./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_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_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/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_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/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_04d18738-6731-434a-94bc-f45480685ded/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 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:51:38,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:51:38,578 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 12:51:38,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:51:38,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:51:38,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:51:38,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:51:38,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:51:38,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:51:38,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:51:38,612 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:51:38,612 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:51:38,613 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:51:38,613 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:51:38,614 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:51:38,614 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:51:38,615 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:51:38,615 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:51:38,616 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:51:38,616 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:51:38,617 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:51:38,618 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:51:38,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:51:38,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:51:38,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:51:38,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:51:38,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:51:38,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:51:38,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:51:38,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:51:38,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:51:38,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:51:38,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:51:38,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:51:38,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:38,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:51:38,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:51:38,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:51:38,626 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:51:38,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:51:38,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:51:38,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:51:38,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:51:38,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:51:38,627 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_04d18738-6731-434a-94bc-f45480685ded/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 [2023-12-02 12:51:38,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:51:38,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:51:38,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:51:38,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:51:38,880 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:51:38,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2023-12-02 12:51:41,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:51:42,052 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:51:42,053 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2023-12-02 12:51:42,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/data/c3ac58277/7feb19e231dc4d67ac4ea1b5f7ba447c/FLAGc3986cfbd [2023-12-02 12:51:42,098 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/data/c3ac58277/7feb19e231dc4d67ac4ea1b5f7ba447c [2023-12-02 12:51:42,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:51:42,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:51:42,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:42,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:51:42,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:51:42,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:42" (1/1) ... [2023-12-02 12:51:42,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc455b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:42, skipping insertion in model container [2023-12-02 12:51:42,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:42" (1/1) ... [2023-12-02 12:51:42,222 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:51:42,474 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_04d18738-6731-434a-94bc-f45480685ded/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2023-12-02 12:51:42,483 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_04d18738-6731-434a-94bc-f45480685ded/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2023-12-02 12:51:43,390 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:43,837 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 12:51:43,838 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 12:51:43,839 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 12:51:43,840 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 12:51:43,852 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 12:51:43,853 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 12:51:43,854 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 12:51:43,855 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 12:51:43,855 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 12:51:43,856 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 12:51:44,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:44,213 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:51:44,225 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_04d18738-6731-434a-94bc-f45480685ded/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2023-12-02 12:51:44,225 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_04d18738-6731-434a-94bc-f45480685ded/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2023-12-02 12:51:44,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,275 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,275 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,306 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 12:51:44,307 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 12:51:44,307 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 12:51:44,308 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 12:51:44,308 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 12:51:44,309 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 12:51:44,309 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 12:51:44,310 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 12:51:44,310 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 12:51:44,310 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 12:51:44,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-12-02 12:51:44,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:51:44,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-12-02 12:51:44,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:44,696 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,696 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,697 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,698 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,698 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,698 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,698 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,699 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,699 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,699 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,699 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,699 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:51:44,707 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:51:44,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44 WrapperNode [2023-12-02 12:51:44,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:44,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:44,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:51:44,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:51:44,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,869 INFO L138 Inliner]: procedures = 690, calls = 2617, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 795 [2023-12-02 12:51:44,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:44,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:51:44,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:51:44,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:51:44,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:51:44,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:51:44,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:51:44,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:51:44,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (1/1) ... [2023-12-02 12:51:44,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:44,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:44,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:51:44,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:51:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-12-02 12:51:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-12-02 12:51:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:51:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 12:51:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 12:51:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:51:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:51:45,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:51:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2023-12-02 12:51:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2023-12-02 12:51:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:51:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:51:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:51:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:51:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:51:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 12:51:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 12:51:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:51:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:51:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:51:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:51:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 12:51:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 12:51:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 12:51:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 12:51:45,026 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 12:51:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:51:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-12-02 12:51:45,026 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-12-02 12:51:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-12-02 12:51:45,026 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-12-02 12:51:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:51:45,237 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:51:45,240 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:51:46,139 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:51:46,489 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:51:46,490 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:51:46,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:46 BoogieIcfgContainer [2023-12-02 12:51:46,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:51:46,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:51:46,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:51:46,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:51:46,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:51:42" (1/3) ... [2023-12-02 12:51:46,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e2cf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:46, skipping insertion in model container [2023-12-02 12:51:46,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:44" (2/3) ... [2023-12-02 12:51:46,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e2cf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:46, skipping insertion in model container [2023-12-02 12:51:46,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:46" (3/3) ... [2023-12-02 12:51:46,500 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness.i [2023-12-02 12:51:46,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:51:46,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:51:46,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:51:46,574 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;@77e681a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:51:46,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:51:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 12:51:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 12:51:46,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:46,588 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:46,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:46,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash -140291234, now seen corresponding path program 1 times [2023-12-02 12:51:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559849397] [2023-12-02 12:51:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:51:50,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:50,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559849397] [2023-12-02 12:51:50,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559849397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 12:51:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930988225] [2023-12-02 12:51:50,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:50,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 12:51:50,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 12:51:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 12:51:50,319 INFO L87 Difference]: Start difference. First operand has 70 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 12:51:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:51,661 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2023-12-02 12:51:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 12:51:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2023-12-02 12:51:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:51,674 INFO L225 Difference]: With dead ends: 101 [2023-12-02 12:51:51,674 INFO L226 Difference]: Without dead ends: 68 [2023-12-02 12:51:51,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:51:51,681 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 16 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:51,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 345 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 12:51:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-02 12:51:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-02 12:51:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 12:51:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-12-02 12:51:51,730 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 43 [2023-12-02 12:51:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:51,732 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-12-02 12:51:51,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 12:51:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-12-02 12:51:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 12:51:51,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:51,736 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:51,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:51:51,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:51,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1222280649, now seen corresponding path program 1 times [2023-12-02 12:51:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594534794] [2023-12-02 12:51:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:51,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 12:52:01,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:52:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594534794] [2023-12-02 12:52:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594534794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:52:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849396102] [2023-12-02 12:52:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:52:01,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:52:01,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:52:01,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:52:01,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04d18738-6731-434a-94bc-f45480685ded/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:52:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:52:01,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-02 12:52:01,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:52:02,029 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 15 treesize of output 1 [2023-12-02 12:52:05,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 12:52:05,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-12-02 12:52:05,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-02 12:52:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:52:06,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:52:08,792 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 56951 disjunctions. This might take some time... [2023-12-02 12:55:53,314 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 56951 disjunctions.