./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1a8b6c26388a304cc0f7eb4ee9884a8aba034f0011f9928d095d792e0fe01855 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:39:42,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:39:42,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:39:42,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:39:42,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:39:42,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:39:42,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:39:42,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:39:42,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:39:42,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:39:42,289 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:39:42,290 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:39:42,291 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:39:42,291 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:39:42,292 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:39:42,293 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:39:42,294 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:39:42,294 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:39:42,295 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:39:42,296 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:39:42,297 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:39:42,298 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:39:42,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:39:42,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:39:42,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:39:42,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:39:42,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:39:42,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:39:42,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:39:42,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:39:42,305 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:39:42,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:39:42,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:39:42,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:39:42,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:42,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:39:42,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:39:42,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:39:42,309 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:39:42,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:39:42,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:39:42,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:39:42,311 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:39:42,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:39:42,311 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_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a8b6c26388a304cc0f7eb4ee9884a8aba034f0011f9928d095d792e0fe01855 [2023-11-23 20:39:42,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:39:42,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:39:42,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:39:42,665 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:39:42,667 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:39:42,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2023-11-23 20:39:46,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:39:46,756 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:39:46,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2023-11-23 20:39:46,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/data/15d0ec70e/99e6fe857cc64506b2a57edf9990ca66/FLAGe4ffb9289 [2023-11-23 20:39:46,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/data/15d0ec70e/99e6fe857cc64506b2a57edf9990ca66 [2023-11-23 20:39:46,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:39:46,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:39:46,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:46,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:39:46,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:39:46,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:46" (1/1) ... [2023-11-23 20:39:46,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cfd7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46, skipping insertion in model container [2023-11-23 20:39:46,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:46" (1/1) ... [2023-11-23 20:39:47,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:39:47,399 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_b0dca26d-6fca-43df-ab07-3a665456bbdb/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2023-11-23 20:39:47,411 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_b0dca26d-6fca-43df-ab07-3a665456bbdb/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2023-11-23 20:39:48,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,507 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,508 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,515 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:48,516 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,121 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:39:49,133 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:39:49,134 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:39:49,136 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:39:49,138 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:39:49,150 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:39:49,151 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:39:49,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:39:49,153 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:39:49,154 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:39:49,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,895 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,920 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,920 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:49,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:50,030 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:39:50,108 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_b0dca26d-6fca-43df-ab07-3a665456bbdb/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2023-11-23 20:39:50,110 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_b0dca26d-6fca-43df-ab07-3a665456bbdb/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2023-11-23 20:39:50,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,166 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,166 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,167 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,176 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:39:50,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:39:50,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:39:50,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:39:50,226 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:39:50,227 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:39:50,228 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:39:50,229 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:39:50,229 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:39:50,231 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:39:50,296 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-23 20:39:50,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,426 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,440 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,440 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,456 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,459 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:39:50,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:50,893 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,893 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,894 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,894 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,894 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,894 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,894 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,894 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,895 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,895 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,895 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,895 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,895 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,896 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,896 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,896 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,896 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,896 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:50,903 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:39:50,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50 WrapperNode [2023-11-23 20:39:50,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:50,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:50,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:39:50,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:39:50,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,248 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 67, calls inlined = 21, statements flattened = 1362 [2023-11-23 20:39:51,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:51,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:39:51,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:39:51,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:39:51,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:39:51,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:39:51,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:39:51,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:39:51,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (1/1) ... [2023-11-23 20:39:51,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:39:51,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:39:51,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:39:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:39:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 20:39:51,555 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 20:39:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 20:39:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:39:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 20:39:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 20:39:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:39:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:39:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2023-11-23 20:39:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2023-11-23 20:39:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 20:39:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 20:39:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:39:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:39:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:39:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-23 20:39:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-23 20:39:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:39:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:39:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 20:39:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 20:39:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 20:39:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 20:39:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:39:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 20:39:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 20:39:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:39:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 20:39:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 20:39:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:39:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 20:39:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 20:39:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:39:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-23 20:39:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-23 20:39:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 20:39:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 20:39:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-23 20:39:51,564 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-23 20:39:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-23 20:39:51,564 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-23 20:39:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-23 20:39:51,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-23 20:39:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:39:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 20:39:51,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 20:39:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:39:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-23 20:39:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-23 20:39:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 20:39:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 20:39:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 20:39:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-23 20:39:51,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-23 20:39:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-23 20:39:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-23 20:39:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-23 20:39:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-23 20:39:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:39:51,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:39:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 20:39:51,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 20:39:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:39:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 20:39:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 20:39:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 20:39:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 20:39:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 20:39:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 20:39:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-23 20:39:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-23 20:39:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-23 20:39:51,583 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-23 20:39:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:39:51,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:39:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:39:52,053 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:39:52,057 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:39:52,469 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-23 20:39:52,527 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-23 20:39:53,820 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-23 20:39:53,820 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-23 20:39:54,757 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:39:55,369 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:39:55,369 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-23 20:39:55,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:55 BoogieIcfgContainer [2023-11-23 20:39:55,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:39:55,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:39:55,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:39:55,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:39:55,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:39:46" (1/3) ... [2023-11-23 20:39:55,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3d6d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:55, skipping insertion in model container [2023-11-23 20:39:55,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:50" (2/3) ... [2023-11-23 20:39:55,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3d6d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:55, skipping insertion in model container [2023-11-23 20:39:55,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:55" (3/3) ... [2023-11-23 20:39:55,384 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness_negated.i [2023-11-23 20:39:55,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:39:55,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:39:55,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:39:55,504 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;@3061848b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:39:55,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:39:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 167 states have (on average 1.251497005988024) internal successors, (209), 164 states have internal predecessors, (209), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-23 20:39:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 20:39:55,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:55,528 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:39:55,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:39:55,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1527887175, now seen corresponding path program 1 times [2023-11-23 20:39:55,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:39:55,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158947795] [2023-11-23 20:39:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:39:56,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:39:56,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675535284] [2023-11-23 20:39:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:56,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:39:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:39:56,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:39:56,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:39:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:39:57,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:39:57,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:39:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 20:39:57,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:39:57,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:39:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158947795] [2023-11-23 20:39:57,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:39:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675535284] [2023-11-23 20:39:57,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675535284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:39:57,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:39:57,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:39:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934084065] [2023-11-23 20:39:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:39:57,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:39:57,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:39:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:39:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:39:57,267 INFO L87 Difference]: Start difference. First operand has 281 states, 167 states have (on average 1.251497005988024) internal successors, (209), 164 states have internal predecessors, (209), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 20:39:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:39:58,932 INFO L93 Difference]: Finished difference Result 558 states and 783 transitions. [2023-11-23 20:39:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:39:58,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 89 [2023-11-23 20:39:58,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:39:58,955 INFO L225 Difference]: With dead ends: 558 [2023-11-23 20:39:58,956 INFO L226 Difference]: Without dead ends: 281 [2023-11-23 20:39:58,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:39:58,967 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:39:58,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1296 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 20:39:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-23 20:39:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-23 20:39:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 165 states have internal predecessors, (200), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2023-11-23 20:39:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2023-11-23 20:39:59,071 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 89 [2023-11-23 20:39:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:39:59,072 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2023-11-23 20:39:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 20:39:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2023-11-23 20:39:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 20:39:59,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:59,078 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:39:59,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:39:59,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 20:39:59,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:39:59,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash 191245329, now seen corresponding path program 1 times [2023-11-23 20:39:59,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:39:59,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637125642] [2023-11-23 20:39:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:39:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 20:40:00,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637125642] [2023-11-23 20:40:00,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637125642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:00,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:00,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993704455] [2023-11-23 20:40:00,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:00,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:00,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:00,716 INFO L87 Difference]: Start difference. First operand 281 states and 374 transitions. Second operand has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 20:40:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:02,767 INFO L93 Difference]: Finished difference Result 527 states and 705 transitions. [2023-11-23 20:40:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:40:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 93 [2023-11-23 20:40:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:02,774 INFO L225 Difference]: With dead ends: 527 [2023-11-23 20:40:02,774 INFO L226 Difference]: Without dead ends: 283 [2023-11-23 20:40:02,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:02,777 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 0 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:02,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1186 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 20:40:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-23 20:40:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-23 20:40:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 164 states have (on average 1.225609756097561) internal successors, (201), 167 states have internal predecessors, (201), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (94), 85 states have call predecessors, (94), 84 states have call successors, (94) [2023-11-23 20:40:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 381 transitions. [2023-11-23 20:40:02,809 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 381 transitions. Word has length 93 [2023-11-23 20:40:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:02,810 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 381 transitions. [2023-11-23 20:40:02,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 20:40:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 381 transitions. [2023-11-23 20:40:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 20:40:02,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:02,813 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:02,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:02,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1575431197, now seen corresponding path program 1 times [2023-11-23 20:40:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:02,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205112614] [2023-11-23 20:40:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 20:40:05,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205112614] [2023-11-23 20:40:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205112614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:05,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 20:40:05,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836884865] [2023-11-23 20:40:05,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:05,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:05,510 INFO L87 Difference]: Start difference. First operand 283 states and 381 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 20:40:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:09,906 INFO L93 Difference]: Finished difference Result 550 states and 739 transitions. [2023-11-23 20:40:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 97 [2023-11-23 20:40:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:09,911 INFO L225 Difference]: With dead ends: 550 [2023-11-23 20:40:09,911 INFO L226 Difference]: Without dead ends: 285 [2023-11-23 20:40:09,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:09,914 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:09,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1803 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 20:40:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-23 20:40:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-11-23 20:40:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 165 states have (on average 1.2242424242424241) internal successors, (202), 169 states have internal predecessors, (202), 86 states have call successors, (86), 30 states have call predecessors, (86), 33 states have return successors, (95), 85 states have call predecessors, (95), 84 states have call successors, (95) [2023-11-23 20:40:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 383 transitions. [2023-11-23 20:40:09,942 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 383 transitions. Word has length 97 [2023-11-23 20:40:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:09,943 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 383 transitions. [2023-11-23 20:40:09,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 20:40:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 383 transitions. [2023-11-23 20:40:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 20:40:09,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:09,946 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:09,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:40:09,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:09,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash 292891649, now seen corresponding path program 1 times [2023-11-23 20:40:09,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:09,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679582066] [2023-11-23 20:40:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 20:40:11,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679582066] [2023-11-23 20:40:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679582066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989333328] [2023-11-23 20:40:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:11,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:11,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:11,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:11,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:40:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:12,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 20:40:12,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 20:40:12,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:12,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989333328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:12,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:12,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-23 20:40:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834011205] [2023-11-23 20:40:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:12,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:12,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:40:12,771 INFO L87 Difference]: Start difference. First operand 285 states and 383 transitions. Second operand has 8 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 20:40:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:15,783 INFO L93 Difference]: Finished difference Result 555 states and 744 transitions. [2023-11-23 20:40:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:40:15,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 103 [2023-11-23 20:40:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:15,789 INFO L225 Difference]: With dead ends: 555 [2023-11-23 20:40:15,789 INFO L226 Difference]: Without dead ends: 288 [2023-11-23 20:40:15,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 20:40:15,793 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:15,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2082 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 20:40:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-23 20:40:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2023-11-23 20:40:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 166 states have (on average 1.2228915662650603) internal successors, (203), 169 states have internal predecessors, (203), 86 states have call successors, (86), 30 states have call predecessors, (86), 33 states have return successors, (95), 86 states have call predecessors, (95), 84 states have call successors, (95) [2023-11-23 20:40:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 384 transitions. [2023-11-23 20:40:15,828 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 384 transitions. Word has length 103 [2023-11-23 20:40:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:15,829 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 384 transitions. [2023-11-23 20:40:15,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 20:40:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 384 transitions. [2023-11-23 20:40:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 20:40:15,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:15,833 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:15,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:16,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:16,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:16,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1802692595, now seen corresponding path program 1 times [2023-11-23 20:40:16,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:16,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063290094] [2023-11-23 20:40:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:16,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 20:40:18,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063290094] [2023-11-23 20:40:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063290094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:18,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898610392] [2023-11-23 20:40:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:18,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:18,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:18,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:18,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:40:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:19,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 2575 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:40:19,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 20:40:19,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:19,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898610392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:19,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:19,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-11-23 20:40:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700585594] [2023-11-23 20:40:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:19,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:19,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:19,569 INFO L87 Difference]: Start difference. First operand 286 states and 384 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 20:40:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,228 INFO L93 Difference]: Finished difference Result 566 states and 758 transitions. [2023-11-23 20:40:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:40:21,229 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), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 107 [2023-11-23 20:40:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:21,232 INFO L225 Difference]: With dead ends: 566 [2023-11-23 20:40:21,232 INFO L226 Difference]: Without dead ends: 288 [2023-11-23 20:40:21,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:21,235 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 0 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:21,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1182 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 20:40:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-23 20:40:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-23 20:40:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 167 states have (on average 1.221556886227545) internal successors, (204), 171 states have internal predecessors, (204), 86 states have call successors, (86), 30 states have call predecessors, (86), 34 states have return successors, (96), 86 states have call predecessors, (96), 84 states have call successors, (96) [2023-11-23 20:40:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 386 transitions. [2023-11-23 20:40:21,256 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 386 transitions. Word has length 107 [2023-11-23 20:40:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,256 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 386 transitions. [2023-11-23 20:40:21,257 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), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 20:40:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 386 transitions. [2023-11-23 20:40:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 20:40:21,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,259 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:21,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:21,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:21,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:21,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash -590095965, now seen corresponding path program 1 times [2023-11-23 20:40:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074172869] [2023-11-23 20:40:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924658210] [2023-11-23 20:40:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:21,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:21,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0dca26d-6fca-43df-ab07-3a665456bbdb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process