./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_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_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/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_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/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_0b023af3-79d7-4f30-a864-bdfdddc637b3/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 f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:18,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:18,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 01:03:18,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:18,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:18,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:18,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:18,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:18,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:18,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:18,722 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:18,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:18,724 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:18,726 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:18,727 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:18,727 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:18,727 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:18,728 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:18,728 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:18,729 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:18,736 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:18,737 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:18,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:18,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:18,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:18,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:18,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:18,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:18,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:18,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:18,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:18,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:18,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:18,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:18,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:18,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:18,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:18,744 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:18,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:18,744 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:18,744 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:18,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:18,745 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_0b023af3-79d7-4f30-a864-bdfdddc637b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 [2023-11-12 01:03:19,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:19,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:19,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:19,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:19,157 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:19,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2023-11-12 01:03:22,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:23,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:23,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2023-11-12 01:03:23,102 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/data/9e9bd5396/a23571c4f92c4d2db60455334aa4bf97/FLAG966e0ed5b [2023-11-12 01:03:23,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/data/9e9bd5396/a23571c4f92c4d2db60455334aa4bf97 [2023-11-12 01:03:23,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:23,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:23,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:23,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:23,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:23,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bfc4a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23, skipping insertion in model container [2023-11-12 01:03:23,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:23,647 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_0b023af3-79d7-4f30-a864-bdfdddc637b3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2023-11-12 01:03:23,655 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_0b023af3-79d7-4f30-a864-bdfdddc637b3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2023-11-12 01:03:24,731 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,733 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,734 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,735 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,737 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,758 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,759 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,766 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,768 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,780 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,783 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,785 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:24,789 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,441 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 01:03:25,443 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 01:03:25,445 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 01:03:25,447 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 01:03:25,450 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 01:03:25,451 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 01:03:25,452 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 01:03:25,453 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 01:03:25,454 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 01:03:25,456 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 01:03:25,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:25,812 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:25,847 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_0b023af3-79d7-4f30-a864-bdfdddc637b3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2023-11-12 01:03:25,851 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_0b023af3-79d7-4f30-a864-bdfdddc637b3/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2023-11-12 01:03:25,969 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,970 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,971 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,972 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,973 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,995 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,996 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,998 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:25,999 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:26,005 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:26,010 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:26,010 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:26,011 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:03:26,088 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 01:03:26,089 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 01:03:26,090 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 01:03:26,091 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 01:03:26,092 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 01:03:26,093 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 01:03:26,094 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 01:03:26,094 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 01:03:26,095 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 01:03:26,096 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 01:03:26,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:26,353 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,354 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,354 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,354 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,354 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,354 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,355 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,355 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,355 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,355 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,355 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,355 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,356 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,361 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,361 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,361 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:26,369 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:26,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26 WrapperNode [2023-11-12 01:03:26,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:26,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:26,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:26,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:26,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,629 INFO L138 Inliner]: procedures = 678, calls = 1045, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 133 [2023-11-12 01:03:26,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:26,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:26,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:26,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:26,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:26,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:26,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:26,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:26,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (1/1) ... [2023-11-12 01:03:26,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:26,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:26,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:26,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2023-11-12 01:03:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2023-11-12 01:03:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 01:03:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 01:03:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-12 01:03:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-12 01:03:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:03:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-12 01:03:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-12 01:03:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:03:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-12 01:03:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-12 01:03:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 01:03:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 01:03:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:03:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 01:03:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 01:03:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 01:03:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2023-11-12 01:03:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2023-11-12 01:03:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:27,137 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:27,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:27,511 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:27,754 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:27,754 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 01:03:27,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:27 BoogieIcfgContainer [2023-11-12 01:03:27,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:27,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:27,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:27,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:27,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:23" (1/3) ... [2023-11-12 01:03:27,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77722678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:27, skipping insertion in model container [2023-11-12 01:03:27,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:26" (2/3) ... [2023-11-12 01:03:27,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77722678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:27, skipping insertion in model container [2023-11-12 01:03:27,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:27" (3/3) ... [2023-11-12 01:03:27,778 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2023-11-12 01:03:27,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:27,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:03:27,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:27,874 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;@42c5e628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:27,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:03:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-12 01:03:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 01:03:27,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:27,893 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:27,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:27,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1804867593, now seen corresponding path program 1 times [2023-11-12 01:03:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:27,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327251127] [2023-11-12 01:03:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:27,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 01:03:28,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327251127] [2023-11-12 01:03:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327251127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743478570] [2023-11-12 01:03:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:28,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:28,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:03:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:29,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-12 01:03:29,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:29,434 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 01:03:29,448 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 01:03:29,636 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 33 treesize of output 28 [2023-11-12 01:03:29,659 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 33 treesize of output 28 [2023-11-12 01:03:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-12 01:03:33,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743478570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:33,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:03:33,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2023-11-12 01:03:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024646115] [2023-11-12 01:03:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:33,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 01:03:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 01:03:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-12 01:03:33,879 INFO L87 Difference]: Start difference. First operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-12 01:03:35,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:35,135 INFO L93 Difference]: Finished difference Result 188 states and 265 transitions. [2023-11-12 01:03:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 01:03:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 52 [2023-11-12 01:03:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:35,150 INFO L225 Difference]: With dead ends: 188 [2023-11-12 01:03:35,150 INFO L226 Difference]: Without dead ends: 127 [2023-11-12 01:03:35,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 01:03:35,159 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 56 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:35,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 355 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 01:03:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-12 01:03:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-11-12 01:03:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 65 states have internal predecessors, (76), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-12 01:03:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2023-11-12 01:03:35,241 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 52 [2023-11-12 01:03:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:35,242 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2023-11-12 01:03:35,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-12 01:03:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2023-11-12 01:03:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 01:03:35,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:35,247 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:35,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 01:03:35,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 01:03:35,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:35,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1899649367, now seen corresponding path program 1 times [2023-11-12 01:03:35,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:35,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293847806] [2023-11-12 01:03:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-12 01:03:35,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293847806] [2023-11-12 01:03:35,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293847806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269046530] [2023-11-12 01:03:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:35,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:35,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:35,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:35,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b023af3-79d7-4f30-a864-bdfdddc637b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:03:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:36,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-12 01:03:36,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:36,158 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 01:03:36,363 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 01:03:36,382 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 01:03:36,474 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 01:03:36,502 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 01:03:36,502 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 20 [2023-11-12 01:03:36,534 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 01:03:36,534 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 01:03:36,545 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 01:03:36,553 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 01:03:36,706 INFO L322 Elim1Store]: treesize reduction 96, result has 23.2 percent of original size [2023-11-12 01:03:36,707 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 107 treesize of output 74 [2023-11-12 01:03:36,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:03:36,730 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 37 treesize of output 32 [2023-11-12 01:03:36,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-12 01:03:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-12 01:03:40,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:47,012 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 01:03:47,013 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 01:03:47,296 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 01:03:47,298 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 01:03:47,388 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 01:03:47,388 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 01:03:47,500 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 01:03:47,500 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 01:03:47,603 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 01:03:47,604 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 01:03:47,709 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 01:03:47,709 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 01:03:48,028 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-12 01:03:48,028 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 01:03:48,746 INFO L322 Elim1Store]: treesize reduction 34, result has 54.7 percent of original size [2023-11-12 01:03:48,746 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 4 new quantified variables, introduced 8 case distinctions, treesize of input 211 treesize of output 271 [2023-11-12 01:03:48,878 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:48,878 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 17 treesize of output 13 [2023-11-12 01:03:48,941 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:48,942 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 17 treesize of output 13 [2023-11-12 01:03:48,991 INFO L351 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 8 treesize of output 6 [2023-11-12 01:03:49,022 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 8 treesize of output 6 [2023-11-12 01:03:49,114 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-12 01:03:49,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 19 [2023-11-12 01:03:49,171 INFO L322 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-12 01:03:49,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 19 [2023-11-12 01:03:49,217 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:49,218 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 17 treesize of output 13 [2023-11-12 01:03:49,315 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:49,315 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 17 treesize of output 13 [2023-11-12 01:03:49,359 INFO L322 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-12 01:03:49,360 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 2 case distinctions, treesize of input 19 treesize of output 1 [2023-11-12 01:03:49,523 INFO L322 Elim1Store]: treesize reduction 95, result has 35.8 percent of original size [2023-11-12 01:03:49,524 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 01:03:49,869 INFO L322 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2023-11-12 01:03:49,869 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 104 treesize of output 96 [2023-11-12 01:03:49,900 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:49,901 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 01:03:49,925 INFO L322 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-12 01:03:49,926 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 01:03:50,183 INFO L322 Elim1Store]: treesize reduction 95, result has 35.8 percent of original size [2023-11-12 01:03:50,183 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 139 treesize of output 228 [2023-11-12 01:03:50,380 INFO L322 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-11-12 01:03:50,381 INFO L351 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 42 [2023-11-12 01:03:50,407 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:50,408 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 26 treesize of output 22 [2023-11-12 01:03:50,537 INFO L322 Elim1Store]: treesize reduction 95, result has 35.8 percent of original size [2023-11-12 01:03:50,538 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 139 treesize of output 228 [2023-11-12 01:03:50,780 INFO L322 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2023-11-12 01:03:50,780 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 104 treesize of output 96 [2023-11-12 01:03:50,816 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 01:03:50,816 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 01:03:55,790 INFO L322 Elim1Store]: treesize reduction 78, result has 46.9 percent of original size [2023-11-12 01:03:55,791 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 141 [2023-11-12 01:03:55,866 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 01:03:55,866 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 169 treesize of output 167 [2023-11-12 01:03:55,908 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 130 treesize of output 124 [2023-11-12 01:03:56,109 INFO L322 Elim1Store]: treesize reduction 78, result has 46.9 percent of original size [2023-11-12 01:03:56,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 141 [2023-11-12 01:03:56,193 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 01:03:56,193 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 374 treesize of output 336 [2023-11-12 01:04:04,208 WARN L293 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 433 DAG size of output: 165 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-12 01:04:04,209 INFO L322 Elim1Store]: treesize reduction 1188, result has 21.9 percent of original size [2023-11-12 01:04:04,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 15 new quantified variables, introduced 71 case distinctions, treesize of input 774 treesize of output 2170