./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1aff94200ac4117962e76fd53c645cd9f09d34e83ee2d9eea604e31ed1e8a72c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:14:50,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:14:50,658 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:14:50,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:14:50,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:14:50,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:14:50,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:14:50,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:14:50,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:14:50,705 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:14:50,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:14:50,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:14:50,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:14:50,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:14:50,709 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:14:50,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:14:50,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:14:50,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:14:50,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:14:50,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:14:50,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:14:50,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:14:50,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:14:50,713 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:14:50,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:14:50,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:14:50,715 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:14:50,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:14:50,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:50,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:14:50,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:14:50,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:14:50,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:14:50,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:14:50,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:14:50,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:14:50,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:14:50,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:14:50,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:14:50,720 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aff94200ac4117962e76fd53c645cd9f09d34e83ee2d9eea604e31ed1e8a72c [2023-11-21 22:14:51,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:14:51,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:14:51,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:14:51,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:14:51,084 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:14:51,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i [2023-11-21 22:14:54,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:14:54,919 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:14:54,923 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i [2023-11-21 22:14:54,984 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/data/95434e08d/c4f3268134c74b1d85d588bc58aabdc7/FLAGda4e989ac [2023-11-21 22:14:55,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/data/95434e08d/c4f3268134c74b1d85d588bc58aabdc7 [2023-11-21 22:14:55,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:14:55,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:14:55,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:55,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:14:55,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:14:55,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:55" (1/1) ... [2023-11-21 22:14:55,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168f5a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:55, skipping insertion in model container [2023-11-21 22:14:55,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:55" (1/1) ... [2023-11-21 22:14:55,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:14:55,575 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_a08f7df8-b763-4752-9678-970ab65a0aa2/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4493,4506] [2023-11-21 22:14:55,585 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4553,4566] [2023-11-21 22:14:57,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,213 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,217 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,234 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,235 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,243 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,244 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:57,811 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:14:57,813 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:14:57,814 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:14:57,816 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:14:57,819 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:14:57,824 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:14:57,825 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:14:57,826 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:14:57,827 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:14:57,828 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:14:58,557 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,558 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,608 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,617 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,649 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:58,803 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:14:58,831 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_a08f7df8-b763-4752-9678-970ab65a0aa2/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4493,4506] [2023-11-21 22:14:58,832 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_a08f7df8-b763-4752-9678-970ab65a0aa2/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4553,4566] [2023-11-21 22:14:58,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,903 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,915 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,917 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:58,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,004 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:14:59,005 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:14:59,006 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:14:59,007 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:14:59,008 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:14:59,009 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:14:59,010 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:14:59,010 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:14:59,011 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:14:59,011 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:14:59,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-21 22:14:59,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,166 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,167 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,181 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:14:59,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:59,543 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,543 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,543 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,543 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,543 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,544 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,544 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,544 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,544 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,544 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,544 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,545 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,545 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,545 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,545 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,545 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,545 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,546 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,556 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:14:59,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59 WrapperNode [2023-11-21 22:14:59,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:59,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:59,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:14:59,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:14:59,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,830 INFO L138 Inliner]: procedures = 772, calls = 2442, calls flagged for inlining = 66, calls inlined = 9, statements flattened = 598 [2023-11-21 22:14:59,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:59,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:14:59,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:14:59,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:14:59,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,868 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,949 INFO L187 HeapSplitter]: Split 285 memory accesses to 10 slices as follows [2, 5, 236, 9, 17, 2, 2, 3, 6, 3] [2023-11-21 22:14:59,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:15:00,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:15:00,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:15:00,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:15:00,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:15:00,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:15:00,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:15:00,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:15:00,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:15:00,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:00,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:15:00,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:15:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-21 22:15:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-21 22:15:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-21 22:15:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-21 22:15:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2023-11-21 22:15:00,149 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:15:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:15:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-21 22:15:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-21 22:15:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-21 22:15:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 22:15:00,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 22:15:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:15:00,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:15:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-21 22:15:00,152 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-21 22:15:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:15:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:15:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:15:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:15:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-21 22:15:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-21 22:15:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:15:00,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:15:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 22:15:00,154 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 22:15:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 22:15:00,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 22:15:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:15:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-21 22:15:00,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-21 22:15:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:15:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:15:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:15:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:15:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 22:15:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 22:15:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 22:15:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-21 22:15:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-21 22:15:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-21 22:15:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 22:15:00,156 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 22:15:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:15:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-21 22:15:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-21 22:15:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-21 22:15:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-21 22:15:00,158 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-21 22:15:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:15:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-21 22:15:00,158 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-21 22:15:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:15:00,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:15:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-21 22:15:00,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-21 22:15:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:15:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:15:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:15:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-21 22:15:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2023-11-21 22:15:00,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2023-11-21 22:15:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 22:15:00,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 22:15:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-21 22:15:00,161 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-21 22:15:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2023-11-21 22:15:00,161 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2023-11-21 22:15:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:15:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:15:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:15:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:15:00,600 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:15:00,604 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:15:01,788 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:15:01,975 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:15:01,976 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:15:01,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:01 BoogieIcfgContainer [2023-11-21 22:15:01,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:15:01,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:15:01,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:15:01,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:15:01,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:14:55" (1/3) ... [2023-11-21 22:15:01,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e60c3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:15:01, skipping insertion in model container [2023-11-21 22:15:01,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (2/3) ... [2023-11-21 22:15:01,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e60c3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:15:01, skipping insertion in model container [2023-11-21 22:15:01,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:01" (3/3) ... [2023-11-21 22:15:01,989 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness_negated.i [2023-11-21 22:15:02,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:15:02,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:15:02,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:15:02,093 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=PETRI_NET, 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;@7eaab5b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:15:02,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:15:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 64 states have internal predecessors, (71), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-21 22:15:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 22:15:02,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:15:02,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:02,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:15:02,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash -737743175, now seen corresponding path program 1 times [2023-11-21 22:15:02,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:02,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868039948] [2023-11-21 22:15:02,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:15:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:15:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868039948] [2023-11-21 22:15:03,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868039948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:03,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:03,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:15:03,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203002862] [2023-11-21 22:15:03,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:03,212 INFO L87 Difference]: Start difference. First operand has 112 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 64 states have internal predecessors, (71), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:15:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:03,925 INFO L93 Difference]: Finished difference Result 163 states and 217 transitions. [2023-11-21 22:15:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-21 22:15:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:15:03,946 INFO L225 Difference]: With dead ends: 163 [2023-11-21 22:15:03,946 INFO L226 Difference]: Without dead ends: 125 [2023-11-21 22:15:03,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:03,957 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:15:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 237 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:15:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-21 22:15:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 120. [2023-11-21 22:15:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 67 states have internal predecessors, (74), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 22:15:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2023-11-21 22:15:04,021 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 18 [2023-11-21 22:15:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:15:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2023-11-21 22:15:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:15:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2023-11-21 22:15:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 22:15:04,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:15:04,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:04,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:15:04,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:15:04,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1003933599, now seen corresponding path program 1 times [2023-11-21 22:15:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:04,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693335100] [2023-11-21 22:15:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:15:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:15:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:04,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693335100] [2023-11-21 22:15:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693335100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:15:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373696899] [2023-11-21 22:15:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:04,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:04,403 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:15:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:05,087 INFO L93 Difference]: Finished difference Result 161 states and 202 transitions. [2023-11-21 22:15:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-21 22:15:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:15:05,092 INFO L225 Difference]: With dead ends: 161 [2023-11-21 22:15:05,092 INFO L226 Difference]: Without dead ends: 128 [2023-11-21 22:15:05,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:05,095 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 2 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:15:05,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 235 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:15:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-21 22:15:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-21 22:15:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-21 22:15:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 163 transitions. [2023-11-21 22:15:05,121 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 163 transitions. Word has length 19 [2023-11-21 22:15:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:15:05,122 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 163 transitions. [2023-11-21 22:15:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:15:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 163 transitions. [2023-11-21 22:15:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-21 22:15:05,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:15:05,129 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2023-11-21 22:15:05,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:15:05,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:15:05,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash -981228994, now seen corresponding path program 1 times [2023-11-21 22:15:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:05,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447641797] [2023-11-21 22:15:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:05,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:15:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050250306] [2023-11-21 22:15:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:15:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:05,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:15:05,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:15:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:06,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:15:06,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:15:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-21 22:15:06,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:15:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447641797] [2023-11-21 22:15:06,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:15:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050250306] [2023-11-21 22:15:06,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050250306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:06,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:06,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:15:06,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324101785] [2023-11-21 22:15:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:06,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:15:06,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:15:06,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:15:06,441 INFO L87 Difference]: Start difference. First operand 128 states and 163 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-21 22:15:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:08,521 INFO L93 Difference]: Finished difference Result 255 states and 331 transitions. [2023-11-21 22:15:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:15:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 95 [2023-11-21 22:15:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:15:08,525 INFO L225 Difference]: With dead ends: 255 [2023-11-21 22:15:08,525 INFO L226 Difference]: Without dead ends: 132 [2023-11-21 22:15:08,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:15:08,530 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:15:08,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 464 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-21 22:15:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-21 22:15:08,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-21 22:15:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 73 states have internal predecessors, (80), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2023-11-21 22:15:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 167 transitions. [2023-11-21 22:15:08,555 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 167 transitions. Word has length 95 [2023-11-21 22:15:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:15:08,556 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 167 transitions. [2023-11-21 22:15:08,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-21 22:15:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 167 transitions. [2023-11-21 22:15:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-21 22:15:08,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:15:08,560 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2023-11-21 22:15:08,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:15:08,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:15:08,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 225573613, now seen corresponding path program 1 times [2023-11-21 22:15:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180229716] [2023-11-21 22:15:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:08,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:15:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:15:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:15:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:15:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:15:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:15:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:15:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:15:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:15:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:15:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-21 22:15:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:15:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:15:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 22:15:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-21 22:15:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-21 22:15:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 22:15:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180229716] [2023-11-21 22:15:13,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180229716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:15:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141916412] [2023-11-21 22:15:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:13,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:15:13,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:13,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:15:13,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:15:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:14,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-21 22:15:14,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:15:14,922 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 [2023-11-21 22:15:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:15:15,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:15:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141916412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:15,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:15:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 18 [2023-11-21 22:15:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362846113] [2023-11-21 22:15:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:15,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:15:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:15:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:15:15,592 INFO L87 Difference]: Start difference. First operand 132 states and 167 transitions. Second operand has 11 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-21 22:15:22,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:24,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:26,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:28,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:30,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:32,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:35,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:37,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:39,653 WARN L539 Checker$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] [2023-11-21 22:15:41,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:15:43,682 WARN L539 Checker$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] [2023-11-21 22:15:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:15:43,737 INFO L93 Difference]: Finished difference Result 283 states and 342 transitions. [2023-11-21 22:15:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:15:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 104 [2023-11-21 22:15:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:15:43,742 INFO L225 Difference]: With dead ends: 283 [2023-11-21 22:15:43,743 INFO L226 Difference]: Without dead ends: 190 [2023-11-21 22:15:43,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:15:43,745 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 74 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 6 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:15:43,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1218 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 486 Invalid, 11 Unknown, 0 Unchecked, 27.9s Time] [2023-11-21 22:15:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-21 22:15:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-21 22:15:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 108 states have internal predecessors, (120), 55 states have call successors, (55), 27 states have call predecessors, (55), 29 states have return successors, (55), 55 states have call predecessors, (55), 53 states have call successors, (55) [2023-11-21 22:15:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 230 transitions. [2023-11-21 22:15:43,820 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 230 transitions. Word has length 104 [2023-11-21 22:15:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:15:43,823 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 230 transitions. [2023-11-21 22:15:43,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-21 22:15:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 230 transitions. [2023-11-21 22:15:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-21 22:15:43,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:15:43,829 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2023-11-21 22:15:43,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:44,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08f7df8-b763-4752-9678-970ab65a0aa2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:15:44,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:15:44,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash -226706690, now seen corresponding path program 1 times [2023-11-21 22:15:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826885420] [2023-11-21 22:15:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:44,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:15:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat