./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme --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 68433c6477b5e06e70f3328a0a460a3b00c9414f21416db6e1d4d6afbb3e8dfe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:58:29,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:58:29,675 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:58:29,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:58:29,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:58:29,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:58:29,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:58:29,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:58:29,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:58:29,710 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:58:29,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:58:29,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:58:29,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:58:29,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:58:29,713 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:58:29,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:58:29,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:58:29,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:58:29,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:58:29,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:58:29,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:58:29,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:58:29,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:58:29,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:58:29,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:58:29,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:58:29,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:58:29,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:58:29,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:29,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:58:29,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:58:29,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:58:29,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:58:29,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:58:29,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:58:29,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:58:29,724 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:58:29,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:58:29,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:58:29,725 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_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68433c6477b5e06e70f3328a0a460a3b00c9414f21416db6e1d4d6afbb3e8dfe [2023-11-26 11:58:29,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:58:30,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:58:30,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:58:30,019 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:58:30,019 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:58:30,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i [2023-11-26 11:58:33,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:58:34,022 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:58:34,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i [2023-11-26 11:58:34,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/data/d29d38789/40a39ecd20f245e9bb07d72bbd864cb3/FLAGc75c221c4 [2023-11-26 11:58:34,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/data/d29d38789/40a39ecd20f245e9bb07d72bbd864cb3 [2023-11-26 11:58:34,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:58:34,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:58:34,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:34,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:58:34,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:58:34,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:34" (1/1) ... [2023-11-26 11:58:34,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab0adb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:34, skipping insertion in model container [2023-11-26 11:58:34,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:34" (1/1) ... [2023-11-26 11:58:34,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:58:34,571 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_baa34e63-fc1e-423b-82a1-e5bc1a33f771/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i[4504,4517] [2023-11-26 11:58:34,581 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_baa34e63-fc1e-423b-82a1-e5bc1a33f771/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i[4564,4577] [2023-11-26 11:58:36,212 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,213 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,213 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,236 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,246 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,249 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,250 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:36,922 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:58:36,924 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:58:36,925 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:58:36,927 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:58:36,929 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:58:36,930 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:58:36,931 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:58:36,932 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:58:36,933 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:58:36,933 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:58:37,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,875 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,906 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,923 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,924 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,924 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,925 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,925 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:37,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:38,011 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:58:38,036 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_baa34e63-fc1e-423b-82a1-e5bc1a33f771/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i[4504,4517] [2023-11-26 11:58:38,037 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_baa34e63-fc1e-423b-82a1-e5bc1a33f771/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness_negated.i[4564,4577] [2023-11-26 11:58:38,102 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,116 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,118 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,119 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,119 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,163 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:58:38,165 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:58:38,166 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:58:38,167 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:58:38,168 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:58:38,169 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:58:38,170 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:58:38,170 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:58:38,171 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:58:38,172 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:58:38,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-26 11:58:38,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,344 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,365 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,366 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,366 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,367 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,367 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,367 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:58:38,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:38,798 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,798 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,799 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,799 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,799 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,799 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,799 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,799 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,800 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,800 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,800 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,801 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,801 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,801 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,801 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,801 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,801 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,802 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:38,810 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:58:38,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38 WrapperNode [2023-11-26 11:58:38,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:38,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:38,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:58:38,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:58:38,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:38,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,085 INFO L138 Inliner]: procedures = 772, calls = 2434, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 607 [2023-11-26 11:58:39,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:39,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:58:39,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:58:39,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:58:39,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,184 INFO L175 MemorySlicer]: Split 283 memory accesses to 9 slices as follows [7, 2, 5, 3, 236, 19, 2, 6, 3]. 83 percent of accesses are in the largest equivalence class. The 246 initializations are split as follows [0, 2, 5, 0, 236, 0, 0, 0, 3]. The 6 writes are split as follows [1, 0, 0, 1, 0, 1, 1, 2, 0]. [2023-11-26 11:58:39,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:58:39,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:58:39,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:58:39,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:58:39,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (1/1) ... [2023-11-26 11:58:39,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:39,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:39,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:58:39,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:58:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 11:58:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 11:58:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 11:58:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 11:58:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-26 11:58:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-26 11:58:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-26 11:58:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-26 11:58:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-26 11:58:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:58:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:58:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:58:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:58:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:58:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:58:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:58:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:58:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 11:58:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 11:58:39,413 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 11:58:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:58:39,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:58:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-26 11:58:39,414 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-26 11:58:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:58:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:58:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:58:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:58:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:58:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:58:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:58:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:58:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:58:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:58:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 11:58:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:58:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:58:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:58:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:58:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 11:58:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 11:58:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:58:39,418 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-26 11:58:39,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-26 11:58:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:58:39,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:58:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:58:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:58:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:58:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:58:39,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:58:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:58:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 11:58:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 11:58:39,421 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 11:58:39,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:58:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:58:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:58:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:58:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:58:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:58:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:58:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:58:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 11:58:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-26 11:58:39,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-26 11:58:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:58:39,436 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2023-11-26 11:58:39,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2023-11-26 11:58:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-26 11:58:39,437 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-26 11:58:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:58:39,437 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:58:39,437 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-26 11:58:39,438 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-26 11:58:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:58:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:58:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:58:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:58:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:58:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:58:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:58:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:58:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 11:58:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 11:58:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 11:58:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-26 11:58:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-26 11:58:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:58:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:58:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:58:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:58:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:58:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:58:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:58:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:58:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:58:39,896 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:58:39,902 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:58:40,716 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:58:40,833 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:58:40,833 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:58:40,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:40 BoogieIcfgContainer [2023-11-26 11:58:40,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:58:40,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:58:40,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:58:40,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:58:40,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:58:34" (1/3) ... [2023-11-26 11:58:40,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c1dbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:40, skipping insertion in model container [2023-11-26 11:58:40,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:38" (2/3) ... [2023-11-26 11:58:40,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c1dbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:40, skipping insertion in model container [2023-11-26 11:58:40,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:40" (3/3) ... [2023-11-26 11:58:40,846 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness_negated.i [2023-11-26 11:58:40,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:58:40,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:58:40,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:58:40,950 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;@71af2842, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:58:40,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:58:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:58:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 11:58:40,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:40,971 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:58:40,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:40,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -981689659, now seen corresponding path program 1 times [2023-11-26 11:58:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218252316] [2023-11-26 11:58:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:41,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550884887] [2023-11-26 11:58:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:41,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:41,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:41,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:58:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:42,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:58:42,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 11:58:42,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:42,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218252316] [2023-11-26 11:58:42,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550884887] [2023-11-26 11:58:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550884887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:42,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:58:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042639106] [2023-11-26 11:58:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:42,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:42,413 INFO L87 Difference]: Start difference. First operand has 101 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-26 11:58:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:42,900 INFO L93 Difference]: Finished difference Result 200 states and 266 transitions. [2023-11-26 11:58:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:42,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2023-11-26 11:58:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:42,912 INFO L225 Difference]: With dead ends: 200 [2023-11-26 11:58:42,912 INFO L226 Difference]: Without dead ends: 103 [2023-11-26 11:58:42,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:42,920 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:42,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 416 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:58:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-26 11:58:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-26 11:58:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-26 11:58:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2023-11-26 11:58:42,972 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 96 [2023-11-26 11:58:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:42,974 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2023-11-26 11:58:42,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-26 11:58:42,975 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2023-11-26 11:58:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 11:58:42,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:42,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:58:42,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:58:43,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:43,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1917411933, now seen corresponding path program 1 times [2023-11-26 11:58:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970125783] [2023-11-26 11:58:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:43,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:58:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:58:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:58:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:58:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:58:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:58:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:58:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:58:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 11:58:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 11:58:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-26 11:58:45,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970125783] [2023-11-26 11:58:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970125783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:45,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:45,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-26 11:58:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012125593] [2023-11-26 11:58:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:45,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:58:45,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:58:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:58:45,865 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-26 11:58:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:47,639 INFO L93 Difference]: Finished difference Result 200 states and 242 transitions. [2023-11-26 11:58:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:58:47,640 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 104 [2023-11-26 11:58:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:47,644 INFO L225 Difference]: With dead ends: 200 [2023-11-26 11:58:47,644 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 11:58:47,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:58:47,647 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 121 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:47,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 400 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:58:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 11:58:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2023-11-26 11:58:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 states have internal predecessors, (74), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-26 11:58:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2023-11-26 11:58:47,676 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 104 [2023-11-26 11:58:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:47,678 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2023-11-26 11:58:47,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-26 11:58:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2023-11-26 11:58:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 11:58:47,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:47,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:58:47,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:58:47,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:47,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash 10860769, now seen corresponding path program 1 times [2023-11-26 11:58:47,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490663518] [2023-11-26 11:58:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:58:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:58:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:58:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:58:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:58:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:58:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:58:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:58:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 11:58:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 11:58:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-26 11:58:48,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490663518] [2023-11-26 11:58:48,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490663518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:48,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:48,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:58:48,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550893710] [2023-11-26 11:58:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:48,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:58:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:58:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:58:48,662 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 11:58:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:49,484 INFO L93 Difference]: Finished difference Result 201 states and 242 transitions. [2023-11-26 11:58:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 104 [2023-11-26 11:58:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:49,487 INFO L225 Difference]: With dead ends: 201 [2023-11-26 11:58:49,487 INFO L226 Difference]: Without dead ends: 110 [2023-11-26 11:58:49,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:49,491 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 102 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:49,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 195 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:58:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-26 11:58:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2023-11-26 11:58:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-26 11:58:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2023-11-26 11:58:49,512 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 104 [2023-11-26 11:58:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:49,513 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2023-11-26 11:58:49,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-26 11:58:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2023-11-26 11:58:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 11:58:49,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:49,516 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:58:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:58:49,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:49,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1054343790, now seen corresponding path program 1 times [2023-11-26 11:58:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:49,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165629718] [2023-11-26 11:58:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:58:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:58:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:58:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:58:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:58:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:58:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:58:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:58:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 11:58:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 11:58:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 11:58:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-26 11:58:50,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:50,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165629718] [2023-11-26 11:58:50,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165629718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:50,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:50,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:58:50,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107690272] [2023-11-26 11:58:50,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:50,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:58:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:58:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:50,892 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-26 11:58:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:52,634 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2023-11-26 11:58:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:58:52,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 110 [2023-11-26 11:58:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:52,637 INFO L225 Difference]: With dead ends: 195 [2023-11-26 11:58:52,637 INFO L226 Difference]: Without dead ends: 110 [2023-11-26 11:58:52,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:58:52,639 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 60 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:52,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 371 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:58:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-26 11:58:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2023-11-26 11:58:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 62 states have internal predecessors, (69), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-26 11:58:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-11-26 11:58:52,678 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 110 [2023-11-26 11:58:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:52,680 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-26 11:58:52,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-26 11:58:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-11-26 11:58:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 11:58:52,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:52,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:58:52,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:58:52,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash 472843745, now seen corresponding path program 1 times [2023-11-26 11:58:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:52,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959711081] [2023-11-26 11:58:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:58:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:58:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:58:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:58:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:58:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:58:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:58:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:58:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 11:58:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 11:58:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 11:58:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 11:58:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:58:54,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:54,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959711081] [2023-11-26 11:58:54,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959711081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:54,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519805981] [2023-11-26 11:58:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:54,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:54,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:54,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:54,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:58:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:54,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-26 11:58:54,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-26 11:58:54,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519805981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:54,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:54,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 14 [2023-11-26 11:58:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18271412] [2023-11-26 11:58:54,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:54,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:58:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:58:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:58:54,995 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 8 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 11:58:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:55,594 INFO L93 Difference]: Finished difference Result 201 states and 236 transitions. [2023-11-26 11:58:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 116 [2023-11-26 11:58:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:55,596 INFO L225 Difference]: With dead ends: 201 [2023-11-26 11:58:55,596 INFO L226 Difference]: Without dead ends: 105 [2023-11-26 11:58:55,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:58:55,598 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 5 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:55,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 541 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:58:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-26 11:58:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-26 11:58:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 64 states have internal predecessors, (70), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-26 11:58:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2023-11-26 11:58:55,630 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 116 [2023-11-26 11:58:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:55,631 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2023-11-26 11:58:55,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 11:58:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2023-11-26 11:58:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-26 11:58:55,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:55,633 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1] [2023-11-26 11:58:55,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:55,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1887391290, now seen corresponding path program 1 times [2023-11-26 11:58:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675753615] [2023-11-26 11:58:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:58:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:58:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:58:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:58:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:58:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:58:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:58:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:58:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 11:58:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 11:58:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:58:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:58:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 11:58:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:58:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:58:57,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:57,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675753615] [2023-11-26 11:58:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675753615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289296232] [2023-11-26 11:58:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:57,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:57,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:57,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:57,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:58:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:57,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-26 11:58:57,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:58,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:58:58,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2023-11-26 11:58:58,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-11-26 11:58:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:58:59,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:59:00,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289296232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:00,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:59:00,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 26 [2023-11-26 11:59:00,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435845234] [2023-11-26 11:59:00,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:59:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:59:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:59:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:59:00,172 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 26 states, 22 states have (on average 4.409090909090909) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2023-11-26 11:59:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:06,265 INFO L93 Difference]: Finished difference Result 274 states and 316 transitions. [2023-11-26 11:59:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-26 11:59:06,266 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.409090909090909) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) Word has length 118 [2023-11-26 11:59:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:06,268 INFO L225 Difference]: With dead ends: 274 [2023-11-26 11:59:06,268 INFO L226 Difference]: Without dead ends: 165 [2023-11-26 11:59:06,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=381, Invalid=3041, Unknown=0, NotChecked=0, Total=3422 [2023-11-26 11:59:06,271 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 151 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:06,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 951 Invalid, 2109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-26 11:59:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-26 11:59:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 143. [2023-11-26 11:59:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 88 states have internal predecessors, (97), 32 states have call successors, (32), 22 states have call predecessors, (32), 23 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-26 11:59:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2023-11-26 11:59:06,296 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 118 [2023-11-26 11:59:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:06,297 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2023-11-26 11:59:06,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.409090909090909) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2023-11-26 11:59:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2023-11-26 11:59:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-26 11:59:06,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:06,299 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:06,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:06,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:59:06,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:06,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash 955548274, now seen corresponding path program 1 times [2023-11-26 11:59:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:06,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418941181] [2023-11-26 11:59:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:06,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:06,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:59:06,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642547826] [2023-11-26 11:59:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:06,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:06,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:06,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:59:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:07,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 11:59:07,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-26 11:59:07,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:59:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-26 11:59:07,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:07,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418941181] [2023-11-26 11:59:07,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:59:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642547826] [2023-11-26 11:59:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642547826] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:07,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:59:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-26 11:59:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113266415] [2023-11-26 11:59:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:07,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:59:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:07,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:59:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:59:07,780 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-26 11:59:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:08,467 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2023-11-26 11:59:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:59:08,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 126 [2023-11-26 11:59:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:08,469 INFO L225 Difference]: With dead ends: 192 [2023-11-26 11:59:08,470 INFO L226 Difference]: Without dead ends: 143 [2023-11-26 11:59:08,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:59:08,471 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:08,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 626 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:59:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-26 11:59:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2023-11-26 11:59:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 85 states have internal predecessors, (92), 32 states have call successors, (32), 22 states have call predecessors, (32), 22 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 11:59:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2023-11-26 11:59:08,493 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 126 [2023-11-26 11:59:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:08,494 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2023-11-26 11:59:08,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-26 11:59:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2023-11-26 11:59:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-26 11:59:08,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:08,497 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 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] [2023-11-26 11:59:08,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:08,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:08,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:08,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash 971917881, now seen corresponding path program 1 times [2023-11-26 11:59:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932626936] [2023-11-26 11:59:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:08,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:59:08,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438498230] [2023-11-26 11:59:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:08,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:08,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:08,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:59:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:10,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-26 11:59:10,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-26 11:59:11,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:59:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 11:59:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932626936] [2023-11-26 11:59:12,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:59:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438498230] [2023-11-26 11:59:12,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438498230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:59:12,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:59:12,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2023-11-26 11:59:12,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538522049] [2023-11-26 11:59:12,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:59:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-26 11:59:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-26 11:59:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:59:12,783 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand has 28 states, 22 states have (on average 4.181818181818182) internal successors, (92), 21 states have internal predecessors, (92), 7 states have call successors, (31), 3 states have call predecessors, (31), 9 states have return successors, (32), 9 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-26 11:59:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:15,996 INFO L93 Difference]: Finished difference Result 232 states and 257 transitions. [2023-11-26 11:59:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 11:59:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 4.181818181818182) internal successors, (92), 21 states have internal predecessors, (92), 7 states have call successors, (31), 3 states have call predecessors, (31), 9 states have return successors, (32), 9 states have call predecessors, (32), 7 states have call successors, (32) Word has length 132 [2023-11-26 11:59:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:16,005 INFO L225 Difference]: With dead ends: 232 [2023-11-26 11:59:16,005 INFO L226 Difference]: Without dead ends: 153 [2023-11-26 11:59:16,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 11:59:16,008 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 22 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:16,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1423 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-26 11:59:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-26 11:59:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2023-11-26 11:59:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 90 states have (on average 1.0888888888888888) internal successors, (98), 92 states have internal predecessors, (98), 32 states have call successors, (32), 22 states have call predecessors, (32), 25 states have return successors, (34), 33 states have call predecessors, (34), 31 states have call successors, (34) [2023-11-26 11:59:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2023-11-26 11:59:16,029 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 132 [2023-11-26 11:59:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:16,030 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2023-11-26 11:59:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 4.181818181818182) internal successors, (92), 21 states have internal predecessors, (92), 7 states have call successors, (31), 3 states have call predecessors, (31), 9 states have return successors, (32), 9 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-26 11:59:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2023-11-26 11:59:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-26 11:59:16,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:16,033 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1] [2023-11-26 11:59:16,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:16,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:16,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1986455566, now seen corresponding path program 1 times [2023-11-26 11:59:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:16,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729075391] [2023-11-26 11:59:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:16,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:16,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:59:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331884343] [2023-11-26 11:59:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:16,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:16,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:16,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:16,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa34e63-fc1e-423b-82a1-e5bc1a33f771/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:59:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:17,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 2595 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-26 11:59:17,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:17,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:59:17,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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