./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b9c6758ce95672dce3a80ced0038fb12c5d303c7f51f11e2d6af9ddfb735b727 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:03:27,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:03:27,674 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:03:27,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:03:27,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:03:27,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:03:27,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:03:27,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:03:27,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:03:27,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:03:27,729 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:03:27,730 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:03:27,730 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:03:27,732 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:03:27,733 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:03:27,733 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:03:27,734 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:03:27,734 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:03:27,735 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:03:27,735 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:03:27,737 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:03:27,738 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:03:27,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:03:27,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:03:27,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:03:27,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:03:27,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:03:27,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:03:27,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:03:27,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:03:27,744 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:03:27,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:03:27,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:03:27,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:03:27,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:03:27,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:03:27,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:03:27,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:03:27,761 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:03:27,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:03:27,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:03:27,762 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:03:27,762 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:03:27,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:03:27,763 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_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9c6758ce95672dce3a80ced0038fb12c5d303c7f51f11e2d6af9ddfb735b727 [2023-11-21 19:03:28,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:03:28,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:03:28,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:03:28,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:03:28,162 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:03:28,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i [2023-11-21 19:03:31,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:03:31,833 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:03:31,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i [2023-11-21 19:03:31,884 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/data/2f8730a97/7b3ec1344b2a414b888bc424d7b41d2b/FLAGeb29bd381 [2023-11-21 19:03:31,900 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/data/2f8730a97/7b3ec1344b2a414b888bc424d7b41d2b [2023-11-21 19:03:31,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:03:31,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:03:31,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:03:31,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:03:31,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:03:31,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:03:31" (1/1) ... [2023-11-21 19:03:31,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed995ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:31, skipping insertion in model container [2023-11-21 19:03:31,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:03:31" (1/1) ... [2023-11-21 19:03:32,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:03:32,370 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_ce337645-01aa-494d-bee1-3652331773ef/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4495,4508] [2023-11-21 19:03:32,380 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_ce337645-01aa-494d-bee1-3652331773ef/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4555,4568] [2023-11-21 19:03:33,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,880 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,888 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,889 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,915 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,916 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,925 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,928 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,931 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,933 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:33,935 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:34,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:03:34,617 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:03:34,618 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:03:34,619 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:03:34,621 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:03:34,622 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:03:34,622 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:03:34,624 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:03:34,625 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:03:34,626 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:03:35,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,225 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,282 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,283 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,284 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:03:35,394 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:03:35,417 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_ce337645-01aa-494d-bee1-3652331773ef/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4495,4508] [2023-11-21 19:03:35,417 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_ce337645-01aa-494d-bee1-3652331773ef/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness_negated.i[4555,4568] [2023-11-21 19:03:35,476 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,542 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:03:35,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:03:35,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:03:35,544 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:03:35,546 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:03:35,547 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:03:35,547 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:03:35,548 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:03:35,549 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:03:35,550 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:03:35,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-21 19:03:35,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,770 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,771 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:03:35,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:03:36,169 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,170 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,170 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,170 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,170 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,170 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,171 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,172 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,172 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,172 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,172 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,172 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:03:36,180 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:03:36,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36 WrapperNode [2023-11-21 19:03:36,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:03:36,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:03:36,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:03:36,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:03:36,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,439 INFO L138 Inliner]: procedures = 773, calls = 2500, calls flagged for inlining = 69, calls inlined = 19, statements flattened = 1094 [2023-11-21 19:03:36,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:03:36,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:03:36,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:03:36,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:03:36,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:03:36,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:03:36,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:03:36,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:03:36,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (1/1) ... [2023-11-21 19:03:36,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:03:36,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:03:36,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:03:36,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:03:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 19:03:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 19:03:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 19:03:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-21 19:03:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 19:03:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 19:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:03:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:03:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-21 19:03:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-21 19:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:03:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:03:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:03:36,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 19:03:36,702 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 19:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 19:03:36,702 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 19:03:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-21 19:03:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-21 19:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:03:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 19:03:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 19:03:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:03:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-21 19:03:36,704 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-21 19:03:36,704 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-21 19:03:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-21 19:03:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-21 19:03:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-21 19:03:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-21 19:03:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-21 19:03:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-21 19:03:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-21 19:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-21 19:03:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-21 19:03:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:03:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-21 19:03:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-21 19:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-21 19:03:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-21 19:03:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-21 19:03:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-21 19:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:03:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:03:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-21 19:03:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-21 19:03:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:03:36,714 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 19:03:36,714 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 19:03:36,715 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 19:03:36,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 19:03:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-21 19:03:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-21 19:03:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2023-11-21 19:03:36,717 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2023-11-21 19:03:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-21 19:03:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-21 19:03:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-21 19:03:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-21 19:03:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:03:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:03:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:03:37,127 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:03:37,130 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:03:37,383 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2023-11-21 19:03:37,383 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true; [2023-11-21 19:03:37,411 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-21 19:03:37,472 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-21 19:03:39,047 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !true; [2023-11-21 19:03:39,048 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-21 19:03:39,081 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:03:39,482 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:03:39,482 INFO L308 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-21 19:03:39,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:03:39 BoogieIcfgContainer [2023-11-21 19:03:39,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:03:39,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:03:39,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:03:39,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:03:39,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:03:31" (1/3) ... [2023-11-21 19:03:39,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530e4317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:03:39, skipping insertion in model container [2023-11-21 19:03:39,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:03:36" (2/3) ... [2023-11-21 19:03:39,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530e4317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:03:39, skipping insertion in model container [2023-11-21 19:03:39,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:03:39" (3/3) ... [2023-11-21 19:03:39,497 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness_negated.i [2023-11-21 19:03:39,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:03:39,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:03:39,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:03:39,614 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;@6043fcbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:03:39,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:03:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-21 19:03:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-21 19:03:39,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:39,650 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:03:39,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:03:39,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash 530917128, now seen corresponding path program 1 times [2023-11-21 19:03:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855223838] [2023-11-21 19:03:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:40,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:03:40,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93657889] [2023-11-21 19:03:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:40,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:03:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:03:40,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:03:40,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:03:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:41,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:03:41,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:03:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-21 19:03:41,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:03:41,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:03:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855223838] [2023-11-21 19:03:41,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:03:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93657889] [2023-11-21 19:03:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93657889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:03:41,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:03:41,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:03:41,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557698654] [2023-11-21 19:03:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:03:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:03:41,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:03:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:03:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:03:41,375 INFO L87 Difference]: Start difference. First operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-21 19:03:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:03:41,998 INFO L93 Difference]: Finished difference Result 488 states and 698 transitions. [2023-11-21 19:03:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:03:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 127 [2023-11-21 19:03:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:03:42,022 INFO L225 Difference]: With dead ends: 488 [2023-11-21 19:03:42,022 INFO L226 Difference]: Without dead ends: 259 [2023-11-21 19:03:42,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:03:42,040 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:03:42,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1200 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 19:03:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-21 19:03:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-11-21 19:03:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 145 states have internal predecessors, (170), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2023-11-21 19:03:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 343 transitions. [2023-11-21 19:03:42,133 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 343 transitions. Word has length 127 [2023-11-21 19:03:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:03:42,135 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 343 transitions. [2023-11-21 19:03:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-21 19:03:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 343 transitions. [2023-11-21 19:03:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-21 19:03:42,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:42,140 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:03:42,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 19:03:42,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:03:42,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:03:42,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:42,355 INFO L85 PathProgramCache]: Analyzing trace with hash 953046530, now seen corresponding path program 1 times [2023-11-21 19:03:42,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:42,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473590208] [2023-11-21 19:03:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:42,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-21 19:03:45,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:03:45,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473590208] [2023-11-21 19:03:45,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473590208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:03:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786241138] [2023-11-21 19:03:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:03:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:03:45,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:03:45,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce337645-01aa-494d-bee1-3652331773ef/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:03:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:46,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 2609 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-21 19:03:46,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:03:46,384 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 [2023-11-21 19:03:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-21 19:03:46,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:03:46,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786241138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:03:46,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:03:46,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2023-11-21 19:03:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18903814] [2023-11-21 19:03:46,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:03:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:03:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:03:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:03:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:03:46,886 INFO L87 Difference]: Start difference. First operand 259 states and 343 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-21 19:03:50,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-21 19:03:52,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:03:54,404 WARN L539 Checker$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] [2023-11-21 19:03:56,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:03:58,515 WARN L539 Checker$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] [2023-11-21 19:04:00,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:03,010 WARN L539 Checker$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] [2023-11-21 19:04:05,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:07,145 WARN L539 Checker$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] [2023-11-21 19:04:09,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:12,115 WARN L539 Checker$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] [2023-11-21 19:04:14,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:16,579 WARN L539 Checker$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] [2023-11-21 19:04:18,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:20,700 WARN L539 Checker$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] [2023-11-21 19:04:22,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:24,763 WARN L539 Checker$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] [2023-11-21 19:04:26,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:04:28,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]