./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_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_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/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_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/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_c015d6b0-58e4-49ea-8fa9-220120828618/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 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:23:18,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:23:18,993 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 12:23:18,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:23:18,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:23:19,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:23:19,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:23:19,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:23:19,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:23:19,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:23:19,031 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:23:19,031 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:23:19,032 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:23:19,033 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:23:19,033 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:23:19,034 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:23:19,034 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:23:19,035 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:23:19,036 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:23:19,036 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:23:19,037 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:23:19,038 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:23:19,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:23:19,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:23:19,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:23:19,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:23:19,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:23:19,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:23:19,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:23:19,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:23:19,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:23:19,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:23:19,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:23:19,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:23:19,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:23:19,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:23:19,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:23:19,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:23:19,045 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:23:19,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:23:19,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:23:19,046 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:23:19,047 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:23:19,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:23:19,047 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_c015d6b0-58e4-49ea-8fa9-220120828618/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a [2023-12-02 12:23:19,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:23:19,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:23:19,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:23:19,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:23:19,350 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:23:19,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2023-12-02 12:23:22,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:23:22,657 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:23:22,658 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2023-12-02 12:23:22,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/data/67825a106/97e4e50a38454979a42660c89e39bb13/FLAG35c42064e [2023-12-02 12:23:22,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/data/67825a106/97e4e50a38454979a42660c89e39bb13 [2023-12-02 12:23:22,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:23:22,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:23:22,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:23:22,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:23:22,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:23:22,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:22" (1/1) ... [2023-12-02 12:23:22,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cffa38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:22, skipping insertion in model container [2023-12-02 12:23:22,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:22" (1/1) ... [2023-12-02 12:23:22,847 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:23:23,093 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_c015d6b0-58e4-49ea-8fa9-220120828618/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4499,4512] [2023-12-02 12:23:23,101 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_c015d6b0-58e4-49ea-8fa9-220120828618/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4559,4572] [2023-12-02 12:23:24,127 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,651 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 12:23:24,652 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 12:23:24,654 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 12:23:24,655 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 12:23:24,657 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 12:23:24,658 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 12:23:24,659 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 12:23:24,660 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 12:23:24,661 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 12:23:24,662 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 12:23:24,924 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,925 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:24,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:23:25,050 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:23:25,065 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_c015d6b0-58e4-49ea-8fa9-220120828618/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4499,4512] [2023-12-02 12:23:25,066 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_c015d6b0-58e4-49ea-8fa9-220120828618/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4559,4572] [2023-12-02 12:23:25,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,111 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,112 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,113 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,113 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,147 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 12:23:25,148 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 12:23:25,149 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 12:23:25,150 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 12:23:25,152 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 12:23:25,152 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 12:23:25,153 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 12:23:25,153 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 12:23:25,154 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 12:23:25,154 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 12:23:25,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-12-02 12:23:25,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:23:25,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-12-02 12:23:25,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:23:25,521 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,521 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,521 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,522 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,522 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,522 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,522 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,522 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,522 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,523 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,523 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,523 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,523 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,524 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,524 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,524 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,524 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,525 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:25,534 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:23:25,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25 WrapperNode [2023-12-02 12:23:25,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:23:25,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:23:25,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:23:25,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:23:25,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,741 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 62, calls inlined = 11, statements flattened = 1022 [2023-12-02 12:23:25,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:23:25,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:23:25,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:23:25,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:23:25,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:23:25,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:23:25,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:23:25,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:23:25,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (1/1) ... [2023-12-02 12:23:25,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:23:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:25,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:23:25,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:23:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-12-02 12:23:25,922 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-12-02 12:23:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-12-02 12:23:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-12-02 12:23:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ntohl [2023-12-02 12:23:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:23:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 12:23:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 12:23:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-12-02 12:23:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 12:23:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 12:23:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:23:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 12:23:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 12:23:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:23:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:23:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:23:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:23:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:23:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh32 [2023-12-02 12:23:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh32 [2023-12-02 12:23:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:23:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:23:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 12:23:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 12:23:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-12-02 12:23:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-12-02 12:23:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 12:23:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 12:23:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 12:23:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 12:23:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:23:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:23:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:23:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:23:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 12:23:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 12:23:25,928 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 12:23:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:23:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-12-02 12:23:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:23:26,209 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:23:26,212 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:23:27,813 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:23:28,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:23:28,203 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 12:23:28,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:28 BoogieIcfgContainer [2023-12-02 12:23:28,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:23:28,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:23:28,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:23:28,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:23:28,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:23:22" (1/3) ... [2023-12-02 12:23:28,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a22898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:28, skipping insertion in model container [2023-12-02 12:23:28,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:25" (2/3) ... [2023-12-02 12:23:28,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a22898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:28, skipping insertion in model container [2023-12-02 12:23:28,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:28" (3/3) ... [2023-12-02 12:23:28,214 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be32_harness.i [2023-12-02 12:23:28,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:23:28,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:23:28,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:23:28,290 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;@65298a76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:23:28,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:23:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 12:23:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 12:23:28,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:28,309 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1] [2023-12-02 12:23:28,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:28,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1988488293, now seen corresponding path program 1 times [2023-12-02 12:23:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:28,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320553455] [2023-12-02 12:23:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-02 12:23:32,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320553455] [2023-12-02 12:23:32,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320553455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:32,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539457936] [2023-12-02 12:23:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:32,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:23:32,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:23:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:33,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 12:23:33,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:23:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 12:23:33,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:23:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539457936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:33,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:23:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 11 [2023-12-02 12:23:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540501556] [2023-12-02 12:23:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:33,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:23:33,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:33,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:23:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 12:23:33,441 INFO L87 Difference]: Start difference. First operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-02 12:23:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:35,061 INFO L93 Difference]: Finished difference Result 239 states and 349 transitions. [2023-12-02 12:23:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:23:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 82 [2023-12-02 12:23:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:35,073 INFO L225 Difference]: With dead ends: 239 [2023-12-02 12:23:35,074 INFO L226 Difference]: Without dead ends: 124 [2023-12-02 12:23:35,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 12:23:35,082 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:35,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1013 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 12:23:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-02 12:23:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-02 12:23:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 64 states have (on average 1.171875) internal successors, (75), 65 states have internal predecessors, (75), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-02 12:23:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2023-12-02 12:23:35,133 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 82 [2023-12-02 12:23:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:35,135 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2023-12-02 12:23:35,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-02 12:23:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2023-12-02 12:23:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:23:35,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:35,141 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:35,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:23:35,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 12:23:35,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:35,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2124422629, now seen corresponding path program 1 times [2023-12-02 12:23:35,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:35,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652344878] [2023-12-02 12:23:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 12:23:36,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:36,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652344878] [2023-12-02 12:23:36,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652344878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:36,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:23:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:23:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700980831] [2023-12-02 12:23:36,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:23:36,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:23:36,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:23:36,800 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:23:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:37,329 INFO L93 Difference]: Finished difference Result 217 states and 300 transitions. [2023-12-02 12:23:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:23:37,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 90 [2023-12-02 12:23:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:37,336 INFO L225 Difference]: With dead ends: 217 [2023-12-02 12:23:37,336 INFO L226 Difference]: Without dead ends: 127 [2023-12-02 12:23:37,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:23:37,340 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 4 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:37,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 451 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:23:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-02 12:23:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-12-02 12:23:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 66 states have (on average 1.196969696969697) internal successors, (79), 68 states have internal predecessors, (79), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-02 12:23:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 175 transitions. [2023-12-02 12:23:37,366 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 175 transitions. Word has length 90 [2023-12-02 12:23:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:37,367 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 175 transitions. [2023-12-02 12:23:37,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:23:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 175 transitions. [2023-12-02 12:23:37,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 12:23:37,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:37,370 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:37,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:23:37,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:37,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1281350610, now seen corresponding path program 1 times [2023-12-02 12:23:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:37,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282251382] [2023-12-02 12:23:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:37,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 12:23:39,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282251382] [2023-12-02 12:23:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282251382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206307145] [2023-12-02 12:23:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:39,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:39,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:23:39,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:23:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:39,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:23:39,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:23:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 12:23:39,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:23:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 12:23:40,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206307145] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:40,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 12:23:40,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2023-12-02 12:23:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318482903] [2023-12-02 12:23:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:23:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:23:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:23:40,057 INFO L87 Difference]: Start difference. First operand 127 states and 175 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:23:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:40,552 INFO L93 Difference]: Finished difference Result 226 states and 317 transitions. [2023-12-02 12:23:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:23:40,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 91 [2023-12-02 12:23:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:40,555 INFO L225 Difference]: With dead ends: 226 [2023-12-02 12:23:40,555 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 12:23:40,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:23:40,556 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 4 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:40,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 301 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:23:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 12:23:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-12-02 12:23:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 70 states have internal predecessors, (82), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-02 12:23:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2023-12-02 12:23:40,575 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 91 [2023-12-02 12:23:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:40,576 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2023-12-02 12:23:40,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 12:23:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2023-12-02 12:23:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:23:40,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:40,578 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:40,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:23:40,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-02 12:23:40,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:40,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1495643715, now seen corresponding path program 1 times [2023-12-02 12:23:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634161299] [2023-12-02 12:23:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:40,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-02 12:23:42,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634161299] [2023-12-02 12:23:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634161299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325006389] [2023-12-02 12:23:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:42,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:42,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:42,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:23:42,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:23:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:43,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-02 12:23:43,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:23:43,796 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 11 treesize of output 7 [2023-12-02 12:23:43,803 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 12:23:43,812 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 11 treesize of output 7 [2023-12-02 12:23:45,150 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 12:23:45,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 12:23:45,162 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 12:23:45,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 12:23:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-02 12:23:45,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:23:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325006389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:45,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:23:45,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [5] total 22 [2023-12-02 12:23:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558261383] [2023-12-02 12:23:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 12:23:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 12:23:45,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:23:45,551 INFO L87 Difference]: Start difference. First operand 130 states and 178 transitions. Second operand has 19 states, 10 states have (on average 3.8) internal successors, (38), 13 states have internal predecessors, (38), 7 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-02 12:23:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:51,242 INFO L93 Difference]: Finished difference Result 252 states and 341 transitions. [2023-12-02 12:23:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 12:23:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 10 states have (on average 3.8) internal successors, (38), 13 states have internal predecessors, (38), 7 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 92 [2023-12-02 12:23:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:51,246 INFO L225 Difference]: With dead ends: 252 [2023-12-02 12:23:51,246 INFO L226 Difference]: Without dead ends: 140 [2023-12-02 12:23:51,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:23:51,249 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 68 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:51,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1473 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-02 12:23:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-02 12:23:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-12-02 12:23:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 73 states have internal predecessors, (84), 48 states have call successors, (48), 15 states have call predecessors, (48), 15 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-02 12:23:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 180 transitions. [2023-12-02 12:23:51,274 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 180 transitions. Word has length 92 [2023-12-02 12:23:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:51,274 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 180 transitions. [2023-12-02 12:23:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 10 states have (on average 3.8) internal successors, (38), 13 states have internal predecessors, (38), 7 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-02 12:23:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 180 transitions. [2023-12-02 12:23:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 12:23:51,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:51,277 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:51,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:23:51,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:51,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:51,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2022632161, now seen corresponding path program 1 times [2023-12-02 12:23:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:51,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982543177] [2023-12-02 12:23:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-02 12:23:52,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982543177] [2023-12-02 12:23:52,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982543177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659090285] [2023-12-02 12:23:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:52,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:52,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:52,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:23:52,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c015d6b0-58e4-49ea-8fa9-220120828618/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:23:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:53,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-02 12:23:53,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:23:53,779 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 12:23:54,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 12:23:54,591 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 24 treesize of output 20 [2023-12-02 12:23:54,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 12:23:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 12:23:54,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:23:55,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-12-02 12:23:55,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-12-02 12:23:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-02 12:23:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659090285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:23:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529380590] [2023-12-02 12:23:55,454 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2023-12-02 12:23:55,454 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:23:55,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:23:55,462 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:23:55,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:25:29,293 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 2794 DAG size of output: 2792 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 12:25:42,989 WARN L293 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 2794 DAG size of output: 2792 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 12:30:02,915 WARN L293 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 2802 DAG size of output: 2802 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 12:30:18,746 WARN L293 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 2802 DAG size of output: 2802 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 12:36:49,630 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memcpy with input of size 153 for LOIs [2023-12-02 12:36:49,920 INFO L197 IcfgInterpreter]: Interpreting procedure aws_ntoh32 with input of size 52 for LOIs [2023-12-02 12:36:49,926 INFO L197 IcfgInterpreter]: Interpreting procedure aws_byte_cursor_read with input of size 279 for LOIs [2023-12-02 12:37:12,352 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2023-12-02 12:37:12,365 INFO L197 IcfgInterpreter]: Interpreting procedure aws_byte_cursor_is_valid with input of size 47 for LOIs [2023-12-02 12:37:12,688 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 2715 for LOIs