |v_#memory_int_30| .cse2) .cse3))) |v_#memory_int_30|) (= |c_#memory_int| (store |v_#memory_int_30| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18| (store (select |v_#memory_int_30| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1 (select (select |c_#memory_int| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base_18|) .cse1)))) (= |v_#memory_real_27| (store |v_#memory_real_47| .cse2 (store (select |v_#memory_real_47| .cse2) .cse3 (select (select |v_#memory_real_27| .cse2) .cse3))))))))) is different from true [2023-11-23 21:08:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [55983594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:49,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:08:49,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 10, 9] total 29 [2023-11-23 21:08:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063967402] [2023-11-23 21:08:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:49,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:08:49,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:08:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=574, Unknown=4, NotChecked=150, Total=812 [2023-11-23 21:08:49,411 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 11 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7)