./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire --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 376d17ae01be1a0e4efb367d6292ac1fddb60cf0b492e28519b7a613615b5260 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:35:03,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:35:03,943 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:35:03,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:35:03,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:35:03,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:35:03,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:35:03,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:35:04,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:35:04,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:35:04,006 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:35:04,007 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:35:04,008 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:35:04,010 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:35:04,010 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:35:04,011 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:35:04,011 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:35:04,012 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:35:04,012 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:35:04,013 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:35:04,013 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:35:04,014 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:35:04,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:35:04,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:35:04,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:35:04,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:35:04,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:35:04,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:35:04,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:35:04,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:35:04,020 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:35:04,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:35:04,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:35:04,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:35:04,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:04,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:35:04,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:35:04,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:35:04,023 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:35:04,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:35:04,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:35:04,024 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:35:04,024 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:35:04,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:35:04,025 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_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376d17ae01be1a0e4efb367d6292ac1fddb60cf0b492e28519b7a613615b5260 [2023-11-23 20:35:04,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:35:04,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:35:04,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:35:04,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:35:04,399 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:35:04,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i [2023-11-23 20:35:07,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:08,231 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:08,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i [2023-11-23 20:35:08,281 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/data/b4f1f4337/be832e1af33e4038aa3d74d56386b29c/FLAG09c44fe3b [2023-11-23 20:35:08,302 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/data/b4f1f4337/be832e1af33e4038aa3d74d56386b29c [2023-11-23 20:35:08,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:08,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:08,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:08,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:08,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:08,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:08" (1/1) ... [2023-11-23 20:35:08,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70797371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:08, skipping insertion in model container [2023-11-23 20:35:08,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:08" (1/1) ... [2023-11-23 20:35:08,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:08,891 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_cfdda7e9-a907-4504-98da-e4a2ffe72676/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i[4493,4506] [2023-11-23 20:35:08,900 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_cfdda7e9-a907-4504-98da-e4a2ffe72676/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i[4553,4566] [2023-11-23 20:35:10,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,275 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,275 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,276 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,278 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,304 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:10,846 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:35:10,847 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:35:10,849 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:35:10,850 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:35:10,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:35:10,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:35:10,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:35:10,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:35:10,856 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:35:10,857 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:35:11,486 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,487 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,529 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,530 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,542 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,565 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,567 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,567 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,569 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:11,682 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:11,720 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_cfdda7e9-a907-4504-98da-e4a2ffe72676/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i[4493,4506] [2023-11-23 20:35:11,721 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_cfdda7e9-a907-4504-98da-e4a2ffe72676/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness_negated.i[4553,4566] [2023-11-23 20:35:11,786 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,803 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,805 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,805 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,806 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:11,845 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:35:11,846 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:35:11,847 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:35:11,849 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:35:11,850 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:35:11,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:35:11,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:35:11,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:35:11,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:35:11,857 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:35:11,967 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-23 20:35:12,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,079 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,093 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,094 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,110 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,111 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,112 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,113 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,113 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,114 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:35:12,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:12,534 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,534 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,534 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,535 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,535 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,535 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,535 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,535 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,535 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,536 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,536 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,536 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,536 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,536 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,536 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,537 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,537 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,537 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:12,545 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:12,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12 WrapperNode [2023-11-23 20:35:12,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:12,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:12,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:12,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:12,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,809 INFO L138 Inliner]: procedures = 772, calls = 2433, calls flagged for inlining = 69, calls inlined = 12, statements flattened = 621 [2023-11-23 20:35:12,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:12,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:12,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:12,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:12,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:12,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:12,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:12,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:12,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (1/1) ... [2023-11-23 20:35:12,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:12,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:12,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:12,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:35:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:35:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 20:35:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 20:35:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:35:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:35:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 20:35:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 20:35:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:35:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:35:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 20:35:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 20:35:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 20:35:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 20:35:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:35:13,024 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:35:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:35:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 20:35:13,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 20:35:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:35:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 20:35:13,024 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 20:35:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:35:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 20:35:13,025 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 20:35:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:35:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 20:35:13,025 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 20:35:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:35:13,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:35:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 20:35:13,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 20:35:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:35:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 20:35:13,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 20:35:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 20:35:13,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 20:35:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:13,443 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:13,446 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:14,477 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:14,670 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:14,672 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:35:14,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:14 BoogieIcfgContainer [2023-11-23 20:35:14,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:14,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:14,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:14,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:14,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:08" (1/3) ... [2023-11-23 20:35:14,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c9aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:14, skipping insertion in model container [2023-11-23 20:35:14,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:12" (2/3) ... [2023-11-23 20:35:14,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c9aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:14, skipping insertion in model container [2023-11-23 20:35:14,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:14" (3/3) ... [2023-11-23 20:35:14,693 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness_negated.i [2023-11-23 20:35:14,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:14,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:35:14,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:14,804 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;@143be53a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:14,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:35:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 20:35:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 20:35:14,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:14,827 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:35:14,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:14,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1470633193, now seen corresponding path program 1 times [2023-11-23 20:35:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407734033] [2023-11-23 20:35:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:15,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:35:15,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518388917] [2023-11-23 20:35:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:15,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:15,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:15,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:15,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:35:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:15,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:35:15,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 20:35:16,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:16,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407734033] [2023-11-23 20:35:16,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:35:16,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518388917] [2023-11-23 20:35:16,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518388917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:16,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:16,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139384275] [2023-11-23 20:35:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:16,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:35:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:35:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:35:16,086 INFO L87 Difference]: Start difference. First operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 20:35:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:16,439 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2023-11-23 20:35:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:35:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 100 [2023-11-23 20:35:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:16,451 INFO L225 Difference]: With dead ends: 136 [2023-11-23 20:35:16,452 INFO L226 Difference]: Without dead ends: 99 [2023-11-23 20:35:16,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:35:16,458 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:16,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:35:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-23 20:35:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-23 20:35:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 53 states have internal predecessors, (60), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 20:35:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2023-11-23 20:35:16,511 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 100 [2023-11-23 20:35:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:16,513 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2023-11-23 20:35:16,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 20:35:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2023-11-23 20:35:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 20:35:16,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:16,520 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:35:16,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:16,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:16,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:16,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 585201912, now seen corresponding path program 1 times [2023-11-23 20:35:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:16,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566109499] [2023-11-23 20:35:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:16,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:35:16,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263911459] [2023-11-23 20:35:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:16,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:16,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:35:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:17,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:35:17,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 20:35:17,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:17,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566109499] [2023-11-23 20:35:17,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:35:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263911459] [2023-11-23 20:35:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263911459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:17,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:35:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157995855] [2023-11-23 20:35:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:17,716 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 20:35:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:18,413 INFO L93 Difference]: Finished difference Result 192 states and 239 transitions. [2023-11-23 20:35:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:35:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 105 [2023-11-23 20:35:18,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:18,416 INFO L225 Difference]: With dead ends: 192 [2023-11-23 20:35:18,417 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 20:35:18,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:18,419 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:18,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 408 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:35:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 20:35:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 20:35:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 56 states have internal predecessors, (63), 32 states have call successors, (32), 14 states have call predecessors, (32), 15 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-23 20:35:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2023-11-23 20:35:18,437 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 105 [2023-11-23 20:35:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:18,438 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2023-11-23 20:35:18,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 20:35:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2023-11-23 20:35:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 20:35:18,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:18,441 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:35:18,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:18,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:18,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:18,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:18,660 INFO L85 PathProgramCache]: Analyzing trace with hash 683755868, now seen corresponding path program 1 times [2023-11-23 20:35:18,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:18,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994030613] [2023-11-23 20:35:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:18,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 20:35:21,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:21,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994030613] [2023-11-23 20:35:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994030613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:21,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653534392] [2023-11-23 20:35:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:21,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:21,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:21,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:21,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:35:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:22,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-23 20:35:22,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:22,454 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 [2023-11-23 20:35:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 20:35:23,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:23,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653534392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:23,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:23,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 16 [2023-11-23 20:35:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146810528] [2023-11-23 20:35:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 20:35:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 20:35:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:35:23,864 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (26), 4 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-23 20:35:27,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 20:35:30,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:32,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:34,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:36,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:38,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:41,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:43,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:45,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:47,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:49,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:51,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:53,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:55,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 20:35:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:55,970 INFO L93 Difference]: Finished difference Result 262 states and 324 transitions. [2023-11-23 20:35:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 20:35:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (26), 4 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 113 [2023-11-23 20:35:55,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:55,978 INFO L225 Difference]: With dead ends: 262 [2023-11-23 20:35:55,980 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 20:35:55,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-11-23 20:35:55,985 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 96 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 98 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:55,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 470 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 916 Invalid, 14 Unknown, 0 Unchecked, 31.8s Time] [2023-11-23 20:35:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 20:35:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2023-11-23 20:35:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 99 states have internal predecessors, (109), 52 states have call successors, (52), 24 states have call predecessors, (52), 29 states have return successors, (59), 52 states have call predecessors, (59), 50 states have call successors, (59) [2023-11-23 20:35:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 220 transitions. [2023-11-23 20:35:56,036 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 220 transitions. Word has length 113 [2023-11-23 20:35:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:56,037 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 220 transitions. [2023-11-23 20:35:56,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (26), 4 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-23 20:35:56,037 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 220 transitions. [2023-11-23 20:35:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 20:35:56,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:56,041 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:56,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:56,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:56,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:56,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1424550995, now seen corresponding path program 1 times [2023-11-23 20:35:56,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:56,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361770717] [2023-11-23 20:35:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:56,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:56,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:35:56,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651032341] [2023-11-23 20:35:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:56,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:56,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:56,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:56,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:35:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:57,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 20:35:57,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 20:35:57,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:57,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361770717] [2023-11-23 20:35:57,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:35:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651032341] [2023-11-23 20:35:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651032341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 20:35:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233713599] [2023-11-23 20:35:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:35:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:35:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:35:57,183 INFO L87 Difference]: Start difference. First operand 176 states and 220 transitions. Second operand has 9 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 20:35:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:59,067 INFO L93 Difference]: Finished difference Result 335 states and 418 transitions. [2023-11-23 20:35:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:35:59,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 124 [2023-11-23 20:35:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:59,071 INFO L225 Difference]: With dead ends: 335 [2023-11-23 20:35:59,071 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 20:35:59,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:35:59,074 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 13 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:59,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 616 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 20:35:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 20:35:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 181. [2023-11-23 20:35:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 103 states have internal predecessors, (112), 52 states have call successors, (52), 24 states have call predecessors, (52), 31 states have return successors, (63), 53 states have call predecessors, (63), 50 states have call successors, (63) [2023-11-23 20:35:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 227 transitions. [2023-11-23 20:35:59,114 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 227 transitions. Word has length 124 [2023-11-23 20:35:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:59,115 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 227 transitions. [2023-11-23 20:35:59,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 20:35:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 227 transitions. [2023-11-23 20:35:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 20:35:59,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:59,119 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:35:59,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:59,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfdda7e9-a907-4504-98da-e4a2ffe72676/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:59,345 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1835768260, now seen corresponding path program 1 times [2023-11-23 20:35:59,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:59,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463137955] [2023-11-23 20:35:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat