./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/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 b9c6758ce95672dce3a80ced0038fb12c5d303c7f51f11e2d6af9ddfb735b727 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:46:34,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:46:34,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:46:34,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:46:34,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:46:34,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:46:34,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:46:34,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:46:34,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:46:34,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:46:34,921 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:46:34,922 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:46:34,922 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:46:34,924 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:46:34,925 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:46:34,925 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:46:34,926 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:46:34,926 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:46:34,927 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:46:34,927 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:46:34,928 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:46:34,928 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:46:34,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:46:34,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:46:34,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:46:34,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:46:34,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:46:34,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:46:34,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:46:34,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:46:34,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:46:34,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:46:34,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:46:34,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:34,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:46:34,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:46:34,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:46:34,936 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:46:34,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:46:34,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:46:34,937 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:46:34,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:46:34,938 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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9c6758ce95672dce3a80ced0038fb12c5d303c7f51f11e2d6af9ddfb735b727 [2023-11-12 00:46:35,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:46:35,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:46:35,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:46:35,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:46:35,311 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:46:35,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i [2023-11-12 00:46:38,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:46:39,028 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:46:39,028 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i [2023-11-12 00:46:39,075 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/data/00d7b5492/844cb47321214051a1566dfc10f53571/FLAGfc94a21d4 [2023-11-12 00:46:39,090 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/data/00d7b5492/844cb47321214051a1566dfc10f53571 [2023-11-12 00:46:39,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:46:39,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:46:39,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:39,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:46:39,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:46:39,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:39" (1/1) ... [2023-11-12 00:46:39,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a1dedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:39, skipping insertion in model container [2023-11-12 00:46:39,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:39" (1/1) ... [2023-11-12 00:46:39,262 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:46:39,619 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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4495,4508] [2023-11-12 00:46:39,630 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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4555,4568] [2023-11-12 00:46:41,007 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,008 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,009 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,010 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,011 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,030 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,031 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,034 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,035 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,037 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,039 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,040 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,040 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:41,788 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:46:41,790 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:46:41,791 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:46:41,793 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:46:41,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:46:41,795 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:46:41,796 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:46:41,796 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:46:41,797 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:46:41,798 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:46:42,426 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,427 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,462 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,463 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,471 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,471 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,496 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,497 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,498 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,498 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,499 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,500 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,501 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:42,620 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:46:42,645 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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4495,4508] [2023-11-12 00:46:42,645 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_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4555,4568] [2023-11-12 00:46:42,706 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,706 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,707 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,707 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,709 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,722 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,722 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,723 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,724 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,725 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,726 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,726 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,726 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,767 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:46:42,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:46:42,769 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:46:42,770 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:46:42,771 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:46:42,771 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:46:42,772 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:46:42,773 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:46:42,774 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:46:42,774 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:46:42,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-12 00:46:42,995 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:42,996 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,005 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,006 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,009 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,010 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,025 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,026 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,026 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,027 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,027 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,027 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,029 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:46:43,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:43,283 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,283 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,283 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,283 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,284 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,284 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,284 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,284 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,284 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,284 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,285 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,285 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,285 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,285 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,285 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,285 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,286 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,286 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:46:43,293 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:46:43,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43 WrapperNode [2023-11-12 00:46:43,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:43,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:43,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:46:43,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:46:43,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,536 INFO L138 Inliner]: procedures = 773, calls = 2500, calls flagged for inlining = 69, calls inlined = 19, statements flattened = 1094 [2023-11-12 00:46:43,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:43,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:46:43,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:46:43,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:46:43,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:46:43,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:46:43,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:46:43,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:46:43,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (1/1) ... [2023-11-12 00:46:43,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:43,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:46:43,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:46:43,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 00:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:46:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-12 00:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:46:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:46:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 00:46:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 00:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:46:43,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:46:43,812 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:46:43,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:46:43,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:46:43,814 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:46:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:46:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-12 00:46:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-12 00:46:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-12 00:46:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-12 00:46:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 00:46:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 00:46:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-12 00:46:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-12 00:46:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-12 00:46:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-12 00:46:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:46:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:46:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 00:46:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 00:46:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:46:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:46:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-12 00:46:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-12 00:46:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-12 00:46:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-12 00:46:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-12 00:46:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-12 00:46:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:46:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:46:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 00:46:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 00:46:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:46:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:46:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:46:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:46:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:46:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:46:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:46:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2023-11-12 00:46:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2023-11-12 00:46:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-12 00:46:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-12 00:46:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-12 00:46:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-12 00:46:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:46:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:46:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:46:44,301 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:46:44,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:46:44,620 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2023-11-12 00:46:44,620 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true; [2023-11-12 00:46:44,661 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-12 00:46:44,707 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-12 00:46:46,914 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !true; [2023-11-12 00:46:46,915 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-12 00:46:46,946 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:46:47,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:46:47,216 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-12 00:46:47,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:47 BoogieIcfgContainer [2023-11-12 00:46:47,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:46:47,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:46:47,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:46:47,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:46:47,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:46:39" (1/3) ... [2023-11-12 00:46:47,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd11d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:47, skipping insertion in model container [2023-11-12 00:46:47,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:43" (2/3) ... [2023-11-12 00:46:47,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd11d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:47, skipping insertion in model container [2023-11-12 00:46:47,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:47" (3/3) ... [2023-11-12 00:46:47,234 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness_negated.i [2023-11-12 00:46:47,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:46:47,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:46:47,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:46:47,361 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;@5c8b1bda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:46:47,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:46:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-12 00:46:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-12 00:46:47,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:47,384 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 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, 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, 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 00:46:47,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:47,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125556, now seen corresponding path program 1 times [2023-11-12 00:46:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097495419] [2023-11-12 00:46:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:47,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:47,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:46:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635764782] [2023-11-12 00:46:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:47,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:46:47,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:46:47,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:46:47,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:46:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:48,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:46:48,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:46:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-12 00:46:48,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:46:48,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097495419] [2023-11-12 00:46:48,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:46:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635764782] [2023-11-12 00:46:48,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635764782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:48,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:48,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:46:48,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951032249] [2023-11-12 00:46:48,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:46:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:46:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:46:49,025 INFO L87 Difference]: Start difference. First operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 00:46:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:49,774 INFO L93 Difference]: Finished difference Result 488 states and 698 transitions. [2023-11-12 00:46:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:46:49,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 127 [2023-11-12 00:46:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:49,791 INFO L225 Difference]: With dead ends: 488 [2023-11-12 00:46:49,791 INFO L226 Difference]: Without dead ends: 259 [2023-11-12 00:46:49,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:46:49,801 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:46:49,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1200 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:46:49,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-12 00:46:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-11-12 00:46:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 145 states have internal predecessors, (170), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2023-11-12 00:46:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 343 transitions. [2023-11-12 00:46:49,885 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 343 transitions. Word has length 127 [2023-11-12 00:46:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:46:49,887 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 343 transitions. [2023-11-12 00:46:49,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 00:46:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 343 transitions. [2023-11-12 00:46:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-12 00:46:49,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:49,893 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 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, 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, 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 00:46:49,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:46:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:46:50,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:50,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1317238452, now seen corresponding path program 1 times [2023-11-12 00:46:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:50,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074338310] [2023-11-12 00:46:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-12 00:46:53,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:46:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074338310] [2023-11-12 00:46:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074338310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:46:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593745635] [2023-11-12 00:46:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:53,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:46:53,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:46:53,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:46:53,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b13ff5-3561-4601-8c3e-ac13dcb6ea52/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:46:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:53,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 2609 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-12 00:46:53,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:46:54,182 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 15 treesize of output 1 [2023-11-12 00:46:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-12 00:46:54,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:46:54,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593745635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:54,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:46:54,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2023-11-12 00:46:54,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361114997] [2023-11-12 00:46:54,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:46:54,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:46:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:46:54,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:46:54,730 INFO L87 Difference]: Start difference. First operand 259 states and 343 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-12 00:46:58,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-12 00:47:00,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:02,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:04,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:06,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:08,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:10,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:13,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:15,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:17,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:20,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:22,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:24,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:26,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:28,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:30,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:32,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:34,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:36,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]