./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_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_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/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_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/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_c23bec84-7477-4832-a01c-dee6ea949a55/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 9b54145646e793b80ad32a5964acd9cb756fedabb3314a705fb95ff4eafdbb89 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:28,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:28,276 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 10:44:28,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:28,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:28,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:28,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:28,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:28,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:28,339 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:28,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:28,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:28,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:28,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:28,342 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:28,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:28,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:28,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:28,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:28,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:28,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:28,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:28,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:28,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:28,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:28,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:28,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:28,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:28,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:28,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:28,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:28,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:28,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:28,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:28,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:28,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:28,354 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:28,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:28,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:28,355 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_c23bec84-7477-4832-a01c-dee6ea949a55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b54145646e793b80ad32a5964acd9cb756fedabb3314a705fb95ff4eafdbb89 [2023-11-26 10:44:28,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:28,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:28,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:28,644 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:28,644 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:28,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i [2023-11-26 10:44:31,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:32,577 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:32,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i [2023-11-26 10:44:32,635 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/data/e1916eee8/7719832a4f614bea974aef67d24c736f/FLAG65fb7b44f [2023-11-26 10:44:32,655 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/data/e1916eee8/7719832a4f614bea974aef67d24c736f [2023-11-26 10:44:32,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:32,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:32,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:32,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:32,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:32,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:32" (1/1) ... [2023-11-26 10:44:32,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28300285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:32, skipping insertion in model container [2023-11-26 10:44:32,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:32" (1/1) ... [2023-11-26 10:44:32,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:33,347 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_c23bec84-7477-4832-a01c-dee6ea949a55/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4501,4514] [2023-11-26 10:44:33,358 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_c23bec84-7477-4832-a01c-dee6ea949a55/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4561,4574] [2023-11-26 10:44:34,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,625 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,626 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,628 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,630 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,652 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,655 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,656 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,657 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:34,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:35,243 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 10:44:35,245 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 10:44:35,257 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 10:44:35,258 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 10:44:35,260 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 10:44:35,261 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 10:44:35,262 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 10:44:35,262 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 10:44:35,263 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 10:44:35,264 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 10:44:35,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:35,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,030 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,035 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,043 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,044 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,107 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,108 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,109 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:36,229 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:36,251 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_c23bec84-7477-4832-a01c-dee6ea949a55/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4501,4514] [2023-11-26 10:44:36,251 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_c23bec84-7477-4832-a01c-dee6ea949a55/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness_negated.i[4561,4574] [2023-11-26 10:44:36,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,312 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,312 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,389 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 10:44:36,390 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 10:44:36,390 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 10:44:36,392 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 10:44:36,394 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 10:44:36,395 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 10:44:36,396 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 10:44:36,397 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 10:44:36,397 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 10:44:36,398 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 10:44:36,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2023-11-26 10:44:36,565 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,565 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,576 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:44:36,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:36,961 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,961 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,961 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,962 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,962 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,962 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,962 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,962 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,962 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,963 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,964 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,964 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:36,972 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:36,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36 WrapperNode [2023-11-26 10:44:36,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:36,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:36,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:36,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:36,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,248 INFO L138 Inliner]: procedures = 772, calls = 2432, calls flagged for inlining = 66, calls inlined = 13, statements flattened = 850 [2023-11-26 10:44:37,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:37,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:37,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:37,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:37,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,362 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 10:44:37,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:37,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:37,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:37,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:37,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (1/1) ... [2023-11-26 10:44:37,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:37,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:37,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-26 10:44:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 10:44:37,568 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 10:44:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:44:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 10:44:37,569 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 10:44:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:44:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:44:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-26 10:44:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-26 10:44:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:44:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 10:44:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:37,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 10:44:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 10:44:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:44:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-26 10:44:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-26 10:44:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 10:44:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 10:44:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 10:44:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:44:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-26 10:44:37,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-26 10:44:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-26 10:44:37,575 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-26 10:44:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:44:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-26 10:44:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-26 10:44:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-26 10:44:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-26 10:44:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-26 10:44:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-26 10:44:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-26 10:44:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-26 10:44:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-26 10:44:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:44:37,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:44:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-26 10:44:37,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-26 10:44:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 10:44:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 10:44:37,579 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 10:44:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 10:44:37,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 10:44:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-26 10:44:37,581 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-26 10:44:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-26 10:44:37,581 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-26 10:44:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:44:37,924 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:37,927 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:39,741 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-26 10:44:39,763 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:39,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:39,890 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:44:39,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:39 BoogieIcfgContainer [2023-11-26 10:44:39,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:39,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:39,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:39,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:39,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:32" (1/3) ... [2023-11-26 10:44:39,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568d5e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:39, skipping insertion in model container [2023-11-26 10:44:39,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:36" (2/3) ... [2023-11-26 10:44:39,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568d5e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:39, skipping insertion in model container [2023-11-26 10:44:39,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:39" (3/3) ... [2023-11-26 10:44:39,900 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness_negated.i [2023-11-26 10:44:39,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:39,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:39,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:39,996 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;@51cd8bd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:39,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 117 states have internal predecessors, (156), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-26 10:44:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 10:44:40,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:40,031 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:40,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:40,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1345492561, now seen corresponding path program 1 times [2023-11-26 10:44:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341720141] [2023-11-26 10:44:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341720141] [2023-11-26 10:44:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341720141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:40,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:40,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:40,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359195506] [2023-11-26 10:44:40,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:40,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:41,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:41,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:41,014 INFO L87 Difference]: Start difference. First operand has 176 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 117 states have internal predecessors, (156), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 10:44:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:41,955 INFO L93 Difference]: Finished difference Result 346 states and 481 transitions. [2023-11-26 10:44:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:41,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 72 [2023-11-26 10:44:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:41,975 INFO L225 Difference]: With dead ends: 346 [2023-11-26 10:44:41,976 INFO L226 Difference]: Without dead ends: 174 [2023-11-26 10:44:41,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:41,994 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 46 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:41,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 253 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:44:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-26 10:44:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2023-11-26 10:44:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 113 states have (on average 1.3008849557522124) internal successors, (147), 114 states have internal predecessors, (147), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 10:44:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2023-11-26 10:44:42,082 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 72 [2023-11-26 10:44:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:42,085 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2023-11-26 10:44:42,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 10:44:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2023-11-26 10:44:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 10:44:42,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:42,096 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:42,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:42,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:42,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash -521263435, now seen corresponding path program 1 times [2023-11-26 10:44:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:42,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891025494] [2023-11-26 10:44:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:42,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:42,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891025494] [2023-11-26 10:44:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891025494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:42,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:42,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949542991] [2023-11-26 10:44:42,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:43,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:43,005 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 10:44:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:43,941 INFO L93 Difference]: Finished difference Result 304 states and 384 transitions. [2023-11-26 10:44:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:43,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 72 [2023-11-26 10:44:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:43,945 INFO L225 Difference]: With dead ends: 304 [2023-11-26 10:44:43,945 INFO L226 Difference]: Without dead ends: 180 [2023-11-26 10:44:43,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:43,948 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 52 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:43,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 536 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:44:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-26 10:44:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2023-11-26 10:44:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 115 states have (on average 1.2956521739130435) internal successors, (149), 116 states have internal predecessors, (149), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 10:44:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 226 transitions. [2023-11-26 10:44:43,971 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 226 transitions. Word has length 72 [2023-11-26 10:44:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:43,971 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 226 transitions. [2023-11-26 10:44:43,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 10:44:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 226 transitions. [2023-11-26 10:44:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 10:44:43,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:43,974 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:43,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:43,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:43,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1889890928, now seen corresponding path program 1 times [2023-11-26 10:44:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:43,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448215668] [2023-11-26 10:44:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:44:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448215668] [2023-11-26 10:44:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448215668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:44,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:44,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214819436] [2023-11-26 10:44:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:44,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:44,733 INFO L87 Difference]: Start difference. First operand 174 states and 226 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 10:44:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:45,577 INFO L93 Difference]: Finished difference Result 224 states and 282 transitions. [2023-11-26 10:44:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:45,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2023-11-26 10:44:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:45,581 INFO L225 Difference]: With dead ends: 224 [2023-11-26 10:44:45,584 INFO L226 Difference]: Without dead ends: 180 [2023-11-26 10:44:45,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:45,586 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 46 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:45,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 533 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:44:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-26 10:44:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2023-11-26 10:44:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 118 states have (on average 1.2881355932203389) internal successors, (152), 119 states have internal predecessors, (152), 39 states have call successors, (39), 19 states have call predecessors, (39), 20 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2023-11-26 10:44:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2023-11-26 10:44:45,615 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 74 [2023-11-26 10:44:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:45,616 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2023-11-26 10:44:45,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 10:44:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2023-11-26 10:44:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 10:44:45,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:45,618 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:45,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:45,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -357859826, now seen corresponding path program 1 times [2023-11-26 10:44:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:45,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5836066] [2023-11-26 10:44:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:44:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:46,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:46,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5836066] [2023-11-26 10:44:46,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5836066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:46,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998407903] [2023-11-26 10:44:46,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:46,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:46,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:46,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:46,167 INFO L87 Difference]: Start difference. First operand 178 states and 230 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-26 10:44:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:47,191 INFO L93 Difference]: Finished difference Result 265 states and 344 transitions. [2023-11-26 10:44:47,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:47,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2023-11-26 10:44:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:47,195 INFO L225 Difference]: With dead ends: 265 [2023-11-26 10:44:47,195 INFO L226 Difference]: Without dead ends: 221 [2023-11-26 10:44:47,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:47,196 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 126 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:47,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 551 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-26 10:44:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 174. [2023-11-26 10:44:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 116 states have internal predecessors, (147), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 10:44:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2023-11-26 10:44:47,219 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 77 [2023-11-26 10:44:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:47,220 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2023-11-26 10:44:47,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-26 10:44:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2023-11-26 10:44:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:44:47,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:47,222 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:47,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:44:47,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:47,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1020898833, now seen corresponding path program 1 times [2023-11-26 10:44:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638752029] [2023-11-26 10:44:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686973466] [2023-11-26 10:44:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:47,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:47,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:44:48,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:48,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638752029] [2023-11-26 10:44:48,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686973466] [2023-11-26 10:44:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686973466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:48,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:48,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324495969] [2023-11-26 10:44:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:48,055 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 10:44:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:48,179 INFO L93 Difference]: Finished difference Result 279 states and 351 transitions. [2023-11-26 10:44:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2023-11-26 10:44:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:48,182 INFO L225 Difference]: With dead ends: 279 [2023-11-26 10:44:48,183 INFO L226 Difference]: Without dead ends: 178 [2023-11-26 10:44:48,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:48,184 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 816 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-26 10:44:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-11-26 10:44:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 118 states have (on average 1.271186440677966) internal successors, (150), 119 states have internal predecessors, (150), 39 states have call successors, (39), 19 states have call predecessors, (39), 20 states have return successors, (41), 39 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-26 10:44:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2023-11-26 10:44:48,203 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 94 [2023-11-26 10:44:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:48,204 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2023-11-26 10:44:48,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 10:44:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2023-11-26 10:44:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 10:44:48,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:48,206 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:48,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:48,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:48,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:48,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:48,418 INFO L85 PathProgramCache]: Analyzing trace with hash 236132196, now seen corresponding path program 1 times [2023-11-26 10:44:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383803811] [2023-11-26 10:44:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:48,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:44:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:50,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383803811] [2023-11-26 10:44:50,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383803811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:50,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:50,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:44:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334366474] [2023-11-26 10:44:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:50,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:44:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:44:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:50,145 INFO L87 Difference]: Start difference. First operand 178 states and 230 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:44:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:53,452 INFO L93 Difference]: Finished difference Result 270 states and 350 transitions. [2023-11-26 10:44:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:44:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-11-26 10:44:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:53,456 INFO L225 Difference]: With dead ends: 270 [2023-11-26 10:44:53,456 INFO L226 Difference]: Without dead ends: 224 [2023-11-26 10:44:53,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:44:53,458 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 238 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:53,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 879 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 10:44:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-26 10:44:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 182. [2023-11-26 10:44:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 123 states have internal predecessors, (154), 39 states have call successors, (39), 19 states have call predecessors, (39), 21 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2023-11-26 10:44:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 235 transitions. [2023-11-26 10:44:53,479 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 235 transitions. Word has length 98 [2023-11-26 10:44:53,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:53,479 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 235 transitions. [2023-11-26 10:44:53,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:44:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 235 transitions. [2023-11-26 10:44:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 10:44:53,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:53,482 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:53,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:44:53,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:53,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:53,483 INFO L85 PathProgramCache]: Analyzing trace with hash 916190566, now seen corresponding path program 1 times [2023-11-26 10:44:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:53,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918611488] [2023-11-26 10:44:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:53,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:44:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:54,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918611488] [2023-11-26 10:44:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918611488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:44:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206397886] [2023-11-26 10:44:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:54,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:44:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:44:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:54,423 INFO L87 Difference]: Start difference. First operand 182 states and 235 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:44:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:55,535 INFO L93 Difference]: Finished difference Result 275 states and 356 transitions. [2023-11-26 10:44:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-11-26 10:44:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:55,538 INFO L225 Difference]: With dead ends: 275 [2023-11-26 10:44:55,539 INFO L226 Difference]: Without dead ends: 225 [2023-11-26 10:44:55,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:55,540 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 216 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:55,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 543 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-26 10:44:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2023-11-26 10:44:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 124 states have internal predecessors, (155), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2023-11-26 10:44:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2023-11-26 10:44:55,559 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 98 [2023-11-26 10:44:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:55,560 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2023-11-26 10:44:55,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-26 10:44:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2023-11-26 10:44:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 10:44:55,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:55,562 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:44:55,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:55,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1391602319, now seen corresponding path program 1 times [2023-11-26 10:44:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859475433] [2023-11-26 10:44:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:44:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:44:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:44:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:44:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859475433] [2023-11-26 10:44:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859475433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-26 10:44:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606400547] [2023-11-26 10:44:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:44:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:44:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:44:57,653 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 13 states, 12 states have (on average 4.25) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-26 10:45:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:00,967 INFO L93 Difference]: Finished difference Result 288 states and 376 transitions. [2023-11-26 10:45:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:45:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 104 [2023-11-26 10:45:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:00,970 INFO L225 Difference]: With dead ends: 288 [2023-11-26 10:45:00,971 INFO L226 Difference]: Without dead ends: 234 [2023-11-26 10:45:00,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:45:00,972 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 229 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:00,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1307 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 10:45:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-26 10:45:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 184. [2023-11-26 10:45:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 124 states have internal predecessors, (154), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2023-11-26 10:45:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 237 transitions. [2023-11-26 10:45:00,990 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 237 transitions. Word has length 104 [2023-11-26 10:45:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:00,990 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 237 transitions. [2023-11-26 10:45:00,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-26 10:45:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 237 transitions. [2023-11-26 10:45:00,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 10:45:00,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:00,993 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:45:00,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:00,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash 692746047, now seen corresponding path program 1 times [2023-11-26 10:45:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:00,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809057237] [2023-11-26 10:45:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:00,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:45:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:45:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:45:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:45:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:45:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:45:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:45:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:45:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:45:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:45:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:45:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:45:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:45:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:45:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:45:03,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809057237] [2023-11-26 10:45:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809057237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:03,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:03,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 10:45:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866753673] [2023-11-26 10:45:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:03,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:45:03,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:45:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:45:03,366 INFO L87 Difference]: Start difference. First operand 184 states and 237 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 10:45:07,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:07,295 INFO L93 Difference]: Finished difference Result 284 states and 364 transitions. [2023-11-26 10:45:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:45:07,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 110 [2023-11-26 10:45:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:07,298 INFO L225 Difference]: With dead ends: 284 [2023-11-26 10:45:07,298 INFO L226 Difference]: Without dead ends: 225 [2023-11-26 10:45:07,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:45:07,300 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 224 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:07,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1155 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-26 10:45:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-26 10:45:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2023-11-26 10:45:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 124 states have internal predecessors, (152), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2023-11-26 10:45:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2023-11-26 10:45:07,329 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 110 [2023-11-26 10:45:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:07,330 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2023-11-26 10:45:07,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 10:45:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2023-11-26 10:45:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 10:45:07,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:07,334 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:07,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:45:07,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:07,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash -516042374, now seen corresponding path program 1 times [2023-11-26 10:45:07,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:07,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334831251] [2023-11-26 10:45:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:07,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:07,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334831251] [2023-11-26 10:45:07,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:45:07,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650790599] [2023-11-26 10:45:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:07,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:07,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:07,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:07,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:45:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:08,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:08,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-26 10:45:08,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650790599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819571154] [2023-11-26 10:45:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:08,412 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-26 10:45:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:08,512 INFO L93 Difference]: Finished difference Result 293 states and 363 transitions. [2023-11-26 10:45:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 141 [2023-11-26 10:45:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:08,515 INFO L225 Difference]: With dead ends: 293 [2023-11-26 10:45:08,515 INFO L226 Difference]: Without dead ends: 184 [2023-11-26 10:45:08,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:08,517 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:08,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 611 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-26 10:45:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2023-11-26 10:45:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 121 states have internal predecessors, (147), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-26 10:45:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2023-11-26 10:45:08,545 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 141 [2023-11-26 10:45:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:08,545 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2023-11-26 10:45:08,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-26 10:45:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2023-11-26 10:45:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-26 10:45:08,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:08,549 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:08,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:08,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:08,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:08,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2142960542, now seen corresponding path program 1 times [2023-11-26 10:45:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178317213] [2023-11-26 10:45:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:08,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:08,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:08,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831342295] [2023-11-26 10:45:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:08,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:08,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:08,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:08,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:45:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:09,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:45:09,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-26 10:45:09,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178317213] [2023-11-26 10:45:09,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831342295] [2023-11-26 10:45:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831342295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:09,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110220524] [2023-11-26 10:45:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:09,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:45:09,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:45:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:09,851 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-26 10:45:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:09,976 INFO L93 Difference]: Finished difference Result 243 states and 301 transitions. [2023-11-26 10:45:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:09,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 147 [2023-11-26 10:45:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:09,979 INFO L225 Difference]: With dead ends: 243 [2023-11-26 10:45:09,979 INFO L226 Difference]: Without dead ends: 184 [2023-11-26 10:45:09,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:09,980 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:09,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 794 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-26 10:45:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-26 10:45:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2295081967213115) internal successors, (150), 124 states have internal predecessors, (150), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2023-11-26 10:45:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2023-11-26 10:45:09,995 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 147 [2023-11-26 10:45:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:09,995 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2023-11-26 10:45:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-26 10:45:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2023-11-26 10:45:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-26 10:45:09,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:09,998 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:10,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:10,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:10,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:10,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:10,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1549314293, now seen corresponding path program 1 times [2023-11-26 10:45:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036998617] [2023-11-26 10:45:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:10,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516903601] [2023-11-26 10:45:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:10,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:10,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:10,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:45:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:11,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:45:11,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-26 10:45:11,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:11,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036998617] [2023-11-26 10:45:11,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516903601] [2023-11-26 10:45:11,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516903601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:11,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:11,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:11,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734017911] [2023-11-26 10:45:11,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:11,272 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-26 10:45:11,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:11,799 INFO L93 Difference]: Finished difference Result 243 states and 300 transitions. [2023-11-26 10:45:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:11,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 151 [2023-11-26 10:45:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:11,802 INFO L225 Difference]: With dead ends: 243 [2023-11-26 10:45:11,802 INFO L226 Difference]: Without dead ends: 184 [2023-11-26 10:45:11,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:11,803 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:11,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 600 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:45:11,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-26 10:45:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2023-11-26 10:45:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.226890756302521) internal successors, (146), 121 states have internal predecessors, (146), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-26 10:45:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 226 transitions. [2023-11-26 10:45:11,818 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 226 transitions. Word has length 151 [2023-11-26 10:45:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:11,819 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 226 transitions. [2023-11-26 10:45:11,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-26 10:45:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 226 transitions. [2023-11-26 10:45:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-26 10:45:11,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:11,822 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:11,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 10:45:12,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1729996030, now seen corresponding path program 1 times [2023-11-26 10:45:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:12,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632408403] [2023-11-26 10:45:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:12,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:12,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848553497] [2023-11-26 10:45:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:12,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:12,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:12,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:12,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:45:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:13,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-26 10:45:13,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-26 10:45:13,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:13,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632408403] [2023-11-26 10:45:13,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848553497] [2023-11-26 10:45:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848553497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:13,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:45:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735119977] [2023-11-26 10:45:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:13,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:45:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:45:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:45:13,283 INFO L87 Difference]: Start difference. First operand 180 states and 226 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 10:45:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:14,180 INFO L93 Difference]: Finished difference Result 247 states and 302 transitions. [2023-11-26 10:45:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:45:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 158 [2023-11-26 10:45:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:14,183 INFO L225 Difference]: With dead ends: 247 [2023-11-26 10:45:14,184 INFO L226 Difference]: Without dead ends: 178 [2023-11-26 10:45:14,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:45:14,185 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 4 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:14,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1954 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:45:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-26 10:45:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-11-26 10:45:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 120 states have internal predecessors, (143), 39 states have call successors, (39), 19 states have call predecessors, (39), 20 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2023-11-26 10:45:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 221 transitions. [2023-11-26 10:45:14,200 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 221 transitions. Word has length 158 [2023-11-26 10:45:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:14,201 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 221 transitions. [2023-11-26 10:45:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-26 10:45:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 221 transitions. [2023-11-26 10:45:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-26 10:45:14,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:14,204 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:14,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:14,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:14,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:14,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash -2133658035, now seen corresponding path program 1 times [2023-11-26 10:45:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757882312] [2023-11-26 10:45:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:14,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:14,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691243827] [2023-11-26 10:45:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:14,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:14,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:14,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:45:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-26 10:45:15,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-26 10:45:15,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-26 10:45:16,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:16,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757882312] [2023-11-26 10:45:16,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:16,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691243827] [2023-11-26 10:45:16,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691243827] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:16,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:16,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 22 [2023-11-26 10:45:16,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879952655] [2023-11-26 10:45:16,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:16,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:45:16,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:16,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:45:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-11-26 10:45:16,544 INFO L87 Difference]: Start difference. First operand 178 states and 221 transitions. Second operand has 12 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 10:45:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:16,904 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2023-11-26 10:45:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:45:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) Word has length 179 [2023-11-26 10:45:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:16,906 INFO L225 Difference]: With dead ends: 198 [2023-11-26 10:45:16,907 INFO L226 Difference]: Without dead ends: 196 [2023-11-26 10:45:16,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2023-11-26 10:45:16,908 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 7 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:16,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2088 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:45:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-26 10:45:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2023-11-26 10:45:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 129 states have internal predecessors, (151), 40 states have call successors, (40), 20 states have call predecessors, (40), 24 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2023-11-26 10:45:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 236 transitions. [2023-11-26 10:45:16,924 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 236 transitions. Word has length 179 [2023-11-26 10:45:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:16,925 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 236 transitions. [2023-11-26 10:45:16,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 10:45:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 236 transitions. [2023-11-26 10:45:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-26 10:45:16,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:16,928 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:16,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23bec84-7477-4832-a01c-dee6ea949a55/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0