./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.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_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/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_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/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_2509afd9-d633-4d79-b9aa-de5da1a01131/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 a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:57:31,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:57:32,030 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:57:32,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:57:32,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:57:32,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:57:32,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:57:32,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:57:32,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:57:32,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:57:32,096 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:57:32,097 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:57:32,097 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:57:32,099 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:57:32,100 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:57:32,100 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:57:32,101 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:57:32,101 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:57:32,101 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:57:32,102 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:57:32,104 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:57:32,104 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:57:32,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:57:32,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:57:32,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:57:32,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:57:32,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:57:32,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:57:32,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:57:32,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:57:32,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:57:32,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:57:32,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:57:32,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:32,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:57:32,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:57:32,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:57:32,112 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:57:32,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:57:32,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:57:32,119 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:57:32,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:57:32,119 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_2509afd9-d633-4d79-b9aa-de5da1a01131/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 [2023-11-12 00:57:32,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:57:32,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:57:32,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:57:32,462 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:57:32,462 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:57:32,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2023-11-12 00:57:35,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:57:36,351 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:57:36,351 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2023-11-12 00:57:36,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/data/a0eb1db89/29edb7cd36fd48a2a7e8186243e6d886/FLAG81d17bb1d [2023-11-12 00:57:36,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/data/a0eb1db89/29edb7cd36fd48a2a7e8186243e6d886 [2023-11-12 00:57:36,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:57:36,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:57:36,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:36,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:57:36,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:57:36,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:36" (1/1) ... [2023-11-12 00:57:36,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61263439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:36, skipping insertion in model container [2023-11-12 00:57:36,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:36" (1/1) ... [2023-11-12 00:57:36,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:37,031 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_2509afd9-d633-4d79-b9aa-de5da1a01131/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2023-11-12 00:57:37,043 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_2509afd9-d633-4d79-b9aa-de5da1a01131/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2023-11-12 00:57:38,626 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,627 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,628 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,629 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,631 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,648 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,649 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,651 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,652 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,655 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,656 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,658 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:38,658 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:39,413 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:57:39,442 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:57:39,444 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:57:39,445 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:57:39,447 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:57:39,448 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:57:39,449 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:57:39,450 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:57:39,451 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:57:39,452 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:57:40,139 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,140 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,180 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,181 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,189 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,191 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,232 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,239 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,240 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,240 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,241 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,242 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,243 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:40,375 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:57:40,401 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_2509afd9-d633-4d79-b9aa-de5da1a01131/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2023-11-12 00:57:40,401 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_2509afd9-d633-4d79-b9aa-de5da1a01131/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2023-11-12 00:57:40,471 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,471 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,472 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,472 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,473 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,486 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,486 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,487 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,488 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,488 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,489 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,540 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:57:40,541 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:57:40,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:57:40,544 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:57:40,545 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:57:40,545 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:57:40,546 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:57:40,548 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:57:40,549 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:57:40,549 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:57:40,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2023-11-12 00:57:40,834 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,834 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,843 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,844 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,847 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,848 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,863 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,864 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,866 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,867 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,868 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:57:40,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:41,283 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,284 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,284 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,285 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,285 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,285 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,285 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,285 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,286 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,287 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,287 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,287 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:41,295 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:57:41,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41 WrapperNode [2023-11-12 00:57:41,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:41,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:41,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:57:41,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:57:41,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,546 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 67, calls inlined = 21, statements flattened = 1362 [2023-11-12 00:57:41,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:41,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:57:41,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:57:41,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:57:41,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:57:41,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:57:41,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:57:41,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:57:41,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (1/1) ... [2023-11-12 00:57:41,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:41,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:41,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:57:41,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:57:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 00:57:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:57:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:57:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-12 00:57:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:57:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:57:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:57:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:57:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2023-11-12 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2023-11-12 00:57:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 00:57:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-12 00:57:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-12 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:57:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:57:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:57:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:57:41,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:57:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-12 00:57:41,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-12 00:57:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:57:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:57:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:57:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:57:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:57:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-12 00:57:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-12 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 00:57:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 00:57:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-12 00:57:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-12 00:57:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-12 00:57:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-12 00:57:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-12 00:57:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-12 00:57:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:57:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 00:57:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-12 00:57:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-12 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-12 00:57:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 00:57:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 00:57:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-12 00:57:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-12 00:57:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-12 00:57:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-12 00:57:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-12 00:57:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-12 00:57:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:57:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:57:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 00:57:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 00:57:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:57:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:57:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:57:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:57:41,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:57:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:57:41,837 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-12 00:57:41,838 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-12 00:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-12 00:57:41,838 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-12 00:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:57:41,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:57:42,318 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:57:42,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:57:42,734 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-12 00:57:42,787 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-12 00:57:44,216 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-12 00:57:44,216 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-12 00:57:45,585 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:57:46,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:57:46,223 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-12 00:57:46,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:46 BoogieIcfgContainer [2023-11-12 00:57:46,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:57:46,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:57:46,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:57:46,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:57:46,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:57:36" (1/3) ... [2023-11-12 00:57:46,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab7bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:46, skipping insertion in model container [2023-11-12 00:57:46,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:41" (2/3) ... [2023-11-12 00:57:46,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab7bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:46, skipping insertion in model container [2023-11-12 00:57:46,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:46" (3/3) ... [2023-11-12 00:57:46,234 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness.i [2023-11-12 00:57:46,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:57:46,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:57:46,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:57:46,338 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;@185d7a7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:57:46,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:57:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 167 states have (on average 1.251497005988024) internal successors, (209), 164 states have internal predecessors, (209), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-12 00:57:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-12 00:57:46,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:46,357 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-12 00:57:46,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:46,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1084894474, now seen corresponding path program 1 times [2023-11-12 00:57:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153596514] [2023-11-12 00:57:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:46,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:57:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408000291] [2023-11-12 00:57:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:46,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:46,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:46,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:57:47,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:57:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:47,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:57:47,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-12 00:57:47,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:57:47,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153596514] [2023-11-12 00:57:47,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:57:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408000291] [2023-11-12 00:57:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408000291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:48,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:48,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:57:48,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635867356] [2023-11-12 00:57:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:57:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:48,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:57:48,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:48,052 INFO L87 Difference]: Start difference. First operand has 281 states, 167 states have (on average 1.251497005988024) internal successors, (209), 164 states have internal predecessors, (209), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 00:57:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:50,427 INFO L93 Difference]: Finished difference Result 558 states and 783 transitions. [2023-11-12 00:57:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:57:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 89 [2023-11-12 00:57:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:50,444 INFO L225 Difference]: With dead ends: 558 [2023-11-12 00:57:50,444 INFO L226 Difference]: Without dead ends: 281 [2023-11-12 00:57:50,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 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 00:57:50,455 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:50,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1296 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:57:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-12 00:57:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-12 00:57:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 165 states have internal predecessors, (200), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2023-11-12 00:57:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2023-11-12 00:57:50,527 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 89 [2023-11-12 00:57:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:50,528 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2023-11-12 00:57:50,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 00:57:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2023-11-12 00:57:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 00:57:50,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:50,534 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-12 00:57:50,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:57:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:57:50,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:50,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 582474801, now seen corresponding path program 1 times [2023-11-12 00:57:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447076324] [2023-11-12 00:57:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-12 00:57:52,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:52,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447076324] [2023-11-12 00:57:52,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447076324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:52,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:52,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:57:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229110680] [2023-11-12 00:57:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:57:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:57:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:52,211 INFO L87 Difference]: Start difference. First operand 281 states and 374 transitions. Second operand has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:57:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:55,039 INFO L93 Difference]: Finished difference Result 527 states and 705 transitions. [2023-11-12 00:57:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:57:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 93 [2023-11-12 00:57:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:55,045 INFO L225 Difference]: With dead ends: 527 [2023-11-12 00:57:55,045 INFO L226 Difference]: Without dead ends: 283 [2023-11-12 00:57:55,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:55,048 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 0 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:55,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1186 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 00:57:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-12 00:57:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-12 00:57:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 164 states have (on average 1.225609756097561) internal successors, (201), 167 states have internal predecessors, (201), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (94), 85 states have call predecessors, (94), 84 states have call successors, (94) [2023-11-12 00:57:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 381 transitions. [2023-11-12 00:57:55,082 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 381 transitions. Word has length 93 [2023-11-12 00:57:55,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:55,083 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 381 transitions. [2023-11-12 00:57:55,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:57:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 381 transitions. [2023-11-12 00:57:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 00:57:55,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:55,086 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-12 00:57:55,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:57:55,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:55,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1359914396, now seen corresponding path program 1 times [2023-11-12 00:57:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307403612] [2023-11-12 00:57:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-12 00:57:56,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307403612] [2023-11-12 00:57:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307403612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:56,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:57:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086538942] [2023-11-12 00:57:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:57:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:57:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:56,844 INFO L87 Difference]: Start difference. First operand 283 states and 381 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-12 00:57:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:59,682 INFO L93 Difference]: Finished difference Result 289 states and 386 transitions. [2023-11-12 00:57:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:57:59,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 97 [2023-11-12 00:57:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:59,688 INFO L225 Difference]: With dead ends: 289 [2023-11-12 00:57:59,688 INFO L226 Difference]: Without dead ends: 287 [2023-11-12 00:57:59,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 00:57:59,690 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 5 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:59,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1260 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 00:57:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-12 00:57:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-12 00:57:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 167 states have (on average 1.221556886227545) internal successors, (204), 170 states have internal predecessors, (204), 86 states have call successors, (86), 31 states have call predecessors, (86), 33 states have return successors, (94), 85 states have call predecessors, (94), 84 states have call successors, (94) [2023-11-12 00:57:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 384 transitions. [2023-11-12 00:57:59,725 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 384 transitions. Word has length 97 [2023-11-12 00:57:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:59,726 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 384 transitions. [2023-11-12 00:57:59,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-12 00:57:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 384 transitions. [2023-11-12 00:57:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-12 00:57:59,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:59,729 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 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 00:57:59,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:57:59,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:59,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1799213351, now seen corresponding path program 1 times [2023-11-12 00:57:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511330268] [2023-11-12 00:57:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-12 00:58:02,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511330268] [2023-11-12 00:58:02,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511330268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:02,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:02,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:58:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451718060] [2023-11-12 00:58:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:02,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:58:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:58:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:58:02,361 INFO L87 Difference]: Start difference. First operand 287 states and 384 transitions. Second operand has 8 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 00:58:06,888 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 [] [2023-11-12 00:58:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:10,066 INFO L93 Difference]: Finished difference Result 558 states and 745 transitions. [2023-11-12 00:58:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:58:10,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 106 [2023-11-12 00:58:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:10,070 INFO L225 Difference]: With dead ends: 558 [2023-11-12 00:58:10,070 INFO L226 Difference]: Without dead ends: 289 [2023-11-12 00:58:10,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:58:10,072 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:10,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1503 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2023-11-12 00:58:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-12 00:58:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-12 00:58:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 168 states have (on average 1.2202380952380953) internal successors, (205), 172 states have internal predecessors, (205), 86 states have call successors, (86), 31 states have call predecessors, (86), 34 states have return successors, (95), 85 states have call predecessors, (95), 84 states have call successors, (95) [2023-11-12 00:58:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 386 transitions. [2023-11-12 00:58:10,112 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 386 transitions. Word has length 106 [2023-11-12 00:58:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:10,113 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 386 transitions. [2023-11-12 00:58:10,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 00:58:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 386 transitions. [2023-11-12 00:58:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-12 00:58:10,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:10,116 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 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 00:58:10,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:58:10,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:10,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1277558013, now seen corresponding path program 1 times [2023-11-12 00:58:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:10,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763943006] [2023-11-12 00:58:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:10,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-12 00:58:11,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:11,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763943006] [2023-11-12 00:58:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763943006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:58:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818702918] [2023-11-12 00:58:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:58:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:11,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:58:11,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2509afd9-d633-4d79-b9aa-de5da1a01131/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:58:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:12,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 00:58:12,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:12,848 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 00:58:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-12 00:58:13,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:13,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818702918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:13,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:58:13,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2023-11-12 00:58:13,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949421094] [2023-11-12 00:58:13,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:13,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:58:13,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:58:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:58:13,202 INFO L87 Difference]: Start difference. First operand 289 states and 386 transitions. Second operand has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-12 00:58:17,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-12 00:58:19,266 WARN L539 Checker$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 00:58:21,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:58:23,406 WARN L539 Checker$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 00:58:25,426 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]