./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/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_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/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_5263c35c-6863-40de-8463-66e086bd962b/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 a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:30,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:30,625 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:08:30,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:30,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:30,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:30,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:30,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:30,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:30,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:30,661 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:30,662 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:30,662 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:30,663 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:30,663 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:30,664 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:30,664 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:30,665 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:30,665 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:30,666 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:30,666 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:30,667 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:30,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:30,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:30,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:30,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:30,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:30,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:30,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:30,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:30,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:30,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:30,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:30,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:30,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:30,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:30,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:30,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:30,674 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:30,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:30,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:30,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:30,675 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:30,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:30,675 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_5263c35c-6863-40de-8463-66e086bd962b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 [2023-11-23 21:08:30,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:30,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:30,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:30,949 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:30,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:30,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2023-11-23 21:08:34,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:34,780 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:34,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2023-11-23 21:08:34,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/data/3e48364c3/ce340b684d6441aea5a8fa48bbdeeaa6/FLAG13762de0f [2023-11-23 21:08:34,858 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/data/3e48364c3/ce340b684d6441aea5a8fa48bbdeeaa6 [2023-11-23 21:08:34,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:34,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:34,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:34,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:34,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:34,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:34" (1/1) ... [2023-11-23 21:08:34,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff66b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:34, skipping insertion in model container [2023-11-23 21:08:34,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:34" (1/1) ... [2023-11-23 21:08:35,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:35,296 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_5263c35c-6863-40de-8463-66e086bd962b/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2023-11-23 21:08:35,305 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_5263c35c-6863-40de-8463-66e086bd962b/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2023-11-23 21:08:36,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,620 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,627 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:36,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:08:37,227 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:08:37,231 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:08:37,235 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:08:37,237 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:08:37,244 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:08:37,245 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:08:37,246 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:08:37,247 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:08:37,249 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:08:37,899 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,931 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,934 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,966 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,969 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,970 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:37,970 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:38,071 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:38,094 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_5263c35c-6863-40de-8463-66e086bd962b/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2023-11-23 21:08:38,095 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_5263c35c-6863-40de-8463-66e086bd962b/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2023-11-23 21:08:38,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,170 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,170 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,171 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,172 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,173 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,174 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,174 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,175 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,211 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:08:38,212 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:08:38,213 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:08:38,214 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:08:38,215 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:08:38,216 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:08:38,217 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:08:38,218 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:08:38,218 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:08:38,219 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:08:38,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2023-11-23 21:08:38,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:08:38,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:38,815 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,815 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,816 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,817 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,817 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,817 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,817 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,817 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,817 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,818 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,818 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,818 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:38,826 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:38,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38 WrapperNode [2023-11-23 21:08:38,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:38,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:38,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:38,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:38,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:38,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,065 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 67, calls inlined = 21, statements flattened = 1362 [2023-11-23 21:08:39,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:39,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:39,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:39,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:39,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:39,309 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:39,309 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:39,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:39,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (1/1) ... [2023-11-23 21:08:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:39,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:39,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:39,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:08:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:08:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:08:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:08:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:08:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:08:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:08:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:08:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2023-11-23 21:08:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2023-11-23 21:08:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 21:08:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 21:08:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:08:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:08:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-23 21:08:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-23 21:08:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:08:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:08:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:08:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:08:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:08:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 21:08:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 21:08:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 21:08:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 21:08:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:08:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:08:39,389 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:08:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-23 21:08:39,389 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-23 21:08:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 21:08:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 21:08:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-23 21:08:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-23 21:08:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-23 21:08:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-23 21:08:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-23 21:08:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-23 21:08:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 21:08:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 21:08:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:08:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-23 21:08:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-23 21:08:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 21:08:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 21:08:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 21:08:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-23 21:08:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-23 21:08:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-23 21:08:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-23 21:08:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-23 21:08:39,394 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-23 21:08:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:39,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 21:08:39,394 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 21:08:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:08:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:08:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:08:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:08:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:08:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 21:08:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 21:08:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-23 21:08:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-23 21:08:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-23 21:08:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-23 21:08:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:08:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:08:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:39,823 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:39,826 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:40,240 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-23 21:08:40,300 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-23 21:08:41,528 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-23 21:08:41,528 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-23 21:08:42,428 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:43,013 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:43,013 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-23 21:08:43,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:43 BoogieIcfgContainer [2023-11-23 21:08:43,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:43,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:43,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:43,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:43,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:34" (1/3) ... [2023-11-23 21:08:43,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6da37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:43, skipping insertion in model container [2023-11-23 21:08:43,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:38" (2/3) ... [2023-11-23 21:08:43,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6da37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:43, skipping insertion in model container [2023-11-23 21:08:43,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:43" (3/3) ... [2023-11-23 21:08:43,024 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness.i [2023-11-23 21:08:43,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:43,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:43,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:43,134 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;@6f699c23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:43,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:43,142 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 21:08:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 21:08:43,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:43,161 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 21:08:43,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -380421883, now seen corresponding path program 1 times [2023-11-23 21:08:43,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:43,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735405432] [2023-11-23 21:08:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:43,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:43,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949573564] [2023-11-23 21:08:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:43,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:43,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:43,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:08:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:44,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:08:44,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:44,698 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 21:08:44,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:44,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:44,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735405432] [2023-11-23 21:08:44,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949573564] [2023-11-23 21:08:44,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949573564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:44,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:44,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173457498] [2023-11-23 21:08:44,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:44,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:08:44,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:08:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:44,755 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 21:08:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:46,505 INFO L93 Difference]: Finished difference Result 558 states and 783 transitions. [2023-11-23 21:08:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:08:46,507 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 21:08:46,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:46,523 INFO L225 Difference]: With dead ends: 558 [2023-11-23 21:08:46,523 INFO L226 Difference]: Without dead ends: 281 [2023-11-23 21:08:46,531 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 21:08:46,534 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:46,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1296 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:08:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-23 21:08:46,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-23 21:08:46,684 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 21:08:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2023-11-23 21:08:46,710 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 89 [2023-11-23 21:08:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:46,711 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2023-11-23 21:08:46,711 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 21:08:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2023-11-23 21:08:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 21:08:46,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:46,738 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 21:08:46,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:08:46,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:46,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 865318607, now seen corresponding path program 1 times [2023-11-23 21:08:46,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:46,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093075067] [2023-11-23 21:08:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 21:08:49,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:49,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093075067] [2023-11-23 21:08:49,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093075067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:49,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:49,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:08:49,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255331035] [2023-11-23 21:08:49,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:49,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:08:49,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:08:49,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:08:49,828 INFO L87 Difference]: Start difference. First operand 281 states and 374 transitions. Second operand has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 21:08:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:54,766 INFO L93 Difference]: Finished difference Result 546 states and 725 transitions. [2023-11-23 21:08:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:54,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 93 [2023-11-23 21:08:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:54,772 INFO L225 Difference]: With dead ends: 546 [2023-11-23 21:08:54,773 INFO L226 Difference]: Without dead ends: 283 [2023-11-23 21:08:54,774 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 21:08:54,776 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:54,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2089 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 21:08:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-23 21:08:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-23 21:08:54,821 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, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2023-11-23 21:08:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 376 transitions. [2023-11-23 21:08:54,825 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 376 transitions. Word has length 93 [2023-11-23 21:08:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:54,826 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 376 transitions. [2023-11-23 21:08:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 21:08:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 376 transitions. [2023-11-23 21:08:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 21:08:54,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:54,836 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] [2023-11-23 21:08:54,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:08:54,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:54,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1430066931, now seen corresponding path program 1 times [2023-11-23 21:08:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:54,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048675466] [2023-11-23 21:08:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:54,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 21:08:56,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:56,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048675466] [2023-11-23 21:08:56,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048675466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:56,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456826435] [2023-11-23 21:08:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:56,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:56,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:56,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:08:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:57,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:08:57,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:57,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 21:08:57,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 21:09:00,002 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int)) (and (not (= |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| 0)) (exists ((|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))))) (exists ((|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (and (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))) (not (= |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| 0)))) (exists ((|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (and (not (= |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| 0)) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))))) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int)) (and (exists ((|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))) (not (= |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| 0))))) is different from true [2023-11-23 21:09:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 21:09:04,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:04,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456826435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:04,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:04,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2023-11-23 21:09:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798733864] [2023-11-23 21:09:04,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:04,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:09:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:04,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:09:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=147, Unknown=3, NotChecked=24, Total=210 [2023-11-23 21:09:04,380 INFO L87 Difference]: Start difference. First operand 283 states and 376 transitions. Second operand has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 21:09:07,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:10,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:09:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:14,582 INFO L93 Difference]: Finished difference Result 556 states and 737 transitions. [2023-11-23 21:09:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:09:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 5 states have call successors, (21) Word has length 99 [2023-11-23 21:09:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:14,586 INFO L225 Difference]: With dead ends: 556 [2023-11-23 21:09:14,587 INFO L226 Difference]: Without dead ends: 289 [2023-11-23 21:09:14,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=48, Invalid=193, Unknown=3, NotChecked=28, Total=272 [2023-11-23 21:09:14,589 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 23 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:14,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1740 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 448 Invalid, 1 Unknown, 380 Unchecked, 10.1s Time] [2023-11-23 21:09:14,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-23 21:09:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-23 21:09:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 168 states have (on average 1.2202380952380953) internal successors, (205), 171 states have internal predecessors, (205), 87 states have call successors, (87), 31 states have call predecessors, (87), 33 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2023-11-23 21:09:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2023-11-23 21:09:14,619 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 99 [2023-11-23 21:09:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:14,620 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2023-11-23 21:09:14,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 21:09:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2023-11-23 21:09:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 21:09:14,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:14,622 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 21:09:14,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:09:14,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5263c35c-6863-40de-8463-66e086bd962b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:14,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:14,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1263732826, now seen corresponding path program 1 times [2023-11-23 21:09:14,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:14,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065663094] [2023-11-23 21:09:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:09:15,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065663094] [2023-11-23 21:09:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065663094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:15,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:15,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:09:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899493649] [2023-11-23 21:09:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:15,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:09:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:09:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:15,787 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:09:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:17,426 INFO L93 Difference]: Finished difference Result 543 states and 720 transitions. [2023-11-23 21:09:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:09:17,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 103 [2023-11-23 21:09:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:17,430 INFO L225 Difference]: With dead ends: 543 [2023-11-23 21:09:17,431 INFO L226 Difference]: Without dead ends: 291 [2023-11-23 21:09:17,432 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 21:09:17,433 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 0 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:17,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1189 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:09:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-23 21:09:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-23 21:09:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 169 states have (on average 1.2189349112426036) internal successors, (206), 173 states have internal predecessors, (206), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-23 21:09:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 388 transitions. [2023-11-23 21:09:17,460 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 388 transitions. Word has length 103 [2023-11-23 21:09:17,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:17,461 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 388 transitions. [2023-11-23 21:09:17,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:09:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 388 transitions. [2023-11-23 21:09:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 21:09:17,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:17,464 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 21:09:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:09:17,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:17,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1199816281, now seen corresponding path program 1 times [2023-11-23 21:09:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:17,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306986761] [2023-11-23 21:09:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:17,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 21:09:19,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:19,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306986761] [2023-11-23 21:09:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306986761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:19,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:09:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728522168] [2023-11-23 21:09:19,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:09:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:09:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:19,246 INFO L87 Difference]: Start difference. First operand 291 states and 388 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 21:09:22,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:22,130 INFO L93 Difference]: Finished difference Result 297 states and 393 transitions. [2023-11-23 21:09:22,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:09:22,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 107 [2023-11-23 21:09:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:22,135 INFO L225 Difference]: With dead ends: 297 [2023-11-23 21:09:22,135 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 21:09:22,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 21:09:22,137 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 5 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:22,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1260 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 21:09:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 21:09:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-23 21:09:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 172 states have (on average 1.2151162790697674) internal successors, (209), 176 states have internal predecessors, (209), 87 states have call successors, (87), 32 states have call predecessors, (87), 35 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-23 21:09:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 391 transitions. [2023-11-23 21:09:22,162 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 391 transitions. Word has length 107 [2023-11-23 21:09:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:22,163 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 391 transitions. [2023-11-23 21:09:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 21:09:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 391 transitions. [2023-11-23 21:09:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 21:09:22,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:22,166 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:22,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:09:22,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:22,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:22,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1568163705, now seen corresponding path program 1 times [2023-11-23 21:09:22,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:22,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225609148] [2023-11-23 21:09:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms