./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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/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_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh --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 [2023-12-02 19:29:35,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:29:35,671 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:29:35,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:29:35,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:29:35,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:29:35,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:29:35,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:29:35,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:29:35,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:29:35,704 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:29:35,705 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:29:35,705 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:29:35,706 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:29:35,706 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:29:35,707 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:29:35,707 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:29:35,708 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:29:35,708 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:29:35,709 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:29:35,709 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:29:35,712 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:29:35,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:29:35,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:29:35,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:29:35,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:29:35,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:29:35,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:29:35,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:29:35,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:29:35,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:29:35,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:29:35,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:29:35,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:29:35,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:29:35,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:29:35,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:29:35,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:29:35,718 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:29:35,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:29:35,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:29:35,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:29:35,719 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:29:35,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:29:35,720 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_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2023-12-02 19:29:35,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:29:35,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:29:35,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:29:35,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:29:35,981 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:29:35,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2023-12-02 19:29:38,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:29:39,169 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:29:39,169 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2023-12-02 19:29:39,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/data/0a80db54d/7f676f6a69dc4697b7eb95fb33a36f8f/FLAG1ac40247c [2023-12-02 19:29:39,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/data/0a80db54d/7f676f6a69dc4697b7eb95fb33a36f8f [2023-12-02 19:29:39,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:29:39,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:29:39,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:29:39,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:29:39,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:29:39,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:39" (1/1) ... [2023-12-02 19:29:39,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7ec1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:39, skipping insertion in model container [2023-12-02 19:29:39,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:39" (1/1) ... [2023-12-02 19:29:39,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:29:39,585 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_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2023-12-02 19:29:39,595 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_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2023-12-02 19:29:40,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,770 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,771 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:40,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,258 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 19:29:41,259 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 19:29:41,260 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 19:29:41,261 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 19:29:41,263 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 19:29:41,264 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 19:29:41,264 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 19:29:41,265 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 19:29:41,266 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 19:29:41,266 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 19:29:41,553 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,553 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:29:41,670 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:29:41,683 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_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2023-12-02 19:29:41,684 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_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2023-12-02 19:29:41,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,720 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,720 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,757 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 19:29:41,758 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 19:29:41,759 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 19:29:41,760 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 19:29:41,761 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 19:29:41,761 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 19:29:41,762 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 19:29:41,763 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 19:29:41,763 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 19:29:41,764 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 19:29:41,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-12-02 19:29:41,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,831 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 19:29:41,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-12-02 19:29:41,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:29:42,052 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,053 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,053 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,053 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,053 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,054 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,054 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,054 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,054 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,054 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,055 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,055 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,055 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,055 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,055 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,055 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,056 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,056 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:29:42,062 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:29:42,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42 WrapperNode [2023-12-02 19:29:42,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:29:42,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:29:42,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:29:42,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:29:42,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,226 INFO L138 Inliner]: procedures = 689, calls = 2743, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2023-12-02 19:29:42,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:29:42,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:29:42,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:29:42,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:29:42,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:29:42,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:29:42,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:29:42,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:29:42,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (1/1) ... [2023-12-02 19:29:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:29:42,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:42,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:29:42,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:29:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-12-02 19:29:42,395 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-12-02 19:29:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:29:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 19:29:42,396 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 19:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-12-02 19:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-12-02 19:29:42,396 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-12-02 19:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:29:42,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:29:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 19:29:42,397 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 19:29:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 19:29:42,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 19:29:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:29:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:29:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:29:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:29:42,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:29:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 19:29:42,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 19:29:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:29:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:29:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 19:29:42,398 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 19:29:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:29:42,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:29:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-12-02 19:29:42,399 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-12-02 19:29:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:29:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-12-02 19:29:42,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-12-02 19:29:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:29:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:29:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2023-12-02 19:29:42,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2023-12-02 19:29:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 19:29:42,400 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 19:29:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-12-02 19:29:42,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-12-02 19:29:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 19:29:42,400 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 19:29:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:29:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-12-02 19:29:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2023-12-02 19:29:42,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2023-12-02 19:29:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:29:42,644 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:29:42,646 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:29:42,812 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-12-02 19:29:43,791 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:29:43,981 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:29:43,981 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:29:43,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:43 BoogieIcfgContainer [2023-12-02 19:29:43,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:29:43,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:29:43,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:29:43,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:29:43,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:29:39" (1/3) ... [2023-12-02 19:29:43,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa93ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:43, skipping insertion in model container [2023-12-02 19:29:43,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:42" (2/3) ... [2023-12-02 19:29:43,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa93ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:43, skipping insertion in model container [2023-12-02 19:29:43,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:43" (3/3) ... [2023-12-02 19:29:43,991 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2023-12-02 19:29:44,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:29:44,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:29:44,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:29:44,059 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;@4cace42d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:29:44,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:29:44,063 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) [2023-12-02 19:29:44,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 19:29:44,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:44,075 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] [2023-12-02 19:29:44,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:44,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash 897214458, now seen corresponding path program 1 times [2023-12-02 19:29:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664749179] [2023-12-02 19:29:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:29:45,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664749179] [2023-12-02 19:29:45,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664749179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:45,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:45,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:29:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305002419] [2023-12-02 19:29:45,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:45,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:29:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:29:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:29:45,636 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) [2023-12-02 19:29:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:45,968 INFO L93 Difference]: Finished difference Result 196 states and 275 transitions. [2023-12-02 19:29:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:29:45,970 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 [2023-12-02 19:29:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:45,981 INFO L225 Difference]: With dead ends: 196 [2023-12-02 19:29:45,982 INFO L226 Difference]: Without dead ends: 152 [2023-12-02 19:29:45,985 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 [2023-12-02 19:29:45,988 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 17 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:45,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 778 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:29:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-02 19:29:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2023-12-02 19:29:46,043 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) [2023-12-02 19:29:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2023-12-02 19:29:46,048 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2023-12-02 19:29:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:46,049 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2023-12-02 19:29:46,049 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) [2023-12-02 19:29:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2023-12-02 19:29:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 19:29:46,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:46,054 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] [2023-12-02 19:29:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:29:46,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:46,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash -468164582, now seen corresponding path program 1 times [2023-12-02 19:29:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:46,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116602642] [2023-12-02 19:29:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:29:46,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116602642] [2023-12-02 19:29:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116602642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:46,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:29:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745336575] [2023-12-02 19:29:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:46,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:29:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:29:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:29:46,714 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) [2023-12-02 19:29:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:47,253 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2023-12-02 19:29:47,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:29:47,254 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 [2023-12-02 19:29:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:47,257 INFO L225 Difference]: With dead ends: 186 [2023-12-02 19:29:47,257 INFO L226 Difference]: Without dead ends: 150 [2023-12-02 19:29:47,258 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 [2023-12-02 19:29:47,259 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 157 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:47,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1031 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:29:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-02 19:29:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2023-12-02 19:29:47,278 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) [2023-12-02 19:29:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2023-12-02 19:29:47,281 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 64 [2023-12-02 19:29:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:47,281 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-12-02 19:29:47,282 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) [2023-12-02 19:29:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2023-12-02 19:29:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 19:29:47,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:47,284 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] [2023-12-02 19:29:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:29:47,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1369890207, now seen corresponding path program 1 times [2023-12-02 19:29:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000500014] [2023-12-02 19:29:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:29:47,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000500014] [2023-12-02 19:29:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000500014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:47,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:47,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:29:47,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710967535] [2023-12-02 19:29:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:47,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:29:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:47,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:29:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:29:47,613 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) [2023-12-02 19:29:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:47,745 INFO L93 Difference]: Finished difference Result 168 states and 212 transitions. [2023-12-02 19:29:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:29:47,746 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 [2023-12-02 19:29:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:47,748 INFO L225 Difference]: With dead ends: 168 [2023-12-02 19:29:47,748 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 19:29:47,749 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 [2023-12-02 19:29:47,750 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 [2023-12-02 19:29:47,750 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] [2023-12-02 19:29:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 19:29:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-12-02 19:29:47,764 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) [2023-12-02 19:29:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2023-12-02 19:29:47,766 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 64 [2023-12-02 19:29:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:47,766 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2023-12-02 19:29:47,766 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) [2023-12-02 19:29:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2023-12-02 19:29:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 19:29:47,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:47,769 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] [2023-12-02 19:29:47,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:29:47,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:47,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:47,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1449746323, now seen corresponding path program 1 times [2023-12-02 19:29:47,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:47,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405668149] [2023-12-02 19:29:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:47,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:29:48,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:48,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405668149] [2023-12-02 19:29:48,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405668149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:48,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:29:48,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:29:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306437804] [2023-12-02 19:29:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:48,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:29:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:48,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:29:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:29:48,447 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) [2023-12-02 19:29:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:48,603 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2023-12-02 19:29:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:29:48,604 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 [2023-12-02 19:29:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:48,606 INFO L225 Difference]: With dead ends: 170 [2023-12-02 19:29:48,606 INFO L226 Difference]: Without dead ends: 138 [2023-12-02 19:29:48,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:29:48,608 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:48,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 827 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:29:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-02 19:29:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2023-12-02 19:29:48,622 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) [2023-12-02 19:29:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2023-12-02 19:29:48,624 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2023-12-02 19:29:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:48,624 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2023-12-02 19:29:48,625 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) [2023-12-02 19:29:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2023-12-02 19:29:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 19:29:48,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:48,627 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] [2023-12-02 19:29:48,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:29:48,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:48,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash -710025197, now seen corresponding path program 1 times [2023-12-02 19:29:48,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:48,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393106648] [2023-12-02 19:29:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:48,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 19:29:50,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:50,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393106648] [2023-12-02 19:29:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393106648] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:29:50,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354831888] [2023-12-02 19:29:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:50,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:50,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:50,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e9cc5e-f790-4780-a9e5-b03d72b23b95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:29:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:51,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-02 19:29:51,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:51,645 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 [2023-12-02 19:29:55,221 INFO L349 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2023-12-02 19:29:55,221 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 [2023-12-02 19:29:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:29:55,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:30:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354831888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:30:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [249258071] [2023-12-02 19:30:05,434 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-12-02 19:30:05,435 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:30:05,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:30:05,443 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:30:05,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:32:35,601 WARN L293 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 2725 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:32:42,355 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification that was a NOOP. DAG size: 2725 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:32:52,455 WARN L293 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 2726 DAG size of output: 2726 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:32:59,236 WARN L293 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 2725 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:33:06,107 WARN L293 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 2725 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:33:16,218 WARN L293 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 2726 DAG size of output: 2726 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:34:25,540 WARN L293 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 2689 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:35:27,953 WARN L293 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 2687 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:36:22,453 WARN L293 SmtUtils]: Spent 7.11s on a formula simplification that was a NOOP. DAG size: 2689 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:37:25,573 WARN L293 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 2687 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:38:07,131 WARN L293 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 3611 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:38:16,230 WARN L293 SmtUtils]: Spent 9.04s on a formula simplification that was a NOOP. DAG size: 3611 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:38:38,114 WARN L293 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 2689 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:39:38,538 INFO L197 IcfgInterpreter]: Interpreting procedure aws_string_new_from_string with input of size 65 for LOIs [2023-12-02 19:39:42,664 INFO L197 IcfgInterpreter]: Interpreting procedure aws_string_is_valid with input of size 84 for LOIs [2023-12-02 19:39:42,730 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 76 for LOIs [2023-12-02 19:39:42,758 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 43 for LOIs [2023-12-02 19:39:42,761 INFO L197 IcfgInterpreter]: Interpreting procedure aws_string_new_from_array with input of size 72 for LOIs [2023-12-02 19:39:44,503 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 2690 for LOIs [2023-12-02 19:39:55,348 INFO L197 IcfgInterpreter]: Interpreting procedure aws_add_size_checked with input of size 140 for LOIs [2023-12-02 19:39:56,745 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 140 for LOIs [2023-12-02 19:39:56,810 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_plus with input of size 128 for LOIs [2023-12-02 19:39:56,875 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 2728 for LOIs [2023-12-02 19:41:12,864 WARN L293 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 2701 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:43:31,643 WARN L293 SmtUtils]: Spent 6.66s on a formula simplification that was a NOOP. DAG size: 2701 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)