./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX --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 6be9b66ca328a7a6212dacb956e89cedd13b1d7b23d6b6080c393a898cf27e7a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:15,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:16,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:43:16,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:16,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:16,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:16,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:16,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:16,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:16,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:16,094 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:16,095 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:16,096 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:16,098 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:16,098 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:16,099 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:16,099 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:16,100 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:16,100 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:16,101 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:16,101 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:16,102 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:16,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:16,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:16,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:16,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:16,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:16,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:16,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:16,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:16,109 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:16,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:16,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:16,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:16,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:16,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:16,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:16,111 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:16,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:16,112 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:16,112 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:16,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:16,114 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_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be9b66ca328a7a6212dacb956e89cedd13b1d7b23d6b6080c393a898cf27e7a [2023-11-12 00:43:16,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:16,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:16,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:16,570 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:16,570 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:16,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i [2023-11-12 00:43:20,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:20,848 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:20,850 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i [2023-11-12 00:43:20,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/data/d5be2d467/f6c177e611e14673add28814ef28d488/FLAGa7b4a864d [2023-11-12 00:43:20,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/data/d5be2d467/f6c177e611e14673add28814ef28d488 [2023-11-12 00:43:20,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:20,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:20,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:20,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:20,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:20,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:20" (1/1) ... [2023-11-12 00:43:20,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b04a6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:20, skipping insertion in model container [2023-11-12 00:43:20,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:20" (1/1) ... [2023-11-12 00:43:21,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:21,462 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_cdf83d38-70b8-4cea-b378-5c1096cfe599/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4493,4506] [2023-11-12 00:43:21,472 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_cdf83d38-70b8-4cea-b378-5c1096cfe599/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4553,4566] [2023-11-12 00:43:22,818 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,829 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,831 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,833 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,858 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,859 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,862 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,863 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,867 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,868 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:22,869 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:23,490 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:43:23,491 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:43:23,492 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:43:23,494 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:43:23,496 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:43:23,497 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:43:23,498 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:43:23,499 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:43:23,500 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:43:23,501 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:43:24,213 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,215 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,262 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,263 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,273 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,273 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,301 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,302 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,303 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,304 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,305 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,306 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,306 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:24,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:24,476 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_cdf83d38-70b8-4cea-b378-5c1096cfe599/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4493,4506] [2023-11-12 00:43:24,478 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_cdf83d38-70b8-4cea-b378-5c1096cfe599/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness_negated.i[4553,4566] [2023-11-12 00:43:24,539 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,540 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,541 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,541 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,544 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,559 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,561 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,562 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,563 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,564 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,565 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,565 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,566 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,606 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:43:24,607 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:43:24,608 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:43:24,609 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:43:24,610 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:43:24,611 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:43:24,611 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:43:24,613 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:43:24,614 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:43:24,614 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:43:24,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-12 00:43:24,807 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,808 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,818 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,819 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,823 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,824 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,895 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,897 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,897 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,898 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,898 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,899 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,900 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:43:24,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:25,322 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,322 WARN L672 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,322 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,322 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,323 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,323 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,323 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,323 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,323 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,323 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,324 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,324 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,324 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,324 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,324 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,325 WARN L672 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,325 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,325 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:25,333 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:25,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25 WrapperNode [2023-11-12 00:43:25,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:25,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:25,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:25,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:25,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,600 INFO L138 Inliner]: procedures = 772, calls = 2447, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 623 [2023-11-12 00:43:25,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:25,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:25,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:25,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:25,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:25,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:25,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:25,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:25,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:25,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:25,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:25,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 00:43:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:43:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:43:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:43:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:43:25,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:43:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-12 00:43:25,880 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-12 00:43:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:43:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:43:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:43:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:43:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:43:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:43:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:43:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:43:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:43:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:43:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:43:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:43:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:43:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:43:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-12 00:43:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-12 00:43:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2023-11-12 00:43:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2023-11-12 00:43:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-12 00:43:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-12 00:43:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2023-11-12 00:43:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2023-11-12 00:43:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:43:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:43:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2023-11-12 00:43:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2023-11-12 00:43:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-12 00:43:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-12 00:43:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:43:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:43:25,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:43:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:43:25,887 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:43:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:43:26,305 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:26,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:26,443 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2023-11-12 00:43:27,753 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:28,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:28,045 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:43:28,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:28 BoogieIcfgContainer [2023-11-12 00:43:28,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:28,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:28,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:28,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:28,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:20" (1/3) ... [2023-11-12 00:43:28,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49865bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:28, skipping insertion in model container [2023-11-12 00:43:28,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (2/3) ... [2023-11-12 00:43:28,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49865bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:28, skipping insertion in model container [2023-11-12 00:43:28,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:28" (3/3) ... [2023-11-12 00:43:28,058 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness_negated.i [2023-11-12 00:43:28,107 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:28,107 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:43:28,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:28,169 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;@1f8c4a6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:28,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:43:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-12 00:43:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-12 00:43:28,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:28,192 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:28,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:28,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash -966157764, now seen corresponding path program 1 times [2023-11-12 00:43:28,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:28,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341062856] [2023-11-12 00:43:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:28,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:28,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:43:28,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237613085] [2023-11-12 00:43:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:28,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:28,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:28,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:28,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:43:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:29,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:43:29,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-12 00:43:29,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:29,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:29,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341062856] [2023-11-12 00:43:29,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:43:29,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237613085] [2023-11-12 00:43:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237613085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:29,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:29,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082882542] [2023-11-12 00:43:29,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:29,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:43:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:43:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:29,689 INFO L87 Difference]: Start difference. First operand has 131 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 73 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:43:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:30,023 INFO L93 Difference]: Finished difference Result 199 states and 263 transitions. [2023-11-12 00:43:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:43:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2023-11-12 00:43:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:30,036 INFO L225 Difference]: With dead ends: 199 [2023-11-12 00:43:30,036 INFO L226 Difference]: Without dead ends: 129 [2023-11-12 00:43:30,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:30,044 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:30,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-12 00:43:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-12 00:43:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-12 00:43:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2023-11-12 00:43:30,099 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 110 [2023-11-12 00:43:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:30,101 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2023-11-12 00:43:30,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-12 00:43:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2023-11-12 00:43:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 00:43:30,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:30,106 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:30,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:43:30,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:43:30,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:30,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 696511926, now seen corresponding path program 1 times [2023-11-12 00:43:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32825517] [2023-11-12 00:43:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:30,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:43:30,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107455063] [2023-11-12 00:43:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:30,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:30,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:30,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:43:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:31,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:43:31,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-12 00:43:31,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-12 00:43:31,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32825517] [2023-11-12 00:43:31,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:43:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107455063] [2023-11-12 00:43:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107455063] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:31,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:43:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-12 00:43:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853828978] [2023-11-12 00:43:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:31,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:43:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:31,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:43:31,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:43:31,821 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-12 00:43:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:32,746 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2023-11-12 00:43:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:43:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 115 [2023-11-12 00:43:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:32,751 INFO L225 Difference]: With dead ends: 178 [2023-11-12 00:43:32,751 INFO L226 Difference]: Without dead ends: 131 [2023-11-12 00:43:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:43:32,754 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:32,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 677 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:43:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-12 00:43:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-12 00:43:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-12 00:43:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2023-11-12 00:43:32,783 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 115 [2023-11-12 00:43:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:32,785 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2023-11-12 00:43:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-12 00:43:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2023-11-12 00:43:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-12 00:43:32,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:32,788 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:32,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:33,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:33,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:33,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash -252917546, now seen corresponding path program 1 times [2023-11-12 00:43:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419571001] [2023-11-12 00:43:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:33,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:43:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21817904] [2023-11-12 00:43:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:33,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:33,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:33,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:43:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:33,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:43:33,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-12 00:43:33,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:33,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419571001] [2023-11-12 00:43:33,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:43:33,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21817904] [2023-11-12 00:43:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21817904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:33,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:33,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271753544] [2023-11-12 00:43:33,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:33,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:43:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:43:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:33,990 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-12 00:43:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:34,341 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2023-11-12 00:43:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:43:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2023-11-12 00:43:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:34,345 INFO L225 Difference]: With dead ends: 256 [2023-11-12 00:43:34,345 INFO L226 Difference]: Without dead ends: 135 [2023-11-12 00:43:34,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:34,348 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:34,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 548 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-12 00:43:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-12 00:43:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.16) internal successors, (87), 77 states have internal predecessors, (87), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-12 00:43:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2023-11-12 00:43:34,389 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 116 [2023-11-12 00:43:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2023-11-12 00:43:34,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-12 00:43:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2023-11-12 00:43:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 00:43:34,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:34,397 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:34,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:34,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:34,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:34,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -668375006, now seen corresponding path program 1 times [2023-11-12 00:43:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458394956] [2023-11-12 00:43:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:34,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-12 00:43:38,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:38,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458394956] [2023-11-12 00:43:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458394956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:38,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 00:43:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007317357] [2023-11-12 00:43:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:38,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:43:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:43:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:43:38,126 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:43:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:39,690 INFO L93 Difference]: Finished difference Result 186 states and 231 transitions. [2023-11-12 00:43:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:43:39,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 124 [2023-11-12 00:43:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:39,696 INFO L225 Difference]: With dead ends: 186 [2023-11-12 00:43:39,696 INFO L226 Difference]: Without dead ends: 137 [2023-11-12 00:43:39,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:43:39,698 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 33 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:39,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1080 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 00:43:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-12 00:43:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-12 00:43:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 79 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 20 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2023-11-12 00:43:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2023-11-12 00:43:39,733 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 124 [2023-11-12 00:43:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:39,735 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2023-11-12 00:43:39,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:43:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2023-11-12 00:43:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-12 00:43:39,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:39,738 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:43:39,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:39,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1310299473, now seen corresponding path program 1 times [2023-11-12 00:43:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158804738] [2023-11-12 00:43:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-12 00:43:42,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:42,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158804738] [2023-11-12 00:43:42,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158804738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:42,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:42,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-12 00:43:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53919296] [2023-11-12 00:43:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:42,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:43:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:43:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:43:42,698 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-12 00:43:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:45,211 INFO L93 Difference]: Finished difference Result 194 states and 240 transitions. [2023-11-12 00:43:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:43:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 128 [2023-11-12 00:43:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:45,216 INFO L225 Difference]: With dead ends: 194 [2023-11-12 00:43:45,216 INFO L226 Difference]: Without dead ends: 148 [2023-11-12 00:43:45,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:43:45,218 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 84 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:45,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 576 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:43:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-12 00:43:45,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 135. [2023-11-12 00:43:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 75 states have (on average 1.16) internal successors, (87), 77 states have internal predecessors, (87), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-12 00:43:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2023-11-12 00:43:45,241 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 128 [2023-11-12 00:43:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:45,242 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2023-11-12 00:43:45,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-12 00:43:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2023-11-12 00:43:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-12 00:43:45,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:45,245 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:45,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:43:45,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:45,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:45,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1779038436, now seen corresponding path program 1 times [2023-11-12 00:43:45,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:45,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644437064] [2023-11-12 00:43:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:45,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-12 00:43:50,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644437064] [2023-11-12 00:43:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644437064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223723119] [2023-11-12 00:43:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:50,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:50,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:50,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:43:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:51,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 00:43:51,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-12 00:43:51,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223723119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:51,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:43:51,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 23 [2023-11-12 00:43:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686062324] [2023-11-12 00:43:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:51,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:43:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:43:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:43:51,951 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 7 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-12 00:43:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:52,713 INFO L93 Difference]: Finished difference Result 252 states and 315 transitions. [2023-11-12 00:43:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 130 [2023-11-12 00:43:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:52,717 INFO L225 Difference]: With dead ends: 252 [2023-11-12 00:43:52,717 INFO L226 Difference]: Without dead ends: 137 [2023-11-12 00:43:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:43:52,719 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 110 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:52,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 351 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:43:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-12 00:43:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-12 00:43:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 79 states have internal predecessors, (88), 40 states have call successors, (40), 17 states have call predecessors, (40), 20 states have return successors, (45), 40 states have call predecessors, (45), 39 states have call successors, (45) [2023-11-12 00:43:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2023-11-12 00:43:52,743 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 130 [2023-11-12 00:43:52,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:52,744 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2023-11-12 00:43:52,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-12 00:43:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2023-11-12 00:43:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-12 00:43:52,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:52,747 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:52,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:52,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 00:43:52,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:52,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash -509345350, now seen corresponding path program 1 times [2023-11-12 00:43:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721061123] [2023-11-12 00:43:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-12 00:43:54,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721061123] [2023-11-12 00:43:54,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721061123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211627441] [2023-11-12 00:43:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:54,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:54,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:54,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:54,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf83d38-70b8-4cea-b378-5c1096cfe599/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:43:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:55,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 00:43:55,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:55,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-12 00:43:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-12 00:43:56,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:56,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211627441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:56,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:43:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2023-11-12 00:43:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212396550] [2023-11-12 00:43:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:43:56,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:43:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:43:56,036 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-12 00:44:00,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]