./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:41:55,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:41:55,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:41:55,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:41:55,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:41:55,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:41:55,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:41:55,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:41:55,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:41:55,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:41:55,296 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:41:55,297 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:41:55,297 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:41:55,298 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:41:55,299 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:41:55,299 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:41:55,300 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:41:55,301 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:41:55,301 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:41:55,302 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:41:55,302 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:41:55,303 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:41:55,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:41:55,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:41:55,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:41:55,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:41:55,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:41:55,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:41:55,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:41:55,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:41:55,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:41:55,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:41:55,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:41:55,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:41:55,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:41:55,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:41:55,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:41:55,312 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:41:55,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:41:55,313 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:41:55,313 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:41:55,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:41:55,314 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_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2023-11-12 00:41:55,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:41:55,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:41:55,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:41:55,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:41:55,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:41:55,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2023-11-12 00:41:58,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:41:59,391 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:41:59,394 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2023-11-12 00:41:59,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/data/e89a8cf46/1dee23bb6d814abd847886a6a0cfafdb/FLAG4bcd32070 [2023-11-12 00:41:59,455 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/data/e89a8cf46/1dee23bb6d814abd847886a6a0cfafdb [2023-11-12 00:41:59,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:41:59,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:41:59,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:41:59,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:41:59,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:41:59,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:41:59" (1/1) ... [2023-11-12 00:41:59,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ed1954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:41:59, skipping insertion in model container [2023-11-12 00:41:59,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:41:59" (1/1) ... [2023-11-12 00:41:59,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:41:59,861 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_20f832a4-7549-4983-ac9e-b1feb148c6fe/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2023-11-12 00:41:59,870 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_20f832a4-7549-4983-ac9e-b1feb148c6fe/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2023-11-12 00:42:00,949 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,953 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,955 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,956 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,961 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,976 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,983 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,987 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,989 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,994 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:00,996 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:01,000 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:01,000 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:01,523 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:42:01,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:42:01,526 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:42:01,528 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:42:01,530 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:42:01,530 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:42:01,531 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:42:01,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:42:01,545 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:42:01,545 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:42:01,761 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:01,769 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:01,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:01,873 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:42:01,903 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_20f832a4-7549-4983-ac9e-b1feb148c6fe/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2023-11-12 00:42:01,904 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_20f832a4-7549-4983-ac9e-b1feb148c6fe/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2023-11-12 00:42:02,017 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,018 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,018 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,056 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,057 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,063 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,064 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,065 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,066 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,073 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,073 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,074 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,074 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,149 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:42:02,150 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:42:02,151 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:42:02,155 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:42:02,160 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:42:02,163 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:42:02,164 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:42:02,167 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:42:02,167 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:42:02,168 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:42:02,226 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,233 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:42:02,247 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7770-7781] [2023-11-12 00:42:02,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:02,557 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,557 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,557 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,557 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,558 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,558 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,558 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,558 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,558 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,559 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,559 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,559 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,559 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,559 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,559 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:02,568 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:42:02,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02 WrapperNode [2023-11-12 00:42:02,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:02,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:02,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:42:02,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:42:02,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:02,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:02,856 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 898 [2023-11-12 00:42:02,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:02,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:42:02,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:42:02,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:42:02,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:02,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:02,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:02,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:02,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:03,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:03,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:03,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:03,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:42:03,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:42:03,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:42:03,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:42:03,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (1/1) ... [2023-11-12 00:42:03,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:03,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:42:03,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:42:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:42:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 00:42:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 00:42:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 00:42:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 00:42:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:42:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:42:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 00:42:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 00:42:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:42:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:42:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:42:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:42:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:42:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:42:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:42:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:42:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 00:42:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 00:42:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:42:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:42:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:42:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:42:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-12 00:42:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-12 00:42:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:42:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:42:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 00:42:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 00:42:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-12 00:42:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-12 00:42:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-12 00:42:03,165 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-12 00:42:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:42:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:42:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 00:42:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 00:42:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-12 00:42:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-12 00:42:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:42:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-12 00:42:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-12 00:42:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:42:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:42:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:42:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:42:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:42:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:42:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-12 00:42:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-12 00:42:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:42:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:42:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:42:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:42:03,575 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:42:03,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:42:05,122 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:42:05,519 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:42:05,519 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:42:05,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:05 BoogieIcfgContainer [2023-11-12 00:42:05,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:42:05,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:42:05,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:42:05,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:42:05,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:41:59" (1/3) ... [2023-11-12 00:42:05,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319b9f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:05, skipping insertion in model container [2023-11-12 00:42:05,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:02" (2/3) ... [2023-11-12 00:42:05,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319b9f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:05, skipping insertion in model container [2023-11-12 00:42:05,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:05" (3/3) ... [2023-11-12 00:42:05,537 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2023-11-12 00:42:05,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:42:05,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:42:05,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:42:05,626 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;@7c36f511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:42:05,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:42:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 132 states have (on average 1.196969696969697) internal successors, (158), 133 states have internal predecessors, (158), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-12 00:42:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-12 00:42:05,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:05,648 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-12 00:42:05,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:05,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash -748915046, now seen corresponding path program 1 times [2023-11-12 00:42:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201655784] [2023-11-12 00:42:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-12 00:42:06,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:06,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201655784] [2023-11-12 00:42:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201655784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:42:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209317700] [2023-11-12 00:42:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:06,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:06,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:06,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:42:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:07,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:42:07,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-12 00:42:07,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:42:07,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209317700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:07,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:42:07,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-12 00:42:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841960409] [2023-11-12 00:42:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:42:07,871 INFO L87 Difference]: Start difference. First operand has 256 states, 132 states have (on average 1.196969696969697) internal successors, (158), 133 states have internal predecessors, (158), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2023-11-12 00:42:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:08,454 INFO L93 Difference]: Finished difference Result 491 states and 736 transitions. [2023-11-12 00:42:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:08,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 [2023-11-12 00:42:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:08,471 INFO L225 Difference]: With dead ends: 491 [2023-11-12 00:42:08,471 INFO L226 Difference]: Without dead ends: 256 [2023-11-12 00:42:08,478 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 [2023-11-12 00:42:08,481 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 89 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:08,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1032 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:42:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-12 00:42:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-12 00:42:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2023-11-12 00:42:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 377 transitions. [2023-11-12 00:42:08,569 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 377 transitions. Word has length 99 [2023-11-12 00:42:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:08,570 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 377 transitions. [2023-11-12 00:42:08,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2023-11-12 00:42:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 377 transitions. [2023-11-12 00:42:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-12 00:42:08,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:08,577 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-12 00:42:08,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:42:08,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:42:08,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:08,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1605921742, now seen corresponding path program 1 times [2023-11-12 00:42:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087511139] [2023-11-12 00:42:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:08,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:42:08,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959984299] [2023-11-12 00:42:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:08,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:08,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:08,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:08,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:42:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:09,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:42:09,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-12 00:42:09,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:42:09,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087511139] [2023-11-12 00:42:09,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:42:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959984299] [2023-11-12 00:42:09,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959984299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:09,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:09,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:42:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873756864] [2023-11-12 00:42:09,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:42:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:42:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:42:09,725 INFO L87 Difference]: Start difference. First operand 256 states and 377 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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) [2023-11-12 00:42:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:10,575 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2023-11-12 00:42:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:42:10,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 [2023-11-12 00:42:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:10,591 INFO L225 Difference]: With dead ends: 471 [2023-11-12 00:42:10,591 INFO L226 Difference]: Without dead ends: 256 [2023-11-12 00:42:10,592 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 [2023-11-12 00:42:10,597 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 141 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:10,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1238 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:42:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-12 00:42:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-12 00:42:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2023-11-12 00:42:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 374 transitions. [2023-11-12 00:42:10,658 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 374 transitions. Word has length 117 [2023-11-12 00:42:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 374 transitions. [2023-11-12 00:42:10,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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) [2023-11-12 00:42:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 374 transitions. [2023-11-12 00:42:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 00:42:10,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:10,677 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-12 00:42:10,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:42:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:10,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:10,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1121407713, now seen corresponding path program 2 times [2023-11-12 00:42:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:10,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887636308] [2023-11-12 00:42:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:11,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:42:11,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19383794] [2023-11-12 00:42:11,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:42:11,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:11,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:11,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:11,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:42:11,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:42:11,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:42:11,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:42:11,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-12 00:42:12,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:42:12,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887636308] [2023-11-12 00:42:12,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:42:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19383794] [2023-11-12 00:42:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19383794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:42:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887181872] [2023-11-12 00:42:12,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:12,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:42:12,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:12,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:42:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:12,010 INFO L87 Difference]: Start difference. First operand 256 states and 374 transitions. Second operand has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-12 00:42:12,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:12,566 INFO L93 Difference]: Finished difference Result 467 states and 684 transitions. [2023-11-12 00:42:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:42:12,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 126 [2023-11-12 00:42:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:12,573 INFO L225 Difference]: With dead ends: 467 [2023-11-12 00:42:12,573 INFO L226 Difference]: Without dead ends: 256 [2023-11-12 00:42:12,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:42:12,614 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 0 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:12,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1193 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:42:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-12 00:42:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-12 00:42:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (115), 100 states have call predecessors, (115), 100 states have call successors, (115) [2023-11-12 00:42:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 373 transitions. [2023-11-12 00:42:12,662 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 373 transitions. Word has length 126 [2023-11-12 00:42:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:12,665 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 373 transitions. [2023-11-12 00:42:12,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-12 00:42:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 373 transitions. [2023-11-12 00:42:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 00:42:12,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:12,669 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-12 00:42:12,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:42:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:12,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:12,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 134184218, now seen corresponding path program 3 times [2023-11-12 00:42:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115501657] [2023-11-12 00:42:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:12,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:42:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400962088] [2023-11-12 00:42:12,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:42:12,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:12,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:13,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:42:13,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:42:13,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:42:13,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:42:13,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-12 00:42:13,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:42:13,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115501657] [2023-11-12 00:42:13,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:42:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400962088] [2023-11-12 00:42:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400962088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:42:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:42:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:42:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043774378] [2023-11-12 00:42:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:42:13,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:42:13,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:42:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:42:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:42:13,859 INFO L87 Difference]: Start difference. First operand 256 states and 373 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 00:42:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:42:14,774 INFO L93 Difference]: Finished difference Result 476 states and 694 transitions. [2023-11-12 00:42:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:42:14,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 135 [2023-11-12 00:42:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:42:14,778 INFO L225 Difference]: With dead ends: 476 [2023-11-12 00:42:14,779 INFO L226 Difference]: Without dead ends: 266 [2023-11-12 00:42:14,780 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 [2023-11-12 00:42:14,781 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 144 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:42:14,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1823 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:42:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-12 00:42:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-12 00:42:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (120), 105 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-12 00:42:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 387 transitions. [2023-11-12 00:42:14,804 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 387 transitions. Word has length 135 [2023-11-12 00:42:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:42:14,805 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 387 transitions. [2023-11-12 00:42:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 00:42:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 387 transitions. [2023-11-12 00:42:14,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 00:42:14,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:42:14,808 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-12 00:42:14,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:42:15,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:15,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:42:15,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:42:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 667242439, now seen corresponding path program 1 times [2023-11-12 00:42:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:42:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308190191] [2023-11-12 00:42:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:42:15,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:42:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164697619] [2023-11-12 00:42:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:42:15,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:42:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:15,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:42:15,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f832a4-7549-4983-ac9e-b1feb148c6fe/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:42:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:42:15,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-12 00:42:15,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:42:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 28 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-12 00:42:16,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:42:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-12 00:42:17,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:42:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308190191] [2023-11-12 00:42:17,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:42:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164697619] [2023-11-12 00:42:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164697619] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:42:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [801219641] [2023-11-12 00:42:17,173 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-11-12 00:42:17,173 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:42:17,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:42:17,182 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:42:17,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs