./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/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 175c9418701070e8128f8ed008fd30685ed8c019e1010acc82e904c5730ef842 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:06:32,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:32,492 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:06:32,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:32,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:32,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:32,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:32,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:32,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:32,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:32,554 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:32,555 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:32,555 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:32,557 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:06:32,557 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:32,558 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:32,558 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:06:32,559 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:06:32,559 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:32,560 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:06:32,560 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:06:32,561 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:06:32,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:32,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:32,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:06:32,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:32,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:32,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:32,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:32,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:32,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:32,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:32,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:32,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:32,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:32,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:32,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:32,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:32,579 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:06:32,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:06:32,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:32,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:32,580 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:32,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:32,581 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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 175c9418701070e8128f8ed008fd30685ed8c019e1010acc82e904c5730ef842 [2023-11-25 00:06:32,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:32,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:32,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:32,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:32,894 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:32,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i [2023-11-25 00:06:36,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:36,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:36,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i [2023-11-25 00:06:36,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/data/22493fbfa/7df221dd988d4994898c3f2c507e9595/FLAG71cd70086 [2023-11-25 00:06:36,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/data/22493fbfa/7df221dd988d4994898c3f2c507e9595 [2023-11-25 00:06:36,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:36,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:36,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:36,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:36,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:36,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:36" (1/1) ... [2023-11-25 00:06:36,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5aaef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:36, skipping insertion in model container [2023-11-25 00:06:36,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:36" (1/1) ... [2023-11-25 00:06:36,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:37,180 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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4505,4518] [2023-11-25 00:06:37,189 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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4565,4578] [2023-11-25 00:06:38,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,456 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,021 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:06:39,022 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:06:39,024 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:06:39,027 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:06:39,037 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:06:39,037 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:06:39,038 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:06:39,039 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:06:39,040 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:06:39,040 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:06:39,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:39,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:39,517 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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4505,4518] [2023-11-25 00:06:39,518 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_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness_negated.i[4565,4578] [2023-11-25 00:06:39,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,590 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,590 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,591 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,607 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,608 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,655 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:06:39,656 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:06:39,657 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:06:39,658 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:06:39,659 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:06:39,668 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:06:39,669 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:06:39,670 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:06:39,671 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:06:39,671 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:06:39,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-25 00:06:39,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:39,987 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,987 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,987 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,987 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,988 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,988 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,988 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,989 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,989 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,989 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,990 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,990 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,990 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,990 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,991 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:39,999 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:40,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39 WrapperNode [2023-11-25 00:06:40,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:40,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:40,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:40,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:40,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,259 INFO L138 Inliner]: procedures = 688, calls = 1536, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 764 [2023-11-25 00:06:40,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:40,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:40,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:40,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:40,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:40,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:40,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:40,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:40,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (1/1) ... [2023-11-25 00:06:40,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:40,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:40,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:40,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-25 00:06:40,494 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-25 00:06:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:06:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-25 00:06:40,496 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-25 00:06:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:06:40,496 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:06:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-25 00:06:40,496 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-25 00:06:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:06:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:06:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:06:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:06:40,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:06:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:06:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:06:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:40,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:06:40,500 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:06:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-25 00:06:40,500 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-25 00:06:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:06:40,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:06:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-25 00:06:40,501 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-25 00:06:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-25 00:06:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-25 00:06:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:06:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:06:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:06:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:06:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:06:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:06:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:06:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:06:40,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:06:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:06:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-25 00:06:40,504 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-25 00:06:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-25 00:06:40,505 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-25 00:06:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:06:40,877 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:40,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:42,212 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:42,513 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:42,513 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-25 00:06:42,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:42 BoogieIcfgContainer [2023-11-25 00:06:42,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:42,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:42,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:42,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:42,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:36" (1/3) ... [2023-11-25 00:06:42,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4321e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:42, skipping insertion in model container [2023-11-25 00:06:42,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:39" (2/3) ... [2023-11-25 00:06:42,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4321e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:42, skipping insertion in model container [2023-11-25 00:06:42,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:42" (3/3) ... [2023-11-25 00:06:42,527 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness_negated.i [2023-11-25 00:06:42,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:42,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:42,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:42,635 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;@6fd79503, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:42,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 97 states have internal predecessors, (117), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-25 00:06:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-25 00:06:42,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:42,655 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:42,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:42,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1870322351, now seen corresponding path program 1 times [2023-11-25 00:06:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171779234] [2023-11-25 00:06:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:42,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:43,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:06:43,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670169730] [2023-11-25 00:06:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:43,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:43,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:43,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:43,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:06:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:43,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:06:43,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-25 00:06:43,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:43,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171779234] [2023-11-25 00:06:43,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:06:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670169730] [2023-11-25 00:06:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670169730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:43,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:43,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:06:43,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850939786] [2023-11-25 00:06:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:43,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:06:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:06:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:06:43,850 INFO L87 Difference]: Start difference. First operand has 175 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 97 states have internal predecessors, (117), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-25 00:06:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:44,099 INFO L93 Difference]: Finished difference Result 315 states and 443 transitions. [2023-11-25 00:06:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:06:44,103 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 107 [2023-11-25 00:06:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:44,114 INFO L225 Difference]: With dead ends: 315 [2023-11-25 00:06:44,115 INFO L226 Difference]: Without dead ends: 171 [2023-11-25 00:06:44,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:06:44,136 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:44,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:06:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-25 00:06:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-25 00:06:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 92 states have (on average 1.184782608695652) internal successors, (109), 94 states have internal predecessors, (109), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-25 00:06:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2023-11-25 00:06:44,222 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 107 [2023-11-25 00:06:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:44,224 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2023-11-25 00:06:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-25 00:06:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2023-11-25 00:06:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-25 00:06:44,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:44,237 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:44,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:06:44,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:44,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1519945852, now seen corresponding path program 1 times [2023-11-25 00:06:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:44,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637291073] [2023-11-25 00:06:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:44,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:06:44,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754801829] [2023-11-25 00:06:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:44,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:44,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:44,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:06:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:45,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:06:45,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-25 00:06:45,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:45,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637291073] [2023-11-25 00:06:45,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:06:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754801829] [2023-11-25 00:06:45,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754801829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:45,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:45,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:06:45,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122946799] [2023-11-25 00:06:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:06:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:06:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:06:45,387 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-25 00:06:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:46,071 INFO L93 Difference]: Finished difference Result 310 states and 413 transitions. [2023-11-25 00:06:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:06:46,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 133 [2023-11-25 00:06:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:46,075 INFO L225 Difference]: With dead ends: 310 [2023-11-25 00:06:46,076 INFO L226 Difference]: Without dead ends: 171 [2023-11-25 00:06:46,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:06:46,079 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 8 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:46,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1003 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-25 00:06:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-25 00:06:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 92 states have (on average 1.173913043478261) internal successors, (108), 94 states have internal predecessors, (108), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-25 00:06:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2023-11-25 00:06:46,102 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 133 [2023-11-25 00:06:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:46,103 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2023-11-25 00:06:46,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-25 00:06:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2023-11-25 00:06:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-25 00:06:46,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:46,107 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:46,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-25 00:06:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-25 00:06:46,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:46,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash -151361742, now seen corresponding path program 1 times [2023-11-25 00:06:46,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:46,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288862420] [2023-11-25 00:06:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:46,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:06:46,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199261719] [2023-11-25 00:06:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:46,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:46,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:46,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:46,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:06:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:47,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 2436 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:06:47,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-25 00:06:47,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:47,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288862420] [2023-11-25 00:06:47,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:06:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199261719] [2023-11-25 00:06:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199261719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:47,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:47,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:06:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912742591] [2023-11-25 00:06:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:47,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:06:47,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:47,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:06:47,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:47,176 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-25 00:06:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:47,504 INFO L93 Difference]: Finished difference Result 307 states and 411 transitions. [2023-11-25 00:06:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:06:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 135 [2023-11-25 00:06:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:47,508 INFO L225 Difference]: With dead ends: 307 [2023-11-25 00:06:47,508 INFO L226 Difference]: Without dead ends: 172 [2023-11-25 00:06:47,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:47,510 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:47,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:06:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-25 00:06:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-25 00:06:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 95 states have internal predecessors, (109), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-25 00:06:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2023-11-25 00:06:47,533 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 231 transitions. Word has length 135 [2023-11-25 00:06:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:47,533 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-25 00:06:47,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-25 00:06:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 231 transitions. [2023-11-25 00:06:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-25 00:06:47,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:47,536 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:47,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-25 00:06:47,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:47,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:47,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1458043068, now seen corresponding path program 1 times [2023-11-25 00:06:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:47,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403210414] [2023-11-25 00:06:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:47,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:06:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752745406] [2023-11-25 00:06:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:47,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:47,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:47,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a304d17d-2d8d-4625-86c7-fc58b4ba0d4b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:06:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:48,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-25 00:06:48,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-25 00:06:48,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-25 00:06:48,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403210414] [2023-11-25 00:06:48,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:06:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752745406] [2023-11-25 00:06:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752745406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499673050] [2023-11-25 00:06:49,022 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2023-11-25 00:06:49,022 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:06:49,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:06:49,031 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:06:49,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs