./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:44,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:45,084 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:48:45,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:45,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:45,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:45,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:45,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:45,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:45,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:45,143 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:45,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:45,145 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:45,147 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:45,147 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:45,148 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:45,148 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:45,149 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:45,149 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:45,150 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:45,150 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:45,151 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:45,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:45,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:45,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:45,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:45,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:45,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:45,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:45,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:45,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:45,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:45,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:45,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:45,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:45,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:45,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:45,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:48:45,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:45,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:45,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:45,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:48:45,161 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:45,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:45,162 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_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2023-11-24 23:48:45,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:45,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:45,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:45,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:45,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:45,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2023-11-24 23:48:48,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:49,237 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:49,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2023-11-24 23:48:49,284 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/data/b76624810/809a98de5a574dcc814b9c852602e6e0/FLAG66d7bc435 [2023-11-24 23:48:49,304 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/data/b76624810/809a98de5a574dcc814b9c852602e6e0 [2023-11-24 23:48:49,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:49,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:49,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:49,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:49,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:49,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:49" (1/1) ... [2023-11-24 23:48:49,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6146f2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:49, skipping insertion in model container [2023-11-24 23:48:49,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:49" (1/1) ... [2023-11-24 23:48:49,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:49,797 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_3dd51e78-fb28-4d2d-84ec-b43d82996d84/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2023-11-24 23:48:49,807 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_3dd51e78-fb28-4d2d-84ec-b43d82996d84/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2023-11-24 23:48:51,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,197 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,198 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,203 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,235 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,236 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,247 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:51,782 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:48:51,784 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:48:51,785 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:48:51,790 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:48:51,797 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:48:51,798 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:48:51,799 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:48:51,799 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:48:51,802 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:48:51,803 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:48:52,045 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,056 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,166 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,167 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:52,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:48:52,433 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_3dd51e78-fb28-4d2d-84ec-b43d82996d84/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2023-11-24 23:48:52,434 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_3dd51e78-fb28-4d2d-84ec-b43d82996d84/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2023-11-24 23:48:52,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,497 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,608 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:48:52,609 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:48:52,610 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:48:52,611 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:48:52,612 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:48:52,613 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:48:52,614 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:48:52,615 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:48:52,615 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:48:52,616 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:48:52,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,677 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8553] [2023-11-24 23:48:52,741 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,743 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:48:52,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [9039-9050] [2023-11-24 23:48:52,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:53,012 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,012 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,012 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,012 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,013 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,013 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,013 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,013 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,013 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,013 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,014 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,015 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,015 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,015 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:53,023 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:48:53,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53 WrapperNode [2023-11-24 23:48:53,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:53,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:53,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:48:53,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:48:53,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,281 INFO L138 Inliner]: procedures = 694, calls = 3058, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 965 [2023-11-24 23:48:53,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:53,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:48:53,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:48:53,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:48:53,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:48:53,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:48:53,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:48:53,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:48:53,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (1/1) ... [2023-11-24 23:48:53,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:53,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:48:53,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dd51e78-fb28-4d2d-84ec-b43d82996d84/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:48:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-24 23:48:53,592 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-24 23:48:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:48:53,592 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:48:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-24 23:48:53,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-24 23:48:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:48:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:48:53,594 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:48:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:48:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:48:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:48:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:48:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:48:53,595 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:48:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:48:53,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:48:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:48:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:48:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:48:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:48:53,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:48:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:48:53,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:48:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-24 23:48:53,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-24 23:48:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:48:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:48:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-24 23:48:53,599 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-24 23:48:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:48:53,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:48:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:48:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:48:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-24 23:48:53,601 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-24 23:48:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:48:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:48:53,601 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:48:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:48:53,601 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:48:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:48:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-24 23:48:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:48:53,987 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:48:53,990 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:48:55,656 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:48:56,003 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:48:56,003 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:48:56,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:48:56 BoogieIcfgContainer [2023-11-24 23:48:56,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:48:56,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:48:56,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:48:56,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:48:56,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:48:49" (1/3) ... [2023-11-24 23:48:56,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c96f453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:48:56, skipping insertion in model container [2023-11-24 23:48:56,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:53" (2/3) ... [2023-11-24 23:48:56,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c96f453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:48:56, skipping insertion in model container [2023-11-24 23:48:56,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:48:56" (3/3) ... [2023-11-24 23:48:56,026 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2023-11-24 23:48:56,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:48:56,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:48:56,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:48:56,127 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;@530c94af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:48:56,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:48:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 80 states have (on average 1.2375) internal successors, (99), 81 states have internal predecessors, (99), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-24 23:48:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 23:48:56,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:56,165 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-24 23:48:56,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:56,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1583292437, now seen corresponding path program 1 times [2023-11-24 23:48:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:56,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756915398] [2023-11-24 23:48:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:48:58,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756915398] [2023-11-24 23:48:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756915398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:48:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:48:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123762824] [2023-11-24 23:48:58,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:58,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:48:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:48:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:48:58,863 INFO L87 Difference]: Start difference. First operand has 143 states, 80 states have (on average 1.2375) internal successors, (99), 81 states have internal predecessors, (99), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:48:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:59,459 INFO L93 Difference]: Finished difference Result 213 states and 300 transitions. [2023-11-24 23:48:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:48:59,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 46 [2023-11-24 23:48:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:59,473 INFO L225 Difference]: With dead ends: 213 [2023-11-24 23:48:59,473 INFO L226 Difference]: Without dead ends: 145 [2023-11-24 23:48:59,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:48:59,481 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 87 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:59,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 725 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:48:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-24 23:48:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-24 23:48:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 83 states have internal predecessors, (100), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-24 23:48:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 195 transitions. [2023-11-24 23:48:59,568 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 195 transitions. Word has length 46 [2023-11-24 23:48:59,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:59,569 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 195 transitions. [2023-11-24 23:48:59,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:48:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 195 transitions. [2023-11-24 23:48:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:48:59,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:59,574 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-24 23:48:59,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:48:59,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:59,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash -707380850, now seen corresponding path program 1 times [2023-11-24 23:48:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:59,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680269896] [2023-11-24 23:48:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:49:00,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680269896] [2023-11-24 23:49:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680269896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708297976] [2023-11-24 23:49:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:00,203 INFO L87 Difference]: Start difference. First operand 145 states and 195 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-24 23:49:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:00,424 INFO L93 Difference]: Finished difference Result 230 states and 315 transitions. [2023-11-24 23:49:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:00,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 48 [2023-11-24 23:49:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:00,428 INFO L225 Difference]: With dead ends: 230 [2023-11-24 23:49:00,428 INFO L226 Difference]: Without dead ends: 192 [2023-11-24 23:49:00,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:00,431 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 22 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:00,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 516 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-24 23:49:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 177. [2023-11-24 23:49:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 103 states have internal predecessors, (125), 60 states have call successors, (60), 14 states have call predecessors, (60), 14 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-24 23:49:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2023-11-24 23:49:00,460 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 48 [2023-11-24 23:49:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:00,461 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2023-11-24 23:49:00,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-24 23:49:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2023-11-24 23:49:00,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-24 23:49:00,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:00,467 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-24 23:49:00,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:49:00,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:00,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1812366435, now seen corresponding path program 1 times [2023-11-24 23:49:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473087014] [2023-11-24 23:49:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 23:49:01,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473087014] [2023-11-24 23:49:01,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473087014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:01,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:01,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:49:01,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109582849] [2023-11-24 23:49:01,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:01,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:49:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:49:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:49:01,804 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:49:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:02,969 INFO L93 Difference]: Finished difference Result 188 states and 254 transitions. [2023-11-24 23:49:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:49:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 50 [2023-11-24 23:49:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:02,973 INFO L225 Difference]: With dead ends: 188 [2023-11-24 23:49:02,973 INFO L226 Difference]: Without dead ends: 177 [2023-11-24 23:49:02,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:49:02,975 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 134 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:02,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 321 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:49:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-24 23:49:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-24 23:49:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 103 states have internal predecessors, (124), 60 states have call successors, (60), 14 states have call predecessors, (60), 14 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-24 23:49:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 243 transitions. [2023-11-24 23:49:03,057 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 243 transitions. Word has length 50 [2023-11-24 23:49:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:03,059 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 243 transitions. [2023-11-24 23:49:03,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:49:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 243 transitions. [2023-11-24 23:49:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:49:03,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:03,071 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-24 23:49:03,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:49:03,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:03,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1636523459, now seen corresponding path program 1 times [2023-11-24 23:49:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619672857] [2023-11-24 23:49:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:49:07,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:07,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619672857] [2023-11-24 23:49:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619672857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-24 23:49:07,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697711791] [2023-11-24 23:49:07,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:07,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:49:07,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:07,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:49:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:49:07,413 INFO L87 Difference]: Start difference. First operand 177 states and 243 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:49:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:08,929 INFO L93 Difference]: Finished difference Result 254 states and 358 transitions. [2023-11-24 23:49:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:49:08,930 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 52 [2023-11-24 23:49:08,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:08,934 INFO L225 Difference]: With dead ends: 254 [2023-11-24 23:49:08,935 INFO L226 Difference]: Without dead ends: 252 [2023-11-24 23:49:08,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:49:08,936 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 88 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:08,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1498 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:49:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-24 23:49:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 213. [2023-11-24 23:49:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 129 states have internal predecessors, (156), 70 states have call successors, (70), 15 states have call predecessors, (70), 15 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-24 23:49:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2023-11-24 23:49:08,978 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 52 [2023-11-24 23:49:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:08,979 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2023-11-24 23:49:08,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:49:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2023-11-24 23:49:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-24 23:49:08,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:08,982 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-24 23:49:08,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:49:08,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:08,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1738440512, now seen corresponding path program 1 times [2023-11-24 23:49:08,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864838244] [2023-11-24 23:49:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:08,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-24 23:49:13,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:13,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864838244] [2023-11-24 23:49:13,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864838244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:13,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:13,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 23:49:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262878446] [2023-11-24 23:49:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:13,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:49:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:49:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:49:13,054 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-24 23:49:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:14,968 INFO L93 Difference]: Finished difference Result 260 states and 362 transitions. [2023-11-24 23:49:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:49:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 56 [2023-11-24 23:49:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:14,971 INFO L225 Difference]: With dead ends: 260 [2023-11-24 23:49:14,972 INFO L226 Difference]: Without dead ends: 258 [2023-11-24 23:49:14,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:49:14,973 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 166 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:14,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 555 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 23:49:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-24 23:49:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 189. [2023-11-24 23:49:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 62 states have call successors, (62), 15 states have call predecessors, (62), 15 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-24 23:49:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2023-11-24 23:49:15,007 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 56 [2023-11-24 23:49:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:15,007 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2023-11-24 23:49:15,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-24 23:49:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2023-11-24 23:49:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-24 23:49:15,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:15,010 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-11-24 23:49:15,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:49:15,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:15,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash 668527087, now seen corresponding path program 1 times [2023-11-24 23:49:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:15,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553902092] [2023-11-24 23:49:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:49:20,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:20,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553902092] [2023-11-24 23:49:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553902092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:20,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-24 23:49:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487207620] [2023-11-24 23:49:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:49:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:49:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:49:20,779 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-24 23:49:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:21,798 INFO L93 Difference]: Finished difference Result 266 states and 372 transitions. [2023-11-24 23:49:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 23:49:21,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) Word has length 58 [2023-11-24 23:49:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:21,802 INFO L225 Difference]: With dead ends: 266 [2023-11-24 23:49:21,802 INFO L226 Difference]: Without dead ends: 264 [2023-11-24 23:49:21,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:49:21,804 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 131 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:21,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1229 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:49:21,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-24 23:49:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 227. [2023-11-24 23:49:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 137 states have (on average 1.218978102189781) internal successors, (167), 140 states have internal predecessors, (167), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-24 23:49:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 312 transitions. [2023-11-24 23:49:21,848 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 312 transitions. Word has length 58 [2023-11-24 23:49:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:21,849 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 312 transitions. [2023-11-24 23:49:21,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-24 23:49:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 312 transitions. [2023-11-24 23:49:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-24 23:49:21,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:21,853 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2023-11-24 23:49:21,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:49:21,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:21,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1100356396, now seen corresponding path program 1 times [2023-11-24 23:49:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523333764] [2023-11-24 23:49:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:21,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat