./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91 --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 1a8b6c26388a304cc0f7eb4ee9884a8aba034f0011f9928d095d792e0fe01855 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:21:46,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:21:46,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:21:46,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:21:46,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:21:46,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:21:46,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:21:46,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:21:46,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:21:46,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:21:46,703 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:21:46,704 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:21:46,704 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:21:46,705 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:21:46,706 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:21:46,706 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:21:46,707 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:21:46,707 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:21:46,708 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:21:46,709 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:21:46,710 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:21:46,711 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:21:46,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:21:46,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:21:46,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:21:46,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:21:46,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:21:46,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:21:46,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:21:46,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:21:46,720 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:21:46,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:21:46,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:21:46,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:21:46,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:21:46,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:21:46,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:21:46,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:21:46,723 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:21:46,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:21:46,724 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:21:46,724 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:21:46,724 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:21:46,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:21:46,725 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_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a8b6c26388a304cc0f7eb4ee9884a8aba034f0011f9928d095d792e0fe01855 [2023-11-24 23:21:47,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:21:47,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:21:47,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:21:47,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:21:47,081 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:21:47,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2023-11-24 23:21:50,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:21:50,922 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:21:50,923 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2023-11-24 23:21:50,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/data/847f549ba/e8c0b20156a544a1bbecf88d5eb388ad/FLAG2d8369543 [2023-11-24 23:21:50,985 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/data/847f549ba/e8c0b20156a544a1bbecf88d5eb388ad [2023-11-24 23:21:50,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:21:50,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:21:50,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:21:50,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:21:51,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:21:51,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:21:50" (1/1) ... [2023-11-24 23:21:51,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac723e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:51, skipping insertion in model container [2023-11-24 23:21:51,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:21:50" (1/1) ... [2023-11-24 23:21:51,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:21:51,525 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_00799662-8f44-4332-8a34-51696125a20a/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2023-11-24 23:21:51,538 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_00799662-8f44-4332-8a34-51696125a20a/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2023-11-24 23:21:53,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,153 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,188 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:53,941 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:21:53,948 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:21:53,950 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:21:53,954 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:21:53,956 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:21:53,960 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:21:53,962 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:21:53,963 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:21:53,965 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:21:53,978 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:21:54,945 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:54,946 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:54,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:54,994 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,004 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,005 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,032 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,034 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,035 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,035 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,036 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,036 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:21:55,136 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:21:55,150 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_00799662-8f44-4332-8a34-51696125a20a/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2023-11-24 23:21:55,151 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_00799662-8f44-4332-8a34-51696125a20a/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2023-11-24 23:21:55,211 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,212 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,225 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,270 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:21:55,271 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:21:55,272 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:21:55,274 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:21:55,275 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:21:55,276 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:21:55,277 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:21:55,280 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:21:55,281 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:21:55,283 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:21:55,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-24 23:21:55,443 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,443 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,471 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:21:55,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:21:55,801 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,801 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,801 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,801 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,801 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,802 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,802 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,802 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,802 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,802 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,803 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,803 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,803 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,803 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,803 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,804 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,804 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,804 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:21:55,812 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:21:55,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55 WrapperNode [2023-11-24 23:21:55,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:21:55,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:21:55,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:21:55,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:21:55,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:55,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,054 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 67, calls inlined = 21, statements flattened = 1362 [2023-11-24 23:21:56,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:21:56,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:21:56,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:21:56,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:21:56,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:21:56,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:21:56,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:21:56,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:21:56,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (1/1) ... [2023-11-24 23:21:56,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:21:56,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:56,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:21:56,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:21:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:21:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:21:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:21:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:21:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:21:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:21:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:21:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:21:56,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:21:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2023-11-24 23:21:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2023-11-24 23:21:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-24 23:21:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-24 23:21:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:21:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:21:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:21:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-24 23:21:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-24 23:21:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:21:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:21:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:21:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:21:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:21:56,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:21:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:21:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-24 23:21:56,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-24 23:21:56,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:21:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-24 23:21:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-24 23:21:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:21:56,365 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:21:56,365 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:21:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:21:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-24 23:21:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-24 23:21:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-24 23:21:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-24 23:21:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-24 23:21:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-24 23:21:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-24 23:21:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-24 23:21:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-24 23:21:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-24 23:21:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:21:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-24 23:21:56,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-24 23:21:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:21:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-24 23:21:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-24 23:21:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-24 23:21:56,370 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-24 23:21:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-24 23:21:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-24 23:21:56,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-24 23:21:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-24 23:21:56,376 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-24 23:21:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-24 23:21:56,376 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-24 23:21:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:21:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:21:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-24 23:21:56,379 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-24 23:21:56,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:21:56,384 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:21:56,385 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:21:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:21:56,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:21:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-24 23:21:56,385 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-24 23:21:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-24 23:21:56,386 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-24 23:21:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-24 23:21:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-24 23:21:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:21:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:21:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:21:56,923 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:21:56,927 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:21:57,314 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-24 23:21:57,351 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-24 23:21:58,377 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-24 23:21:58,378 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-24 23:21:59,339 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:21:59,867 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:21:59,867 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-24 23:21:59,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:21:59 BoogieIcfgContainer [2023-11-24 23:21:59,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:21:59,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:21:59,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:21:59,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:21:59,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:21:50" (1/3) ... [2023-11-24 23:21:59,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130d031d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:21:59, skipping insertion in model container [2023-11-24 23:21:59,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:21:55" (2/3) ... [2023-11-24 23:21:59,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130d031d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:21:59, skipping insertion in model container [2023-11-24 23:21:59,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:21:59" (3/3) ... [2023-11-24 23:21:59,878 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness_negated.i [2023-11-24 23:21:59,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:21:59,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:21:59,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:21:59,964 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;@14749cdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:21:59,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:21:59,970 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) [2023-11-24 23:21:59,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-24 23:21:59,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:59,984 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] [2023-11-24 23:21:59,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:21:59,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1527887175, now seen corresponding path program 1 times [2023-11-24 23:22:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063812786] [2023-11-24 23:22:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:00,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:00,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183590254] [2023-11-24 23:22:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:00,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:00,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:00,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:00,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:22:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:01,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:22:01,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-24 23:22:01,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:01,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063812786] [2023-11-24 23:22:01,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183590254] [2023-11-24 23:22:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183590254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:01,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:22:01,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262471853] [2023-11-24 23:22:01,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:01,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:22:01,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:22:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:22:01,701 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) [2023-11-24 23:22:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:03,966 INFO L93 Difference]: Finished difference Result 558 states and 783 transitions. [2023-11-24 23:22:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:22:03,969 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 [2023-11-24 23:22:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:03,984 INFO L225 Difference]: With dead ends: 558 [2023-11-24 23:22:03,985 INFO L226 Difference]: Without dead ends: 281 [2023-11-24 23:22:03,992 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 [2023-11-24 23:22:03,996 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:03,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1296 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 23:22:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-24 23:22:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-24 23:22:04,066 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) [2023-11-24 23:22:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2023-11-24 23:22:04,072 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 89 [2023-11-24 23:22:04,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:04,072 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2023-11-24 23:22:04,073 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) [2023-11-24 23:22:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2023-11-24 23:22:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-24 23:22:04,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:04,078 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] [2023-11-24 23:22:04,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:04,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:04,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:04,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash 191245329, now seen corresponding path program 1 times [2023-11-24 23:22:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451476515] [2023-11-24 23:22:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 23:22:05,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:05,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451476515] [2023-11-24 23:22:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451476515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:05,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:05,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:22:05,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029065687] [2023-11-24 23:22:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:22:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:22:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:22:05,690 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) [2023-11-24 23:22:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:08,585 INFO L93 Difference]: Finished difference Result 527 states and 705 transitions. [2023-11-24 23:22:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:22:08,586 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 [2023-11-24 23:22:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:08,591 INFO L225 Difference]: With dead ends: 527 [2023-11-24 23:22:08,591 INFO L226 Difference]: Without dead ends: 283 [2023-11-24 23:22:08,593 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 [2023-11-24 23:22:08,601 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 0 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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 [2023-11-24 23:22:08,602 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] [2023-11-24 23:22:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-24 23:22:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-24 23:22:08,658 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) [2023-11-24 23:22:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 381 transitions. [2023-11-24 23:22:08,664 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 381 transitions. Word has length 93 [2023-11-24 23:22:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:08,667 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 381 transitions. [2023-11-24 23:22:08,667 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) [2023-11-24 23:22:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 381 transitions. [2023-11-24 23:22:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-24 23:22:08,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:08,675 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] [2023-11-24 23:22:08,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:22:08,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:08,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1575431197, now seen corresponding path program 1 times [2023-11-24 23:22:08,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:08,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489022996] [2023-11-24 23:22:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-24 23:22:11,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489022996] [2023-11-24 23:22:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489022996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 23:22:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6815400] [2023-11-24 23:22:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:22:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:22:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:22:11,459 INFO L87 Difference]: Start difference. First operand 283 states and 381 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-24 23:22:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:17,637 INFO L93 Difference]: Finished difference Result 550 states and 739 transitions. [2023-11-24 23:22:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:22:17,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 97 [2023-11-24 23:22:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:17,648 INFO L225 Difference]: With dead ends: 550 [2023-11-24 23:22:17,652 INFO L226 Difference]: Without dead ends: 285 [2023-11-24 23:22:17,662 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 [2023-11-24 23:22:17,663 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:17,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1803 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-24 23:22:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-24 23:22:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-11-24 23:22:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 165 states have (on average 1.2242424242424241) internal successors, (202), 169 states have internal predecessors, (202), 86 states have call successors, (86), 30 states have call predecessors, (86), 33 states have return successors, (95), 85 states have call predecessors, (95), 84 states have call successors, (95) [2023-11-24 23:22:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 383 transitions. [2023-11-24 23:22:17,735 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 383 transitions. Word has length 97 [2023-11-24 23:22:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:17,735 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 383 transitions. [2023-11-24 23:22:17,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-24 23:22:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 383 transitions. [2023-11-24 23:22:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-24 23:22:17,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:17,744 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-24 23:22:17,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:22:17,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:22:17,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 292891649, now seen corresponding path program 1 times [2023-11-24 23:22:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472518872] [2023-11-24 23:22:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-24 23:22:19,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:19,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472518872] [2023-11-24 23:22:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472518872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:22:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881940303] [2023-11-24 23:22:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:19,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:19,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:19,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:19,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00799662-8f44-4332-8a34-51696125a20a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:22:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:20,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-24 23:22:20,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:20,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:22:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:22:20,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881940303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:20,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:22:20,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2023-11-24 23:22:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999411546] [2023-11-24 23:22:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:20,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:22:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:20,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:22:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:22:20,952 INFO L87 Difference]: Start difference. First operand 285 states and 383 transitions. Second operand has 12 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-24 23:22:25,362 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] [2023-11-24 23:22:27,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:22:29,531 WARN L539 Checker$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] [2023-11-24 23:22:31,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:22:33,646 WARN L539 Checker$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] [2023-11-24 23:22:35,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:22:38,390 WARN L539 Checker$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] [2023-11-24 23:22:40,420 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]