./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:00:11,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:00:11,469 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:00:11,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:00:11,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:00:11,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:00:11,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:00:11,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:00:11,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:00:11,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:00:11,511 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:00:11,512 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:00:11,512 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:00:11,513 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:00:11,513 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:00:11,514 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:00:11,514 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:00:11,515 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:00:11,516 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:00:11,516 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:00:11,517 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:00:11,518 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:00:11,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:00:11,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:00:11,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:00:11,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:00:11,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:00:11,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:00:11,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:00:11,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:00:11,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:00:11,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:00:11,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:00:11,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:00:11,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:00:11,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:00:11,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:00:11,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:00:11,532 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:00:11,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:00:11,532 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:00:11,533 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:00:11,533 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:00:11,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:00:11,534 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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2023-11-25 00:00:11,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:00:11,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:00:11,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:00:11,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:00:11,892 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:00:11,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2023-11-25 00:00:14,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:00:15,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:00:15,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2023-11-25 00:00:15,703 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/data/c23449fe7/74fdcc0d589345578bec07572950f635/FLAG2a7ca52cb [2023-11-25 00:00:15,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/data/c23449fe7/74fdcc0d589345578bec07572950f635 [2023-11-25 00:00:15,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:00:15,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:00:15,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:00:15,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:00:15,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:00:15,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:00:15" (1/1) ... [2023-11-25 00:00:15,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c014e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:15, skipping insertion in model container [2023-11-25 00:00:15,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:00:15" (1/1) ... [2023-11-25 00:00:15,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:00:16,226 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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2023-11-25 00:00:16,235 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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2023-11-25 00:00:17,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,515 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,540 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,541 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:17,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,131 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:00:18,133 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:00:18,135 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:00:18,139 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:00:18,144 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:00:18,147 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:00:18,148 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:00:18,150 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:00:18,152 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:00:18,154 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:00:18,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:00:18,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:00:18,667 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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2023-11-25 00:00:18,668 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_b23e88f5-ec9e-432d-9d6a-69ed1619d028/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2023-11-25 00:00:18,733 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,735 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,736 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,737 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,738 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,758 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,815 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:00:18,817 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:00:18,818 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:00:18,819 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:00:18,820 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:00:18,821 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:00:18,821 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:00:18,822 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:00:18,822 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:00:18,823 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:00:18,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-25 00:00:18,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:00:18,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-25 00:00:19,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:00:19,339 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,339 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,340 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,340 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,340 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,340 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,340 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,341 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,342 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,342 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,342 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:19,350 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:00:19,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19 WrapperNode [2023-11-25 00:00:19,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:00:19,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:00:19,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:00:19,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:00:19,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,605 INFO L138 Inliner]: procedures = 689, calls = 2743, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2023-11-25 00:00:19,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:00:19,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:00:19,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:00:19,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:00:19,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:00:19,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:00:19,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:00:19,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:00:19,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (1/1) ... [2023-11-25 00:00:19,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:00:19,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:19,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:00:19,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:00:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-25 00:00:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-25 00:00:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:00:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:00:19,878 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:00:19,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-25 00:00:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-25 00:00:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-25 00:00:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:00:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:00:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:00:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-25 00:00:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-25 00:00:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:00:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:00:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:00:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:00:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:00:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:00:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:00:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:00:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:00:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:00:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:00:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:00:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:00:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-25 00:00:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-25 00:00:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:00:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:00:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-25 00:00:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-25 00:00:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:00:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-25 00:00:19,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-25 00:00:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:00:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:00:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2023-11-25 00:00:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2023-11-25 00:00:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:00:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:00:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-25 00:00:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-25 00:00:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:00:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:00:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:00:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-25 00:00:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2023-11-25 00:00:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2023-11-25 00:00:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:00:20,261 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:00:20,265 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:00:20,510 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-25 00:00:21,772 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:00:22,014 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:00:22,015 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:00:22,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:22 BoogieIcfgContainer [2023-11-25 00:00:22,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:00:22,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:00:22,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:00:22,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:00:22,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:00:15" (1/3) ... [2023-11-25 00:00:22,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1408b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:00:22, skipping insertion in model container [2023-11-25 00:00:22,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:19" (2/3) ... [2023-11-25 00:00:22,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1408b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:00:22, skipping insertion in model container [2023-11-25 00:00:22,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:22" (3/3) ... [2023-11-25 00:00:22,030 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2023-11-25 00:00:22,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:00:22,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:00:22,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:00:22,138 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;@3af08cce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:00:22,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:00:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-25 00:00:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-25 00:00:22,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:22,157 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-25 00:00:22,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:22,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:22,167 INFO L85 PathProgramCache]: Analyzing trace with hash 897214458, now seen corresponding path program 1 times [2023-11-25 00:00:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046021909] [2023-11-25 00:00:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:22,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-25 00:00:24,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:24,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046021909] [2023-11-25 00:00:24,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046021909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:24,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:24,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:00:24,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559081449] [2023-11-25 00:00:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:24,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:00:24,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:00:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:00:24,261 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-25 00:00:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:24,635 INFO L93 Difference]: Finished difference Result 196 states and 275 transitions. [2023-11-25 00:00:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:00:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2023-11-25 00:00:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:24,649 INFO L225 Difference]: With dead ends: 196 [2023-11-25 00:00:24,649 INFO L226 Difference]: Without dead ends: 152 [2023-11-25 00:00:24,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:00:24,656 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 17 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:24,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 778 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:00:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-25 00:00:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2023-11-25 00:00:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2023-11-25 00:00:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2023-11-25 00:00:24,715 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2023-11-25 00:00:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:24,717 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2023-11-25 00:00:24,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-25 00:00:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2023-11-25 00:00:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-25 00:00:24,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:24,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-25 00:00:24,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:00:24,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:24,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash -468164582, now seen corresponding path program 1 times [2023-11-25 00:00:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393998981] [2023-11-25 00:00:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:24,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-25 00:00:25,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:25,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393998981] [2023-11-25 00:00:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393998981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:25,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:25,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-25 00:00:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826956] [2023-11-25 00:00:25,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:25,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:00:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:00:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:00:25,678 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-25 00:00:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:26,297 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2023-11-25 00:00:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:00:26,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 64 [2023-11-25 00:00:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:26,304 INFO L225 Difference]: With dead ends: 186 [2023-11-25 00:00:26,304 INFO L226 Difference]: Without dead ends: 150 [2023-11-25 00:00:26,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:00:26,310 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 157 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:26,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1031 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:00:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-25 00:00:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2023-11-25 00:00:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 41 states have call successors, (41), 16 states have call predecessors, (41), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-25 00:00:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2023-11-25 00:00:26,357 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 64 [2023-11-25 00:00:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:26,359 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-11-25 00:00:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-25 00:00:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2023-11-25 00:00:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-25 00:00:26,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:26,367 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-25 00:00:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:00:26,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:26,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1369890207, now seen corresponding path program 1 times [2023-11-25 00:00:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350768493] [2023-11-25 00:00:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-25 00:00:26,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350768493] [2023-11-25 00:00:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350768493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:00:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080965383] [2023-11-25 00:00:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:26,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:00:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:00:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:26,878 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-25 00:00:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:27,039 INFO L93 Difference]: Finished difference Result 168 states and 212 transitions. [2023-11-25 00:00:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:00:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 64 [2023-11-25 00:00:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:27,043 INFO L225 Difference]: With dead ends: 168 [2023-11-25 00:00:27,043 INFO L226 Difference]: Without dead ends: 130 [2023-11-25 00:00:27,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:00:27,045 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:27,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 552 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:00:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-25 00:00:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-25 00:00:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-25 00:00:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2023-11-25 00:00:27,063 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 64 [2023-11-25 00:00:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:27,063 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2023-11-25 00:00:27,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-25 00:00:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2023-11-25 00:00:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-25 00:00:27,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:27,066 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-25 00:00:27,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:00:27,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:27,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1449746323, now seen corresponding path program 1 times [2023-11-25 00:00:27,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:27,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78780286] [2023-11-25 00:00:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-25 00:00:27,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:27,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78780286] [2023-11-25 00:00:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78780286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:27,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:27,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-25 00:00:27,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528136083] [2023-11-25 00:00:27,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:27,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:00:27,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:00:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:00:27,894 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:00:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:28,149 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2023-11-25 00:00:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:00:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2023-11-25 00:00:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:28,154 INFO L225 Difference]: With dead ends: 170 [2023-11-25 00:00:28,156 INFO L226 Difference]: Without dead ends: 138 [2023-11-25 00:00:28,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:00:28,158 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:28,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 827 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:00:28,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-25 00:00:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2023-11-25 00:00:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2023-11-25 00:00:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2023-11-25 00:00:28,182 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2023-11-25 00:00:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:28,185 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2023-11-25 00:00:28,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:00:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2023-11-25 00:00:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-25 00:00:28,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:28,189 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:28,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:00:28,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:00:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash -710025197, now seen corresponding path program 1 times [2023-11-25 00:00:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:28,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590770222] [2023-11-25 00:00:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-25 00:00:32,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590770222] [2023-11-25 00:00:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590770222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979244072] [2023-11-25 00:00:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:32,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:32,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:32,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:32,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23e88f5-ec9e-432d-9d6a-69ed1619d028/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:00:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:32,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 100 conjunts are in the unsatisfiable core [2023-11-25 00:00:32,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:32,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-25 00:00:37,508 INFO L349 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2023-11-25 00:00:37,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 184 treesize of output 168 [2023-11-25 00:00:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-25 00:00:37,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:51,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979244072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:00:51,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2069313039] [2023-11-25 00:00:51,949 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-11-25 00:00:51,949 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:00:51,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:00:51,961 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:00:51,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs