./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/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_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/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_d2535818-507c-46bf-b140-e110a367ca37/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 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:52,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:53,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:59:53,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:53,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:53,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:53,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:53,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:53,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:53,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:53,080 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:53,081 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:53,081 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:53,083 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:53,084 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:53,084 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:53,085 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:53,085 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:53,085 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:53,086 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:53,087 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:53,087 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:53,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:53,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:53,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:53,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:53,091 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:53,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:53,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:53,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:53,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:53,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:53,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:53,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:53,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:53,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:53,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:53,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:53,097 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:53,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:53,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:53,098 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:53,098 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:53,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:53,099 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_d2535818-507c-46bf-b140-e110a367ca37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 [2023-11-24 23:59:53,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:53,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:53,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:53,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:53,455 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:53,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2023-11-24 23:59:56,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:57,156 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:57,156 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2023-11-24 23:59:57,211 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/data/4c47234f2/a4c3d9d3b4054feab9975c8cb028d631/FLAGc9fe540c1 [2023-11-24 23:59:57,231 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/data/4c47234f2/a4c3d9d3b4054feab9975c8cb028d631 [2023-11-24 23:59:57,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:57,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:57,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:57,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:57,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:57,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:57" (1/1) ... [2023-11-24 23:59:57,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ff4173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:57, skipping insertion in model container [2023-11-24 23:59:57,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:57" (1/1) ... [2023-11-24 23:59:57,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:57,638 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_d2535818-507c-46bf-b140-e110a367ca37/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4493,4506] [2023-11-24 23:59:57,647 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_d2535818-507c-46bf-b140-e110a367ca37/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4553,4566] [2023-11-24 23:59:58,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,720 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,754 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,755 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:58,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,135 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:59:59,136 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:59:59,138 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:59:59,139 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:59:59,141 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:59:59,142 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:59:59,143 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:59:59,144 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:59:59,144 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:59:59,145 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:59:59,317 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,326 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:59,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:59,475 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_d2535818-507c-46bf-b140-e110a367ca37/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4493,4506] [2023-11-24 23:59:59,478 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4553,4566] [2023-11-24 23:59:59,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,676 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:59:59,677 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:59:59,679 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:59:59,680 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:59:59,681 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:59:59,683 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:59:59,684 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:59:59,685 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:59:59,685 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:59:59,686 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:59:59,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:59:59,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7737-7748] [2023-11-24 23:59:59,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:00:00,049 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,049 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,049 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,049 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,049 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,050 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,051 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,051 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,051 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,051 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,051 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,052 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,052 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,052 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,052 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:00,060 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:00:00,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00 WrapperNode [2023-11-25 00:00:00,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:00:00,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:00:00,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:00:00,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:00:00,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,298 INFO L138 Inliner]: procedures = 690, calls = 1684, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 657 [2023-11-25 00:00:00,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:00:00,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:00:00,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:00:00,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:00:00,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:00:00,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:00:00,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:00:00,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:00:00,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (1/1) ... [2023-11-25 00:00:00,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:00:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:00,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:00:00,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:00:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:00:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-25 00:00:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-25 00:00:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-25 00:00:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-25 00:00:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:00:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:00:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:00:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:00:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:00:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:00:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:00:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:00:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:00:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:00:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-25 00:00:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-25 00:00:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:00:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:00:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:00:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:00:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-25 00:00:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-25 00:00:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-25 00:00:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-25 00:00:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:00:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:00:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-25 00:00:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-25 00:00:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-25 00:00:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-25 00:00:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:00:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:00:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-25 00:00:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-25 00:00:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:00:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:00:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:00:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:00:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:00:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:00:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:00:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:00:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:00:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:00:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:00:00,956 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:00:00,959 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:00:02,125 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:00:02,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:00:02,358 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:00:02,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:02 BoogieIcfgContainer [2023-11-25 00:00:02,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:00:02,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:00:02,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:00:02,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:00:02,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:57" (1/3) ... [2023-11-25 00:00:02,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2c8fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:00:02, skipping insertion in model container [2023-11-25 00:00:02,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:00" (2/3) ... [2023-11-25 00:00:02,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2c8fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:00:02, skipping insertion in model container [2023-11-25 00:00:02,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:02" (3/3) ... [2023-11-25 00:00:02,375 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness_negated.i [2023-11-25 00:00:02,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:00:02,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:00:02,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:00:02,497 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;@7abe7828, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:00:02,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:00:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 82 states have internal predecessors, (95), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-25 00:00:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-25 00:00:02,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:02,531 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:02,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:02,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2060268781, now seen corresponding path program 1 times [2023-11-25 00:00:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556497531] [2023-11-25 00:00:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-25 00:00:03,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556497531] [2023-11-25 00:00:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556497531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203594270] [2023-11-25 00:00:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:03,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:03,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:03,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:00:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:04,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:00:04,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-25 00:00:04,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:04,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203594270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:04,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:00:04,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-25 00:00:04,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851953094] [2023-11-25 00:00:04,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:04,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:00:04,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:00:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:00:04,764 INFO L87 Difference]: Start difference. First operand has 155 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 82 states have internal predecessors, (95), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-25 00:00:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:05,319 INFO L93 Difference]: Finished difference Result 287 states and 401 transitions. [2023-11-25 00:00:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:00:05,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 99 [2023-11-25 00:00:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:05,334 INFO L225 Difference]: With dead ends: 287 [2023-11-25 00:00:05,335 INFO L226 Difference]: Without dead ends: 151 [2023-11-25 00:00:05,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:00:05,344 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 41 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:05,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 590 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:00:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-25 00:00:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-25 00:00:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 80 states have internal predecessors, (88), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2023-11-25 00:00:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 201 transitions. [2023-11-25 00:00:05,447 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 201 transitions. Word has length 99 [2023-11-25 00:00:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:05,447 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 201 transitions. [2023-11-25 00:00:05,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-25 00:00:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 201 transitions. [2023-11-25 00:00:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-25 00:00:05,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:05,456 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:05,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:05,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:05,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash 97632969, now seen corresponding path program 1 times [2023-11-25 00:00:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400540132] [2023-11-25 00:00:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:05,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:00:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514233754] [2023-11-25 00:00:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:05,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:05,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:05,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:05,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:00:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:06,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:00:06,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-25 00:00:06,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:06,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400540132] [2023-11-25 00:00:06,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:00:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514233754] [2023-11-25 00:00:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514233754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:06,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:06,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:00:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320291063] [2023-11-25 00:00:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:00:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:00:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:00:06,662 INFO L87 Difference]: Start difference. First operand 151 states and 201 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-25 00:00:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:07,133 INFO L93 Difference]: Finished difference Result 242 states and 322 transitions. [2023-11-25 00:00:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:00:07,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 117 [2023-11-25 00:00:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:07,138 INFO L225 Difference]: With dead ends: 242 [2023-11-25 00:00:07,138 INFO L226 Difference]: Without dead ends: 151 [2023-11-25 00:00:07,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:00:07,141 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 40 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:07,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 698 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:00:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-25 00:00:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-25 00:00:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 80 states have internal predecessors, (88), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2023-11-25 00:00:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2023-11-25 00:00:07,162 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 117 [2023-11-25 00:00:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:07,162 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2023-11-25 00:00:07,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-25 00:00:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2023-11-25 00:00:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-25 00:00:07,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:07,166 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 3, 3, 3, 3, 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] [2023-11-25 00:00:07,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:07,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:07,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:07,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:07,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2067758194, now seen corresponding path program 2 times [2023-11-25 00:00:07,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:07,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372747722] [2023-11-25 00:00:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:07,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:07,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:00:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68348082] [2023-11-25 00:00:07,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:00:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:07,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:07,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:00:08,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-25 00:00:08,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:00:08,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:00:08,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-25 00:00:08,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:08,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372747722] [2023-11-25 00:00:08,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:00:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68348082] [2023-11-25 00:00:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68348082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:08,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:08,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:00:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412546740] [2023-11-25 00:00:08,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:00:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:00:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:00:08,088 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-25 00:00:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:08,646 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2023-11-25 00:00:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:00:08,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 126 [2023-11-25 00:00:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:08,650 INFO L225 Difference]: With dead ends: 159 [2023-11-25 00:00:08,650 INFO L226 Difference]: Without dead ends: 157 [2023-11-25 00:00:08,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:00:08,652 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 5 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:08,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 848 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:00:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-25 00:00:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2023-11-25 00:00:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.123456790123457) internal successors, (91), 83 states have internal predecessors, (91), 56 states have call successors, (56), 18 states have call predecessors, (56), 18 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2023-11-25 00:00:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2023-11-25 00:00:08,672 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 126 [2023-11-25 00:00:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:08,673 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2023-11-25 00:00:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-25 00:00:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2023-11-25 00:00:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-25 00:00:08,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:08,677 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:08,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:08,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:08,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2078120617, now seen corresponding path program 3 times [2023-11-25 00:00:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781474382] [2023-11-25 00:00:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:08,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:09,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:00:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891174992] [2023-11-25 00:00:09,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:00:09,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:09,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:09,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:09,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:00:09,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:00:09,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:00:09,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:00:09,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-25 00:00:09,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:09,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781474382] [2023-11-25 00:00:09,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:00:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891174992] [2023-11-25 00:00:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891174992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-25 00:00:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531838027] [2023-11-25 00:00:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:09,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:00:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:00:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:00:09,912 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-25 00:00:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:10,596 INFO L93 Difference]: Finished difference Result 242 states and 316 transitions. [2023-11-25 00:00:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:00:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 135 [2023-11-25 00:00:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:10,600 INFO L225 Difference]: With dead ends: 242 [2023-11-25 00:00:10,600 INFO L226 Difference]: Without dead ends: 149 [2023-11-25 00:00:10,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:00:10,603 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 44 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:10,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 985 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:00:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-25 00:00:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-25 00:00:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-25 00:00:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 194 transitions. [2023-11-25 00:00:10,622 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 194 transitions. Word has length 135 [2023-11-25 00:00:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:10,623 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 194 transitions. [2023-11-25 00:00:10,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-25 00:00:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2023-11-25 00:00:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-25 00:00:10,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:10,626 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:10,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:10,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:10,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:10,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash -852703034, now seen corresponding path program 1 times [2023-11-25 00:00:10,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:10,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279142185] [2023-11-25 00:00:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:10,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:10,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:00:10,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573132932] [2023-11-25 00:00:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:10,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:10,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:10,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:10,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2535818-507c-46bf-b140-e110a367ca37/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:00:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:11,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-25 00:00:11,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 118 proven. 14 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-25 00:00:12,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-25 00:00:12,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279142185] [2023-11-25 00:00:12,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:00:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573132932] [2023-11-25 00:00:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573132932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:00:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566171783] [2023-11-25 00:00:12,785 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-11-25 00:00:12,785 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:00:12,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:00:12,794 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:00:12,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs