./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:29:12,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:29:12,588 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:29:12,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:29:12,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:29:12,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:29:12,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:29:12,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:29:12,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:29:12,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:29:12,645 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:29:12,646 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:29:12,646 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:29:12,648 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:29:12,649 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:29:12,649 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:29:12,650 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:29:12,650 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:29:12,651 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:29:12,651 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:29:12,652 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:29:12,653 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:29:12,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:29:12,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:29:12,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:29:12,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:29:12,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:29:12,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:29:12,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:29:12,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:29:12,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:29:12,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:29:12,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:29:12,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:29:12,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:12,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:29:12,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:29:12,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:29:12,662 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:29:12,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:29:12,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:29:12,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:29:12,664 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:29:12,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:29:12,665 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_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2023-11-23 21:29:13,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:29:13,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:29:13,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:29:13,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:29:13,045 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:29:13,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2023-11-23 21:29:16,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:16,753 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:16,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2023-11-23 21:29:16,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/data/445db6ef8/a9cf67c028754c2cb3dd9eebfcd2b5bc/FLAGb87d020c9 [2023-11-23 21:29:16,830 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/data/445db6ef8/a9cf67c028754c2cb3dd9eebfcd2b5bc [2023-11-23 21:29:16,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:16,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:16,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:16,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:16,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:16,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:16" (1/1) ... [2023-11-23 21:29:16,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5b8ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:16, skipping insertion in model container [2023-11-23 21:29:16,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:16" (1/1) ... [2023-11-23 21:29:17,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:17,360 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_b219fb60-e48c-4602-8de5-00b75becdf7f/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2023-11-23 21:29:17,372 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_b219fb60-e48c-4602-8de5-00b75becdf7f/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2023-11-23 21:29:18,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,677 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,677 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,678 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,680 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,697 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,698 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,707 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:18,707 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:19,284 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:29:19,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:29:19,293 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:29:19,299 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:29:19,301 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:29:19,302 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:29:19,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:29:19,308 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:29:19,309 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:29:19,310 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:29:19,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:19,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:19,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,002 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,011 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,011 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,035 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:20,149 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:20,173 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_b219fb60-e48c-4602-8de5-00b75becdf7f/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2023-11-23 21:29:20,174 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_b219fb60-e48c-4602-8de5-00b75becdf7f/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2023-11-23 21:29:20,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,249 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,250 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,254 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,254 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,357 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:29:20,358 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:29:20,359 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:29:20,360 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:29:20,361 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:29:20,363 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:29:20,364 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:29:20,364 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:29:20,365 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:29:20,367 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:29:20,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-23 21:29:20,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,540 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,559 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,562 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:29:20,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:21,021 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,021 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,021 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,021 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,021 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,022 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,023 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,023 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,023 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,023 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,023 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,023 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:21,032 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:21,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21 WrapperNode [2023-11-23 21:29:21,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:21,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:21,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:21,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:21,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,273 INFO L138 Inliner]: procedures = 772, calls = 2431, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 848 [2023-11-23 21:29:21,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:21,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:21,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:21,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:21,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:21,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:21,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:21,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:21,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (1/1) ... [2023-11-23 21:29:21,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:21,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:21,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:21,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:29:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:29:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:29:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:29:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:29:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:29:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:29:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:29:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 21:29:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 21:29:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:29:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:29:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:29:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:29:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:29:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 21:29:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 21:29:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:29:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:29:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:29:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:29:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 21:29:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 21:29:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-23 21:29:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-23 21:29:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:29:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 21:29:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 21:29:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-23 21:29:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-23 21:29:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 21:29:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 21:29:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 21:29:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:29:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:29:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 21:29:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 21:29:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:29:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:29:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:29:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:29:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:29:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 21:29:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 21:29:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-23 21:29:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-23 21:29:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:21,940 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:21,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:23,270 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-23 21:29:23,291 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:23,749 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:23,752 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:29:23,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:23 BoogieIcfgContainer [2023-11-23 21:29:23,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:23,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:23,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:23,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:23,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:16" (1/3) ... [2023-11-23 21:29:23,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2741a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:23, skipping insertion in model container [2023-11-23 21:29:23,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:21" (2/3) ... [2023-11-23 21:29:23,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2741a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:23, skipping insertion in model container [2023-11-23 21:29:23,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:23" (3/3) ... [2023-11-23 21:29:23,775 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2023-11-23 21:29:23,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:23,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:29:23,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:23,883 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;@23b46857, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:23,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:29:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 21:29:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:29:23,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:23,903 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:23,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:23,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1399697526, now seen corresponding path program 1 times [2023-11-23 21:29:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780011310] [2023-11-23 21:29:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 21:29:24,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780011310] [2023-11-23 21:29:24,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780011310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:24,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:24,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:29:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876865605] [2023-11-23 21:29:24,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:29:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:29:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:25,000 INFO L87 Difference]: Start difference. First operand has 137 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:29:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:26,185 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2023-11-23 21:29:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:29:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 48 [2023-11-23 21:29:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:26,198 INFO L225 Difference]: With dead ends: 181 [2023-11-23 21:29:26,199 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:29:26,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:29:26,206 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 4 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:26,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 434 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:29:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:29:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 21:29:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 77 states have internal predecessors, (88), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 21:29:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2023-11-23 21:29:26,264 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 48 [2023-11-23 21:29:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:26,266 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2023-11-23 21:29:26,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:29:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2023-11-23 21:29:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 21:29:26,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:26,271 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:26,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:29:26,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:26,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:26,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1094767789, now seen corresponding path program 1 times [2023-11-23 21:29:26,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:26,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393808307] [2023-11-23 21:29:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:26,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:26,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:29:26,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67067880] [2023-11-23 21:29:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:26,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:26,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:26,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:26,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:29:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:27,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 21:29:27,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 21:29:27,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:27,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393808307] [2023-11-23 21:29:27,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:29:27,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67067880] [2023-11-23 21:29:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67067880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:29:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788641867] [2023-11-23 21:29:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:29:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:29:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:29:27,530 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:29:29,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:29,093 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2023-11-23 21:29:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:29:29,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2023-11-23 21:29:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:29,097 INFO L225 Difference]: With dead ends: 175 [2023-11-23 21:29:29,097 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:29:29,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:29:29,100 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:29,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:29:29,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:29:29,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 21:29:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.144736842105263) internal successors, (87), 77 states have internal predecessors, (87), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 21:29:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2023-11-23 21:29:29,133 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 68 [2023-11-23 21:29:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:29,134 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2023-11-23 21:29:29,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:29:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2023-11-23 21:29:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 21:29:29,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:29,139 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-23 21:29:29,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:29,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:29,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:29,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -881173024, now seen corresponding path program 1 times [2023-11-23 21:29:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:29,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409664192] [2023-11-23 21:29:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:29,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:29,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:29:29,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360196248] [2023-11-23 21:29:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:29,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:29,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:29,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:29:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:30,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:29:30,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 21:29:30,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:30,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409664192] [2023-11-23 21:29:30,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:29:30,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360196248] [2023-11-23 21:29:30,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360196248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:30,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:30,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:29:30,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579563474] [2023-11-23 21:29:30,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:29:30,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:30,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:29:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:30,442 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:29:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:31,146 INFO L93 Difference]: Finished difference Result 224 states and 267 transitions. [2023-11-23 21:29:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:29:31,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 94 [2023-11-23 21:29:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:31,150 INFO L225 Difference]: With dead ends: 224 [2023-11-23 21:29:31,150 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:29:31,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:31,153 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:31,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:29:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:29:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 21:29:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.131578947368421) internal successors, (86), 77 states have internal predecessors, (86), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 21:29:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2023-11-23 21:29:31,170 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 94 [2023-11-23 21:29:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:31,170 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2023-11-23 21:29:31,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:29:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2023-11-23 21:29:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 21:29:31,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:31,175 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-23 21:29:31,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:31,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:31,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash -192235514, now seen corresponding path program 1 times [2023-11-23 21:29:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338412409] [2023-11-23 21:29:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:31,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:29:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547119058] [2023-11-23 21:29:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:31,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:31,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:29:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:32,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 21:29:32,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:32,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:29:32,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:29:34,663 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1| Int)) (not (= 0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1|)))))) (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1|) 0))) (<= 2 |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|)))) is different from true [2023-11-23 21:29:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 21:29:35,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 21:29:38,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338412409] [2023-11-23 21:29:38,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:29:38,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547119058] [2023-11-23 21:29:38,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547119058] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:38,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:29:38,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 21:29:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200107714] [2023-11-23 21:29:38,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:29:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:38,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:29:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=143, Unknown=2, NotChecked=24, Total=210 [2023-11-23 21:29:38,054 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 21:29:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:42,999 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2023-11-23 21:29:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:29:43,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 103 [2023-11-23 21:29:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:43,013 INFO L225 Difference]: With dead ends: 172 [2023-11-23 21:29:43,018 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 21:29:43,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=69, Invalid=274, Unknown=3, NotChecked=34, Total=380 [2023-11-23 21:29:43,020 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 150 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:43,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 673 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 21:29:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 21:29:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-23 21:29:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 77 states have (on average 1.12987012987013) internal successors, (87), 79 states have internal predecessors, (87), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-23 21:29:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2023-11-23 21:29:43,063 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 103 [2023-11-23 21:29:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:43,064 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2023-11-23 21:29:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 21:29:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2023-11-23 21:29:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 21:29:43,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:43,074 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:43,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:43,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:43,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:43,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -930315145, now seen corresponding path program 1 times [2023-11-23 21:29:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814591750] [2023-11-23 21:29:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:43,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:29:43,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355977992] [2023-11-23 21:29:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:43,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:43,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:43,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:43,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:29:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:44,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:29:44,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 21:29:44,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:44,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814591750] [2023-11-23 21:29:44,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:29:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355977992] [2023-11-23 21:29:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355977992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:44,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:44,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:29:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134312258] [2023-11-23 21:29:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:44,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:29:44,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:44,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:29:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:44,470 INFO L87 Difference]: Start difference. First operand 135 states and 163 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:29:45,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:47,504 INFO L93 Difference]: Finished difference Result 180 states and 212 transitions. [2023-11-23 21:29:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:29:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 109 [2023-11-23 21:29:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:47,507 INFO L225 Difference]: With dead ends: 180 [2023-11-23 21:29:47,507 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 21:29:47,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:29:47,509 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:47,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 687 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 21:29:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 21:29:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-23 21:29:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-23 21:29:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2023-11-23 21:29:47,528 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 109 [2023-11-23 21:29:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:47,528 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2023-11-23 21:29:47,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:29:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2023-11-23 21:29:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 21:29:47,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:47,532 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:47,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:47,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:47,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:47,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash 642405513, now seen corresponding path program 1 times [2023-11-23 21:29:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:47,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907606144] [2023-11-23 21:29:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:47,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:29:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579993734] [2023-11-23 21:29:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:47,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:47,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:47,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:29:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:48,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:29:48,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 21:29:48,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:48,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:48,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907606144] [2023-11-23 21:29:48,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:29:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579993734] [2023-11-23 21:29:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579993734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:29:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383174829] [2023-11-23 21:29:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:29:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:29:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:29:48,942 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:29:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:51,373 INFO L93 Difference]: Finished difference Result 191 states and 223 transitions. [2023-11-23 21:29:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:29:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 120 [2023-11-23 21:29:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:51,376 INFO L225 Difference]: With dead ends: 191 [2023-11-23 21:29:51,376 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:29:51,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:29:51,378 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 5 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:51,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1203 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 21:29:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:29:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 21:29:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 78 states have internal predecessors, (83), 37 states have call successors, (37), 18 states have call predecessors, (37), 19 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2023-11-23 21:29:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2023-11-23 21:29:51,393 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 120 [2023-11-23 21:29:51,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:51,394 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2023-11-23 21:29:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:29:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2023-11-23 21:29:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 21:29:51,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:51,397 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:51,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 21:29:51,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:29:51,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:51,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1294348574, now seen corresponding path program 1 times [2023-11-23 21:29:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653754745] [2023-11-23 21:29:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:51,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:29:51,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354821184] [2023-11-23 21:29:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:51,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:51,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:51,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:51,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b219fb60-e48c-4602-8de5-00b75becdf7f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:29:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:52,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 21:29:52,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:52,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 21:29:52,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:29:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-23 21:29:53,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:53,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653754745] [2023-11-23 21:29:53,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:29:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354821184] [2023-11-23 21:29:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354821184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:53,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:53,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 21:29:53,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000133242] [2023-11-23 21:29:53,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:53,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 21:29:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 21:29:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:29:53,301 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 14 states have internal predecessors, (59), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 21:29:56,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:29:58,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:30:00,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:30:02,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:30:04,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:30:06,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:30:08,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:30:10,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 21:30:12,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]