./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91 --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 c76aa584f17d1e33f139a1a167c9edf580611a597c58d41f9a3cf9cc11662c3e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:43,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:43,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:48:43,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:43,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:43,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:43,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:43,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:43,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:43,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:43,978 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:43,980 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:43,980 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:43,982 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:43,983 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:43,983 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:43,984 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:43,984 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:43,985 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:43,985 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:43,986 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:43,987 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:43,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:43,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:43,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:43,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:43,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:43,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:43,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:43,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:43,992 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:43,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:43,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:43,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:43,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:43,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:43,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:43,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:48:43,994 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:43,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:43,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:43,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:48:43,995 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:43,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:43,996 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_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c76aa584f17d1e33f139a1a167c9edf580611a597c58d41f9a3cf9cc11662c3e [2023-11-24 23:48:44,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:44,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:44,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:44,308 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:44,309 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:44,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i [2023-11-24 23:48:47,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:47,893 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:47,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i [2023-11-24 23:48:47,936 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/data/25ea1f383/e4d2e9a2829d42a9b25d944087482c81/FLAG4300ca5aa [2023-11-24 23:48:47,952 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/data/25ea1f383/e4d2e9a2829d42a9b25d944087482c81 [2023-11-24 23:48:47,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:47,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:47,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:47,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:47,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:47,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:47" (1/1) ... [2023-11-24 23:48:47,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c869ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:47, skipping insertion in model container [2023-11-24 23:48:47,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:47" (1/1) ... [2023-11-24 23:48:48,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:48,326 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_1906c8a9-217b-4024-805c-bfdb21b4e72d/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i[4501,4514] [2023-11-24 23:48:48,335 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_1906c8a9-217b-4024-805c-bfdb21b4e72d/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i[4561,4574] [2023-11-24 23:48:49,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,434 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,438 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:49,892 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:48:49,894 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:48:49,895 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:48:49,897 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:48:49,899 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:48:49,900 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:48:49,901 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:48:49,902 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:48:49,903 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:48:49,904 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:48:50,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:50,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:48:50,267 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_1906c8a9-217b-4024-805c-bfdb21b4e72d/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i[4501,4514] [2023-11-24 23:48:50,269 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_1906c8a9-217b-4024-805c-bfdb21b4e72d/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness_negated.i[4561,4574] [2023-11-24 23:48:50,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,374 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,457 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:48:50,458 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:48:50,459 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:48:50,460 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:48:50,461 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:48:50,462 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:48:50,462 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:48:50,463 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:48:50,464 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:48:50,465 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:48:50,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:50,552 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-24 23:48:50,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:51,088 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,089 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,089 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,089 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,089 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,090 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,090 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,090 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,090 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,090 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,090 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,091 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,091 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,091 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,091 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:51,100 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:48:51,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51 WrapperNode [2023-11-24 23:48:51,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:51,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:51,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:48:51,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:48:51,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,316 INFO L138 Inliner]: procedures = 688, calls = 1515, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 619 [2023-11-24 23:48:51,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:51,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:48:51,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:48:51,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:48:51,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:48:51,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:48:51,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:48:51,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:48:51,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (1/1) ... [2023-11-24 23:48:51,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:51,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:51,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:48:51,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:48:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-24 23:48:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-24 23:48:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:48:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-24 23:48:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-24 23:48:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-24 23:48:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-24 23:48:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:48:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:48:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:48:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:48:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:48:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:48:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:48:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:48:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:48:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:48:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:48:51,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:48:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2023-11-24 23:48:51,584 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2023-11-24 23:48:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:48:51,584 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:48:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-24 23:48:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-24 23:48:51,585 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:48:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:48:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-24 23:48:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-24 23:48:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-24 23:48:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-24 23:48:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:48:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:48:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:48:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:48:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:48:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:48:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:48:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:48:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:48:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:48:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-24 23:48:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-24 23:48:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-24 23:48:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-24 23:48:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:48:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:48:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:48:51,990 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:48:51,995 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:48:53,018 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:48:53,340 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:48:53,340 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 23:48:53,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:48:53 BoogieIcfgContainer [2023-11-24 23:48:53,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:48:53,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:48:53,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:48:53,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:48:53,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:48:47" (1/3) ... [2023-11-24 23:48:53,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@905d357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:48:53, skipping insertion in model container [2023-11-24 23:48:53,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:51" (2/3) ... [2023-11-24 23:48:53,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@905d357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:48:53, skipping insertion in model container [2023-11-24 23:48:53,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:48:53" (3/3) ... [2023-11-24 23:48:53,357 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness_negated.i [2023-11-24 23:48:53,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:48:53,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:48:53,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:48:53,461 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;@432db587, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:48:53,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:48:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 80 states have (on average 1.2125) internal successors, (97), 81 states have internal predecessors, (97), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-24 23:48:53,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-24 23:48:53,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:53,485 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:53,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:53,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash 671923723, now seen corresponding path program 1 times [2023-11-24 23:48:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633107408] [2023-11-24 23:48:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:53,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-24 23:48:54,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633107408] [2023-11-24 23:48:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633107408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:48:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:48:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321504716] [2023-11-24 23:48:54,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:54,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:48:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:48:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:48:54,732 INFO L87 Difference]: Start difference. First operand has 140 states, 80 states have (on average 1.2125) internal successors, (97), 81 states have internal predecessors, (97), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-24 23:48:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:55,227 INFO L93 Difference]: Finished difference Result 218 states and 281 transitions. [2023-11-24 23:48:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:48:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 106 [2023-11-24 23:48:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:55,257 INFO L225 Difference]: With dead ends: 218 [2023-11-24 23:48:55,257 INFO L226 Difference]: Without dead ends: 138 [2023-11-24 23:48:55,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:48:55,269 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 18 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:55,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 518 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:48:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-24 23:48:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-24 23:48:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 80 states have internal predecessors, (92), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-24 23:48:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2023-11-24 23:48:55,359 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 106 [2023-11-24 23:48:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:55,362 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2023-11-24 23:48:55,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-24 23:48:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2023-11-24 23:48:55,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-24 23:48:55,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:55,375 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:48:55,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:55,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1867697773, now seen corresponding path program 1 times [2023-11-24 23:48:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660795685] [2023-11-24 23:48:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-24 23:48:56,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:56,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660795685] [2023-11-24 23:48:56,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660795685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:56,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:48:56,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:48:56,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779900657] [2023-11-24 23:48:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:56,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:48:56,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:48:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:48:56,267 INFO L87 Difference]: Start difference. First operand 138 states and 173 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-24 23:48:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:56,921 INFO L93 Difference]: Finished difference Result 225 states and 284 transitions. [2023-11-24 23:48:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:48:56,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 127 [2023-11-24 23:48:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:56,926 INFO L225 Difference]: With dead ends: 225 [2023-11-24 23:48:56,926 INFO L226 Difference]: Without dead ends: 140 [2023-11-24 23:48:56,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:48:56,929 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 36 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:56,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 756 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:48:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-24 23:48:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-24 23:48:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 82 states have internal predecessors, (93), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2023-11-24 23:48:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2023-11-24 23:48:56,947 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 127 [2023-11-24 23:48:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:56,948 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2023-11-24 23:48:56,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-24 23:48:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2023-11-24 23:48:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-24 23:48:56,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:56,951 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:56,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:48:56,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:56,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash 649468266, now seen corresponding path program 1 times [2023-11-24 23:48:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130026252] [2023-11-24 23:48:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:57,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:48:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345540640] [2023-11-24 23:48:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:57,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:57,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:57,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:57,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:48:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:57,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:48:57,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 23:48:57,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:48:57,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130026252] [2023-11-24 23:48:57,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:48:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345540640] [2023-11-24 23:48:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345540640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:57,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:48:57,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:48:57,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537527592] [2023-11-24 23:48:57,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:57,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:48:57,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:48:57,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:48:57,983 INFO L87 Difference]: Start difference. First operand 140 states and 176 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-24 23:48:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:58,453 INFO L93 Difference]: Finished difference Result 219 states and 272 transitions. [2023-11-24 23:48:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:48:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 136 [2023-11-24 23:48:58,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:58,456 INFO L225 Difference]: With dead ends: 219 [2023-11-24 23:48:58,456 INFO L226 Difference]: Without dead ends: 140 [2023-11-24 23:48:58,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:48:58,463 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 24 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:58,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 636 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:48:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-24 23:48:58,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-24 23:48:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 82 states have internal predecessors, (92), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2023-11-24 23:48:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 175 transitions. [2023-11-24 23:48:58,492 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 175 transitions. Word has length 136 [2023-11-24 23:48:58,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:58,493 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 175 transitions. [2023-11-24 23:48:58,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-24 23:48:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 175 transitions. [2023-11-24 23:48:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-24 23:48:58,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:58,496 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:58,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:48:58,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:58,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:58,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:58,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1357284879, now seen corresponding path program 1 times [2023-11-24 23:48:58,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:58,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707374742] [2023-11-24 23:48:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:58,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:58,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:48:58,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582859618] [2023-11-24 23:48:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:58,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:58,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:48:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:59,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:48:59,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-24 23:48:59,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:48:59,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:59,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707374742] [2023-11-24 23:48:59,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:48:59,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582859618] [2023-11-24 23:48:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582859618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:59,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:48:59,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 23:48:59,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60448309] [2023-11-24 23:48:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:59,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:48:59,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:48:59,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:48:59,616 INFO L87 Difference]: Start difference. First operand 140 states and 175 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-24 23:49:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:00,412 INFO L93 Difference]: Finished difference Result 224 states and 278 transitions. [2023-11-24 23:49:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:49:00,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 144 [2023-11-24 23:49:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:00,415 INFO L225 Difference]: With dead ends: 224 [2023-11-24 23:49:00,415 INFO L226 Difference]: Without dead ends: 140 [2023-11-24 23:49:00,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:49:00,417 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 38 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:00,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 870 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:49:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-24 23:49:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-24 23:49:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 82 states have internal predecessors, (92), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 40 states have call predecessors, (41), 40 states have call successors, (41) [2023-11-24 23:49:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2023-11-24 23:49:00,440 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 144 [2023-11-24 23:49:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:00,441 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2023-11-24 23:49:00,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-24 23:49:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2023-11-24 23:49:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-24 23:49:00,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:00,445 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:00,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:00,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:00,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:00,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -766348214, now seen corresponding path program 1 times [2023-11-24 23:49:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:00,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111399980] [2023-11-24 23:49:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:00,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642792568] [2023-11-24 23:49:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:00,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:00,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:00,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1906c8a9-217b-4024-805c-bfdb21b4e72d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:49:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:01,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 154 conjunts are in the unsatisfiable core [2023-11-24 23:49:01,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:01,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-24 23:49:02,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-24 23:49:02,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-24 23:49:04,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-24 23:49:04,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-24 23:49:06,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:49:06,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:49:13,653 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-24 23:49:13,688 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-24 23:49:14,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:14,684 INFO L349 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-11-24 23:49:14,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 1 [2023-11-24 23:49:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 5 not checked. [2023-11-24 23:49:14,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:16,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111399980] [2023-11-24 23:49:16,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642792568] [2023-11-24 23:49:16,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642792568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652831794] [2023-11-24 23:49:16,741 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2023-11-24 23:49:16,741 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:16,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:16,752 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:16,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs