./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_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_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh --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 f4f0a7d90baaf3c6f383556a6db0dccf9ba6f55d8bb50a635d310d7c96d51ae8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:07:10,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:07:11,044 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:07:11,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:07:11,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:07:11,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:07:11,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:07:11,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:07:11,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:07:11,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:07:11,076 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:07:11,077 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:07:11,077 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:07:11,078 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:07:11,078 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:07:11,079 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:07:11,079 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:07:11,080 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:07:11,080 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:07:11,081 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:07:11,081 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:07:11,082 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:07:11,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:07:11,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:07:11,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:07:11,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:07:11,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:07:11,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:07:11,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:07:11,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:07:11,087 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:07:11,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:07:11,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:07:11,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:07:11,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:11,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:07:11,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:07:11,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:07:11,089 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:07:11,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:07:11,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:07:11,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:07:11,090 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:07:11,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:07:11,090 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_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f0a7d90baaf3c6f383556a6db0dccf9ba6f55d8bb50a635d310d7c96d51ae8 [2023-12-02 13:07:11,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:07:11,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:07:11,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:07:11,343 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:07:11,344 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:07:11,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i [2023-12-02 13:07:14,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:07:14,552 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:07:14,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i [2023-12-02 13:07:14,587 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/data/0b834fdcc/2ade6cffca984e6bbac33a9aa8e8d4eb/FLAGc80be0f3c [2023-12-02 13:07:14,601 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/data/0b834fdcc/2ade6cffca984e6bbac33a9aa8e8d4eb [2023-12-02 13:07:14,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:07:14,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:07:14,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:14,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:07:14,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:07:14,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:14" (1/1) ... [2023-12-02 13:07:14,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351a3ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:14, skipping insertion in model container [2023-12-02 13:07:14,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:14" (1/1) ... [2023-12-02 13:07:14,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:07:15,037 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_609748af-ab4e-42ab-8f7e-dd0c62cfd388/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4494,4507] [2023-12-02 13:07:15,046 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_609748af-ab4e-42ab-8f7e-dd0c62cfd388/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4554,4567] [2023-12-02 13:07:16,173 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,174 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,174 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,175 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,176 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,196 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,197 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,198 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,198 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:16,589 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:07:16,590 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:07:16,591 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:07:16,592 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:07:16,593 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:07:16,594 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:07:16,595 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:07:16,596 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:07:16,596 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:07:16,597 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:07:17,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,089 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,089 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,107 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,107 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:17,210 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:07:17,225 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_609748af-ab4e-42ab-8f7e-dd0c62cfd388/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4494,4507] [2023-12-02 13:07:17,226 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_609748af-ab4e-42ab-8f7e-dd0c62cfd388/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness_negated.i[4554,4567] [2023-12-02 13:07:17,264 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,264 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,275 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,276 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,277 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,278 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,278 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,278 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,312 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 13:07:17,313 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 13:07:17,314 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 13:07:17,314 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 13:07:17,315 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 13:07:17,316 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 13:07:17,316 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 13:07:17,317 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 13:07:17,317 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 13:07:17,318 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 13:07:17,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7553-7564] [2023-12-02 13:07:17,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,448 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,449 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,461 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,461 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,462 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,462 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,462 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 13:07:17,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:17,814 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,815 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,815 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,815 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,815 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,815 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,815 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,816 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,817 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:07:17,824 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:07:17,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17 WrapperNode [2023-12-02 13:07:17,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:17,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:17,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:07:17,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:07:17,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:17,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:17,999 INFO L138 Inliner]: procedures = 773, calls = 2441, calls flagged for inlining = 68, calls inlined = 13, statements flattened = 611 [2023-12-02 13:07:18,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:18,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:07:18,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:07:18,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:07:18,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:07:18,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:07:18,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:07:18,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:07:18,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (1/1) ... [2023-12-02 13:07:18,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:18,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:18,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:07:18,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:07:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2023-12-02 13:07:18,148 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2023-12-02 13:07:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 13:07:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 13:07:18,148 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 13:07:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:07:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 13:07:18,148 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 13:07:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:07:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:07:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-12-02 13:07:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-12-02 13:07:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2023-12-02 13:07:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2023-12-02 13:07:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:07:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:07:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:07:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:07:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:07:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 13:07:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 13:07:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 13:07:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 13:07:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:07:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-12-02 13:07:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-12-02 13:07:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:07:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 13:07:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 13:07:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:07:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-12-02 13:07:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-12-02 13:07:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-12-02 13:07:18,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-12-02 13:07:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:07:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-12-02 13:07:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-12-02 13:07:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 13:07:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 13:07:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:07:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:07:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-12-02 13:07:18,152 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-12-02 13:07:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:07:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 13:07:18,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 13:07:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-12-02 13:07:18,153 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-12-02 13:07:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:07:18,425 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:07:18,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:07:19,237 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:07:19,410 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:07:19,410 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 13:07:19,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:19 BoogieIcfgContainer [2023-12-02 13:07:19,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:07:19,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:07:19,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:07:19,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:07:19,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:07:14" (1/3) ... [2023-12-02 13:07:19,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4924ab31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:19, skipping insertion in model container [2023-12-02 13:07:19,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:17" (2/3) ... [2023-12-02 13:07:19,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4924ab31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:19, skipping insertion in model container [2023-12-02 13:07:19,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:19" (3/3) ... [2023-12-02 13:07:19,422 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness_negated.i [2023-12-02 13:07:19,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:07:19,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:07:19,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:07:19,500 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;@4c6860b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:07:19,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:07:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 13:07:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 13:07:19,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:19,521 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-12-02 13:07:19,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:07:19,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash 383046994, now seen corresponding path program 1 times [2023-12-02 13:07:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693796176] [2023-12-02 13:07:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:19,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976391349] [2023-12-02 13:07:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:19,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:19,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:19,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:07:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:20,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:07:20,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 13:07:20,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:07:20,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:20,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693796176] [2023-12-02 13:07:20,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976391349] [2023-12-02 13:07:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976391349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:20,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:20,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:07:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211945338] [2023-12-02 13:07:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:07:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:07:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:07:20,646 INFO L87 Difference]: Start difference. First operand has 137 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 13:07:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:21,107 INFO L93 Difference]: Finished difference Result 244 states and 317 transitions. [2023-12-02 13:07:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:07:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 99 [2023-12-02 13:07:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:21,120 INFO L225 Difference]: With dead ends: 244 [2023-12-02 13:07:21,120 INFO L226 Difference]: Without dead ends: 138 [2023-12-02 13:07:21,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:07:21,129 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:21,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 576 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:07:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-02 13:07:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-12-02 13:07:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 77 states have (on average 1.155844155844156) internal successors, (89), 78 states have internal predecessors, (89), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2023-12-02 13:07:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 171 transitions. [2023-12-02 13:07:21,183 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 171 transitions. Word has length 99 [2023-12-02 13:07:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:21,185 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 171 transitions. [2023-12-02 13:07:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 13:07:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 171 transitions. [2023-12-02 13:07:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 13:07:21,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:21,191 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:21,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:07:21,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:21,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:07:21,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1077975905, now seen corresponding path program 1 times [2023-12-02 13:07:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:21,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247548709] [2023-12-02 13:07:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-02 13:07:23,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247548709] [2023-12-02 13:07:23,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247548709] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:07:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766253658] [2023-12-02 13:07:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:23,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:23,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:07:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:24,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 13:07:24,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:24,307 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 [2023-12-02 13:07:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 13:07:24,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:07:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766253658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:24,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:07:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2023-12-02 13:07:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739684486] [2023-12-02 13:07:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:24,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:07:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:07:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:07:24,750 INFO L87 Difference]: Start difference. First operand 138 states and 171 transitions. Second operand has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-02 13:07:27,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:07:29,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:31,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:34,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:36,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:38,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:40,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:42,468 WARN L539 Checker$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] [2023-12-02 13:07:44,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:46,647 WARN L539 Checker$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] [2023-12-02 13:07:48,667 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] [2023-12-02 13:07:48,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:48,703 INFO L93 Difference]: Finished difference Result 272 states and 329 transitions. [2023-12-02 13:07:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 13:07:48,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 103 [2023-12-02 13:07:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:48,707 INFO L225 Difference]: With dead ends: 272 [2023-12-02 13:07:48,707 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 13:07:48,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-02 13:07:48,709 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 59 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 12 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:48,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 878 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 403 Invalid, 11 Unknown, 0 Unchecked, 23.8s Time] [2023-12-02 13:07:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 13:07:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2023-12-02 13:07:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 103 states have internal predecessors, (115), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 49 states have call predecessors, (51), 48 states have call successors, (51) [2023-12-02 13:07:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2023-12-02 13:07:48,734 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 103 [2023-12-02 13:07:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:48,734 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2023-12-02 13:07:48,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-02 13:07:48,735 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2023-12-02 13:07:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 13:07:48,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:48,737 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:48,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:07:48,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:48,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:07:48,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1352041537, now seen corresponding path program 1 times [2023-12-02 13:07:48,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:48,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949597358] [2023-12-02 13:07:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-02 13:07:50,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949597358] [2023-12-02 13:07:50,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949597358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:07:50,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321081937] [2023-12-02 13:07:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:50,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:50,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:50,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:07:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:50,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 2333 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 13:07:50,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:50,790 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 [2023-12-02 13:07:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 13:07:51,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:07:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321081937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:07:51,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2023-12-02 13:07:51,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511590141] [2023-12-02 13:07:51,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:51,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:07:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:51,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:07:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-12-02 13:07:51,055 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 12 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-02 13:07:55,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:07:57,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:07:59,361 WARN L539 Checker$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] [2023-12-02 13:08:01,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:08:03,464 WARN L539 Checker$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] [2023-12-02 13:08:05,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:08:07,934 WARN L539 Checker$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] [2023-12-02 13:08:09,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:08:11,985 WARN L539 Checker$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] [2023-12-02 13:08:14,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:08:16,155 WARN L539 Checker$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] [2023-12-02 13:08:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:16,193 INFO L93 Difference]: Finished difference Result 279 states and 333 transitions. [2023-12-02 13:08:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 13:08:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 109 [2023-12-02 13:08:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:16,197 INFO L225 Difference]: With dead ends: 279 [2023-12-02 13:08:16,197 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 13:08:16,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-12-02 13:08:16,199 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 60 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 16 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:16,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1203 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 660 Invalid, 11 Unknown, 0 Unchecked, 25.0s Time] [2023-12-02 13:08:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 13:08:16,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2023-12-02 13:08:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 103 states have internal predecessors, (114), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 49 states have call predecessors, (51), 48 states have call successors, (51) [2023-12-02 13:08:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 214 transitions. [2023-12-02 13:08:16,224 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 214 transitions. Word has length 109 [2023-12-02 13:08:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:16,225 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 214 transitions. [2023-12-02 13:08:16,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-02 13:08:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 214 transitions. [2023-12-02 13:08:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 13:08:16,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:16,228 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:16,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:08:16,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:16,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:16,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -948495900, now seen corresponding path program 1 times [2023-12-02 13:08:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:16,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120193819] [2023-12-02 13:08:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-02 13:08:21,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120193819] [2023-12-02 13:08:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120193819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:08:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045213280] [2023-12-02 13:08:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:21,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:21,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:21,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_609748af-ab4e-42ab-8f7e-dd0c62cfd388/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:08:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:22,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 13:08:22,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:22,509 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 [2023-12-02 13:08:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 13:08:29,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-12-02 13:08:29,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045213280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:29,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [423544702] [2023-12-02 13:08:30,006 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2023-12-02 13:08:30,006 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:30,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:30,013 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:30,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:18:33,381 WARN L293 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 3169 DAG size of output: 3167 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 13:18:43,951 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 3167 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 13:18:51,331 WARN L293 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 3169 DAG size of output: 3167 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)