./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX --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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:51:44,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:51:45,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:51:45,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:51:45,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:51:45,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:51:45,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:51:45,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:51:45,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:51:45,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:51:45,111 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:51:45,112 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:51:45,112 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:51:45,114 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:51:45,115 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:51:45,115 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:51:45,116 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:51:45,116 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:51:45,117 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:51:45,117 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:51:45,118 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:51:45,118 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:51:45,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:51:45,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:51:45,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:51:45,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:51:45,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:51:45,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:51:45,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:51:45,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:51:45,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:51:45,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:51:45,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:51:45,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:45,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:51:45,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:51:45,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:51:45,127 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:51:45,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:51:45,128 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:51:45,128 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:51:45,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:51:45,129 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_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2023-11-12 00:51:45,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:51:45,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:51:45,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:51:45,484 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:51:45,485 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:51:45,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2023-11-12 00:51:48,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:51:49,297 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:51:49,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2023-11-12 00:51:49,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/data/65f638a7e/319193b781a34d1ea42d1599560c6bb0/FLAG1f8e9b4fd [2023-11-12 00:51:49,361 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/data/65f638a7e/319193b781a34d1ea42d1599560c6bb0 [2023-11-12 00:51:49,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:51:49,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:51:49,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:49,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:51:49,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:51:49,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:49" (1/1) ... [2023-11-12 00:51:49,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cd259f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:49, skipping insertion in model container [2023-11-12 00:51:49,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:49" (1/1) ... [2023-11-12 00:51:49,518 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:51:49,815 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_929346a2-56b6-4486-be7d-183b799e8fb0/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2023-11-12 00:51:49,824 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_929346a2-56b6-4486-be7d-183b799e8fb0/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2023-11-12 00:51:50,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,841 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,842 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,843 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,845 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,864 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,871 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,872 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,875 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,901 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,903 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:50,906 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,338 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:51:51,340 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:51:51,342 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:51:51,343 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:51:51,345 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:51:51,346 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:51:51,347 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:51:51,348 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:51:51,349 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:51:51,349 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:51:51,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:51,629 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:51:51,659 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_929346a2-56b6-4486-be7d-183b799e8fb0/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2023-11-12 00:51:51,660 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_929346a2-56b6-4486-be7d-183b799e8fb0/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2023-11-12 00:51:51,756 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,762 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,762 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,767 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,768 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,779 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,785 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,787 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,787 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,789 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,791 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,792 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,793 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:51,860 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:51:51,861 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:51:51,862 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:51:51,863 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:51:51,865 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:51:51,867 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:51:51,868 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:51:51,868 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:51:51,869 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:51:51,870 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:51:51,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:52,187 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,188 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,188 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,188 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,188 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,188 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,189 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,189 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,189 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,189 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,189 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,189 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,190 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,191 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,191 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,191 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:52,199 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:51:52,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52 WrapperNode [2023-11-12 00:51:52,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:52,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:52,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:51:52,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:51:52,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,403 INFO L138 Inliner]: procedures = 678, calls = 1046, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 224 [2023-11-12 00:51:52,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:52,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:51:52,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:51:52,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:51:52,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:51:52,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:51:52,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:51:52,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:51:52,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (1/1) ... [2023-11-12 00:51:52,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:52,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:51:52,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:51:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 00:51:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 00:51:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2023-11-12 00:51:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2023-11-12 00:51:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:51:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:51:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:51:52,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:51:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-12 00:51:52,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-12 00:51:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:51:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-12 00:51:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-12 00:51:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:51:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:51:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:51:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:51:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-12 00:51:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-12 00:51:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:51:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:51:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:51:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:51:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:51:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:51:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:51:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:51:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:51:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-12 00:51:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-12 00:51:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:51:52,976 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:51:52,985 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:51:53,472 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:51:53,642 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:51:53,643 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:51:53,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:51:53 BoogieIcfgContainer [2023-11-12 00:51:53,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:51:53,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:51:53,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:51:53,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:51:53,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:51:49" (1/3) ... [2023-11-12 00:51:53,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbb24e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:51:53, skipping insertion in model container [2023-11-12 00:51:53,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:52" (2/3) ... [2023-11-12 00:51:53,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbb24e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:51:53, skipping insertion in model container [2023-11-12 00:51:53,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:51:53" (3/3) ... [2023-11-12 00:51:53,663 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2023-11-12 00:51:53,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:51:53,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:51:53,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:51:53,773 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;@3ffafc82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:51:53,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:51:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-12 00:51:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-12 00:51:53,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:53,795 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:51:53,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:51:53,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash -53848961, now seen corresponding path program 1 times [2023-11-12 00:51:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269269159] [2023-11-12 00:51:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-12 00:51:54,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269269159] [2023-11-12 00:51:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269269159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:51:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650347931] [2023-11-12 00:51:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:54,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:51:54,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:54,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:51:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:51:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:55,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-12 00:51:55,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:51:55,515 INFO L351 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 [2023-11-12 00:51:55,562 INFO L351 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 [2023-11-12 00:51:55,716 INFO L351 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 [2023-11-12 00:51:55,740 INFO L351 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 [2023-11-12 00:52:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-12 00:52:00,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:52:00,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650347931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:00,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:52:00,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2023-11-12 00:52:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835876688] [2023-11-12 00:52:00,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:00,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:52:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:01,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:52:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:52:01,011 INFO L87 Difference]: Start difference. First operand has 99 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-12 00:52:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:02,694 INFO L93 Difference]: Finished difference Result 245 states and 355 transitions. [2023-11-12 00:52:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:52:02,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 70 [2023-11-12 00:52:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:02,707 INFO L225 Difference]: With dead ends: 245 [2023-11-12 00:52:02,707 INFO L226 Difference]: Without dead ends: 157 [2023-11-12 00:52:02,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 20 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:52:02,716 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 48 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:02,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 619 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:52:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-12 00:52:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2023-11-12 00:52:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 79 states have internal predecessors, (93), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-12 00:52:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 212 transitions. [2023-11-12 00:52:02,801 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 212 transitions. Word has length 70 [2023-11-12 00:52:02,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:02,802 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 212 transitions. [2023-11-12 00:52:02,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-12 00:52:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 212 transitions. [2023-11-12 00:52:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:52:02,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:02,808 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:02,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:52:03,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:52:03,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:52:03,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1869393802, now seen corresponding path program 1 times [2023-11-12 00:52:03,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:03,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111514977] [2023-11-12 00:52:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-12 00:52:03,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111514977] [2023-11-12 00:52:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111514977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:52:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699314782] [2023-11-12 00:52:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:03,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:52:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:03,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:52:03,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929346a2-56b6-4486-be7d-183b799e8fb0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:52:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:03,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-12 00:52:03,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:52:03,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:52:03,942 INFO L351 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 [2023-11-12 00:52:03,963 INFO L351 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 [2023-11-12 00:52:04,062 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 00:52:04,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 00:52:04,071 INFO L351 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-12 00:52:04,077 INFO L351 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 [2023-11-12 00:52:04,091 INFO L351 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 [2023-11-12 00:52:04,099 INFO L351 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 [2023-11-12 00:52:04,231 INFO L322 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2023-11-12 00:52:04,231 INFO L351 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 141 treesize of output 96 [2023-11-12 00:52:04,257 INFO L351 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 70 treesize of output 36 [2023-11-12 00:52:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-12 00:52:09,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:52:16,431 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:52:16,431 INFO L351 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 404 treesize of output 481 [2023-11-12 00:52:17,219 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:52:17,220 INFO L351 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 [2023-11-12 00:52:17,974 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:17,974 INFO L351 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 [2023-11-12 00:52:18,059 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:18,059 INFO L351 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 [2023-11-12 00:52:18,164 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:18,164 INFO L351 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 [2023-11-12 00:52:18,344 INFO L217 Elim1Store]: Index analysis took 108 ms [2023-11-12 00:52:18,360 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:18,361 INFO L351 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 [2023-11-12 00:52:18,675 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:18,676 INFO L351 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 [2023-11-12 00:52:19,028 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:19,028 INFO L351 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 [2023-11-12 00:52:19,123 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-12 00:52:19,124 INFO L351 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 37 treesize of output 26 [2023-11-12 00:52:19,291 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-12 00:52:19,292 INFO L351 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 37 treesize of output 26 [2023-11-12 00:52:19,331 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-12 00:52:19,331 INFO L351 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 37 treesize of output 26 [2023-11-12 00:52:19,367 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-12 00:52:19,368 INFO L351 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 37 treesize of output 26 [2023-11-12 00:52:19,457 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-12 00:52:19,458 INFO L351 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 37 treesize of output 26 [2023-11-12 00:52:19,568 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 00:52:19,568 INFO L351 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 51 treesize of output 64 [2023-11-12 00:52:21,185 INFO L351 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 24 treesize of output 22 [2023-11-12 00:52:21,250 INFO L351 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 24 treesize of output 22 [2023-11-12 00:52:21,343 INFO L351 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 24 treesize of output 22 [2023-11-12 00:52:21,372 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-12 00:52:21,373 INFO L351 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 23 treesize of output 6 [2023-11-12 00:52:21,685 INFO L351 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 [2023-11-12 00:52:21,803 INFO L322 Elim1Store]: treesize reduction 95, result has 35.8 percent of original size [2023-11-12 00:52:21,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 255 treesize of output 284 [2023-11-12 00:52:22,019 INFO L322 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2023-11-12 00:52:22,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 108 treesize of output 100 [2023-11-12 00:52:22,055 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 00:52:22,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2023-11-12 00:52:22,259 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-12 00:52:22,259 INFO L351 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 [2023-11-12 00:52:22,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 4 [2023-11-12 00:52:22,458 INFO L322 Elim1Store]: treesize reduction 95, result has 35.8 percent of original size [2023-11-12 00:52:22,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 255 treesize of output 284 [2023-11-12 00:52:23,065 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-12 00:52:23,066 INFO L351 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 448 treesize of output 448 [2023-11-12 00:52:23,362 INFO L322 Elim1Store]: treesize reduction 95, result has 35.8 percent of original size [2023-11-12 00:52:23,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 255 treesize of output 284 [2023-11-12 00:52:23,563 INFO L322 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-12 00:52:23,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 82 [2023-11-12 00:52:23,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-12 00:52:23,603 INFO L322 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-12 00:52:23,603 INFO L351 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 45 treesize of output 40 [2023-11-12 00:52:26,262 INFO L322 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2023-11-12 00:52:26,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 242 treesize of output 228 [2023-11-12 00:52:26,293 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:52:26,293 INFO L351 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 239 treesize of output 209 [2023-11-12 00:52:26,606 INFO L322 Elim1Store]: treesize reduction 326, result has 20.5 percent of original size [2023-11-12 00:52:26,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 294 treesize of output 402 [2023-11-12 00:52:26,982 INFO L351 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 7 treesize of output 3 [2023-11-12 00:52:27,382 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:52:27,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 181