./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:16:01,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:16:01,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:16:02,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:16:02,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:16:02,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:16:02,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:16:02,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:16:02,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:16:02,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:16:02,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:16:02,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:16:02,060 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:16:02,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:16:02,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:16:02,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:16:02,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:16:02,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:16:02,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:16:02,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:16:02,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:16:02,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:16:02,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:16:02,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:16:02,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:16:02,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:16:02,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:16:02,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:16:02,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:16:02,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:16:02,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:16:02,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:16:02,071 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:16:02,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:16:02,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:16:02,072 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:16:02,072 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_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2023-11-06 22:16:02,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:16:02,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:16:02,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:16:02,450 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:16:02,450 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:16:02,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-06 22:16:05,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:16:06,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:16:06,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-06 22:16:06,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/data/ea8a7df08/97480e7d87d74977bd2c8f3bb45a29da/FLAG6f5817ef4 [2023-11-06 22:16:06,365 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/data/ea8a7df08/97480e7d87d74977bd2c8f3bb45a29da [2023-11-06 22:16:06,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:16:06,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:16:06,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:06,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:16:06,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:16:06,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:06" (1/1) ... [2023-11-06 22:16:06,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7956698d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:06, skipping insertion in model container [2023-11-06 22:16:06,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:06" (1/1) ... [2023-11-06 22:16:06,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:16:06,804 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_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-06 22:16:06,816 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_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-06 22:16:08,190 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,191 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,191 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,192 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,194 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,210 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,211 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,213 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,214 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,216 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,218 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,219 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,219 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:08,709 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:16:08,718 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:16:08,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:16:08,724 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:16:08,726 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:16:08,728 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:16:08,730 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:16:08,731 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:16:08,732 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:16:08,749 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:16:09,009 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,034 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,101 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,102 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,103 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,103 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,103 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,104 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,105 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,105 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,106 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,106 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,107 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,107 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,108 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,111 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,112 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,112 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,113 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,117 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,118 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,127 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,128 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,128 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:09,182 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:16:09,196 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_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-06 22:16:09,197 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_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-06 22:16:09,236 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,237 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,237 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,238 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,238 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,245 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,246 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,247 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,248 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,249 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,250 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,251 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,251 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,303 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:16:09,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:16:09,308 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:16:09,309 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:16:09,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:16:09,314 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:16:09,314 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:16:09,315 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:16:09,316 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:16:09,316 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:16:09,364 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,370 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-06 22:16:09,404 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,408 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,409 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,409 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,409 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,410 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,411 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,411 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,412 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,412 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,412 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,413 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,413 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,414 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,415 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,416 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,416 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,422 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,423 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,434 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,435 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,436 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:16:09,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:09,816 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,817 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,817 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,817 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,817 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,818 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,818 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,818 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,818 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,819 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,820 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,820 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,821 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,821 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,821 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:09,829 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:16:09,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09 WrapperNode [2023-11-06 22:16:09,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:09,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:09,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:16:09,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:16:09,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:09,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,087 INFO L138 Inliner]: procedures = 696, calls = 1880, calls flagged for inlining = 60, calls inlined = 19, statements flattened = 1165 [2023-11-06 22:16:10,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:10,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:16:10,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:16:10,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:16:10,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,171 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:16:10,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:16:10,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:16:10,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:16:10,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (1/1) ... [2023-11-06 22:16:10,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:16:10,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:10,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:10,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:16:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-06 22:16:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-06 22:16:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-11-06 22:16:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-11-06 22:16:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-06 22:16:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-06 22:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-06 22:16:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-06 22:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-06 22:16:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-06 22:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-06 22:16:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-06 22:16:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-06 22:16:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-06 22:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-06 22:16:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-06 22:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-06 22:16:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-06 22:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:16:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:16:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-06 22:16:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-06 22:16:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-06 22:16:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-06 22:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:16:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-06 22:16:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-06 22:16:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-06 22:16:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-06 22:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-06 22:16:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-06 22:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-06 22:16:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-06 22:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-06 22:16:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-06 22:16:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-06 22:16:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-06 22:16:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:16:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:16:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:16:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:16:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-06 22:16:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-06 22:16:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-06 22:16:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-06 22:16:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-06 22:16:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-06 22:16:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:16:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-06 22:16:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-06 22:16:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:16:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:16:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-06 22:16:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-06 22:16:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-06 22:16:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-06 22:16:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-06 22:16:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-06 22:16:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-06 22:16:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-06 22:16:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:16:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-06 22:16:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-06 22:16:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-06 22:16:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-06 22:16:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-06 22:16:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-06 22:16:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:16:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:16:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:16:10,820 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:16:10,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:16:12,413 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:16:12,426 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:16:12,426 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:16:12,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:12 BoogieIcfgContainer [2023-11-06 22:16:12,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:16:12,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:16:12,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:16:12,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:16:12,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:16:06" (1/3) ... [2023-11-06 22:16:12,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f57e341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:12, skipping insertion in model container [2023-11-06 22:16:12,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:09" (2/3) ... [2023-11-06 22:16:12,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f57e341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:12, skipping insertion in model container [2023-11-06 22:16:12,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:12" (3/3) ... [2023-11-06 22:16:12,438 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2023-11-06 22:16:12,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:16:12,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:16:12,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:16:12,542 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=LoopsAndPotentialCycles, 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;@5c4ef530, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:16:12,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:16:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 538 states, 308 states have (on average 1.2467532467532467) internal successors, (384), 311 states have internal predecessors, (384), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-06 22:16:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:16:12,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:12,571 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:12,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:12,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1275257579, now seen corresponding path program 1 times [2023-11-06 22:16:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:12,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323432787] [2023-11-06 22:16:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:16:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:16:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:16:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:16:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:16:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 22:16:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:16:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:16:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:16:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:16:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 22:16:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:16:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:16:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 22:16:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 22:16:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:16:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 22:16:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:16:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:16:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 22:16:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-06 22:16:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-06 22:16:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-11-06 22:16:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323432787] [2023-11-06 22:16:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323432787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:16:14,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521027875] [2023-11-06 22:16:14,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:16:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:16:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:14,103 INFO L87 Difference]: Start difference. First operand has 538 states, 308 states have (on average 1.2467532467532467) internal successors, (384), 311 states have internal predecessors, (384), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-06 22:16:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:16,797 INFO L93 Difference]: Finished difference Result 1222 states and 2027 transitions. [2023-11-06 22:16:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:16:16,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2023-11-06 22:16:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:16,824 INFO L225 Difference]: With dead ends: 1222 [2023-11-06 22:16:16,824 INFO L226 Difference]: Without dead ends: 690 [2023-11-06 22:16:16,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:16,840 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 200 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:16,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1133 Invalid, 1016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:16:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-11-06 22:16:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 531. [2023-11-06 22:16:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 302 states have (on average 1.228476821192053) internal successors, (371), 304 states have internal predecessors, (371), 196 states have call successors, (196), 32 states have call predecessors, (196), 31 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2023-11-06 22:16:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 761 transitions. [2023-11-06 22:16:16,995 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 761 transitions. Word has length 167 [2023-11-06 22:16:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:16,996 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 761 transitions. [2023-11-06 22:16:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-06 22:16:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 761 transitions. [2023-11-06 22:16:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-06 22:16:17,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:17,011 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:17,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:16:17,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:17,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1164316567, now seen corresponding path program 1 times [2023-11-06 22:16:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:17,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167996283] [2023-11-06 22:16:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:16:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:16:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:16:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:16:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:16:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 22:16:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:16:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:16:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:16:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:16:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 22:16:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:16:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:16:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 22:16:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 22:16:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:16:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 22:16:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:16:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:16:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 22:16:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-06 22:16:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-06 22:16:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-11-06 22:16:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167996283] [2023-11-06 22:16:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167996283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181788346] [2023-11-06 22:16:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:18,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:18,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:18,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:16:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:18,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:16:18,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-06 22:16:18,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181788346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:18,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:16:18,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-06 22:16:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157078757] [2023-11-06 22:16:18,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:18,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:16:18,916 INFO L87 Difference]: Start difference. First operand 531 states and 761 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-06 22:16:19,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:19,518 INFO L93 Difference]: Finished difference Result 1031 states and 1490 transitions. [2023-11-06 22:16:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:16:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2023-11-06 22:16:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:19,531 INFO L225 Difference]: With dead ends: 1031 [2023-11-06 22:16:19,531 INFO L226 Difference]: Without dead ends: 533 [2023-11-06 22:16:19,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:16:19,538 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 787 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:19,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2660 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:16:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-06 22:16:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2023-11-06 22:16:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 303 states have (on average 1.2277227722772277) internal successors, (372), 306 states have internal predecessors, (372), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (204), 194 states have call predecessors, (204), 194 states have call successors, (204) [2023-11-06 22:16:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 772 transitions. [2023-11-06 22:16:19,649 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 772 transitions. Word has length 167 [2023-11-06 22:16:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:19,652 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 772 transitions. [2023-11-06 22:16:19,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-06 22:16:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 772 transitions. [2023-11-06 22:16:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-06 22:16:19,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:19,659 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:19,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:19,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:19,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1874982858, now seen corresponding path program 1 times [2023-11-06 22:16:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971335027] [2023-11-06 22:16:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:16:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:16:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:16:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:16:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:16:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:16:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 22:16:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:16:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:16:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:16:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:16:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:16:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 22:16:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 22:16:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-06 22:16:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-06 22:16:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-06 22:16:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 22:16:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-06 22:16:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:16:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-06 22:16:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-06 22:16:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-06 22:16:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-06 22:16:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-11-06 22:16:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971335027] [2023-11-06 22:16:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971335027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425169077] [2023-11-06 22:16:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:20,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:20,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:20,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:20,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:16:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:21,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:16:21,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-06 22:16:21,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:21,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425169077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:21,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:16:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-06 22:16:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139082229] [2023-11-06 22:16:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:16:21,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:16:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:16:21,795 INFO L87 Difference]: Start difference. First operand 533 states and 772 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-06 22:16:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:22,726 INFO L93 Difference]: Finished difference Result 1054 states and 1570 transitions. [2023-11-06 22:16:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:16:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 175 [2023-11-06 22:16:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:22,734 INFO L225 Difference]: With dead ends: 1054 [2023-11-06 22:16:22,734 INFO L226 Difference]: Without dead ends: 554 [2023-11-06 22:16:22,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:16:22,740 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 827 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:22,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3780 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:16:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-06 22:16:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 552. [2023-11-06 22:16:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 319 states have (on average 1.2351097178683386) internal successors, (394), 322 states have internal predecessors, (394), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-06 22:16:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 830 transitions. [2023-11-06 22:16:22,814 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 830 transitions. Word has length 175 [2023-11-06 22:16:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:22,816 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 830 transitions. [2023-11-06 22:16:22,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-06 22:16:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 830 transitions. [2023-11-06 22:16:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:16:22,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:22,821 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:22,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:23,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:23,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:23,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash -189286359, now seen corresponding path program 1 times [2023-11-06 22:16:23,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:23,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724947529] [2023-11-06 22:16:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:23,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:23,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191557688] [2023-11-06 22:16:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:23,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:23,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:23,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:23,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:16:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:23,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:16:23,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-06 22:16:23,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:23,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724947529] [2023-11-06 22:16:23,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191557688] [2023-11-06 22:16:23,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191557688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:23,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:23,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:16:23,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638088483] [2023-11-06 22:16:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:23,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:16:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:16:23,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:16:23,971 INFO L87 Difference]: Start difference. First operand 552 states and 830 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:16:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:24,594 INFO L93 Difference]: Finished difference Result 1077 states and 1641 transitions. [2023-11-06 22:16:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:16:24,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 190 [2023-11-06 22:16:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:24,603 INFO L225 Difference]: With dead ends: 1077 [2023-11-06 22:16:24,604 INFO L226 Difference]: Without dead ends: 558 [2023-11-06 22:16:24,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:16:24,611 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 807 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:24,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 3298 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:16:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-06 22:16:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 552. [2023-11-06 22:16:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 319 states have (on average 1.2351097178683386) internal successors, (394), 322 states have internal predecessors, (394), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-06 22:16:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 830 transitions. [2023-11-06 22:16:24,677 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 830 transitions. Word has length 190 [2023-11-06 22:16:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:24,678 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 830 transitions. [2023-11-06 22:16:24,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:16:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 830 transitions. [2023-11-06 22:16:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-06 22:16:24,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:24,682 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:24,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:24,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:24,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:24,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash 782680933, now seen corresponding path program 1 times [2023-11-06 22:16:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128147928] [2023-11-06 22:16:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:24,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:24,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635155800] [2023-11-06 22:16:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:24,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:24,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:25,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:16:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:25,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:16:25,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-06 22:16:25,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128147928] [2023-11-06 22:16:25,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635155800] [2023-11-06 22:16:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635155800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:25,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:25,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:16:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130750010] [2023-11-06 22:16:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:25,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:16:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:16:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:25,906 INFO L87 Difference]: Start difference. First operand 552 states and 830 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-06 22:16:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:27,000 INFO L93 Difference]: Finished difference Result 1087 states and 1648 transitions. [2023-11-06 22:16:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:16:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 206 [2023-11-06 22:16:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:27,011 INFO L225 Difference]: With dead ends: 1087 [2023-11-06 22:16:27,011 INFO L226 Difference]: Without dead ends: 568 [2023-11-06 22:16:27,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:16:27,017 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 857 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:27,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 4367 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:16:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-06 22:16:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 552. [2023-11-06 22:16:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 319 states have (on average 1.2351097178683386) internal successors, (394), 322 states have internal predecessors, (394), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-06 22:16:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 830 transitions. [2023-11-06 22:16:27,080 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 830 transitions. Word has length 206 [2023-11-06 22:16:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:27,080 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 830 transitions. [2023-11-06 22:16:27,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-06 22:16:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 830 transitions. [2023-11-06 22:16:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-06 22:16:27,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:27,086 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:16:27,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:27,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:27,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:27,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1345372220, now seen corresponding path program 2 times [2023-11-06 22:16:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:27,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87315342] [2023-11-06 22:16:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:27,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:27,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130015902] [2023-11-06 22:16:27,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:16:27,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:27,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:27,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:16:28,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:16:28,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:28,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:16:28,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-06 22:16:28,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87315342] [2023-11-06 22:16:28,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:28,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130015902] [2023-11-06 22:16:28,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130015902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:28,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:28,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:16:28,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045625468] [2023-11-06 22:16:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:28,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:16:28,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:16:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:16:28,280 INFO L87 Difference]: Start difference. First operand 552 states and 830 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-06 22:16:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:28,857 INFO L93 Difference]: Finished difference Result 1065 states and 1612 transitions. [2023-11-06 22:16:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:16:28,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 221 [2023-11-06 22:16:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:28,867 INFO L225 Difference]: With dead ends: 1065 [2023-11-06 22:16:28,867 INFO L226 Difference]: Without dead ends: 554 [2023-11-06 22:16:28,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:16:28,873 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 838 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:28,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 3295 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:16:28,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-06 22:16:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2023-11-06 22:16:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 320 states have (on average 1.234375) internal successors, (395), 324 states have internal predecessors, (395), 198 states have call successors, (198), 32 states have call predecessors, (198), 34 states have return successors, (246), 197 states have call predecessors, (246), 196 states have call successors, (246) [2023-11-06 22:16:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 839 transitions. [2023-11-06 22:16:28,937 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 839 transitions. Word has length 221 [2023-11-06 22:16:28,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:28,938 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 839 transitions. [2023-11-06 22:16:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-06 22:16:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 839 transitions. [2023-11-06 22:16:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-06 22:16:28,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:28,944 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:28,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:29,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:16:29,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:29,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash 105838001, now seen corresponding path program 1 times [2023-11-06 22:16:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:29,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922282206] [2023-11-06 22:16:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:29,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:29,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102358149] [2023-11-06 22:16:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:29,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:29,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:29,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:16:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:30,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:16:30,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-06 22:16:30,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:30,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:30,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922282206] [2023-11-06 22:16:30,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:30,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102358149] [2023-11-06 22:16:30,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102358149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:30,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:30,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:16:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224555386] [2023-11-06 22:16:30,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:30,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:16:30,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:30,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:16:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:30,142 INFO L87 Difference]: Start difference. First operand 554 states and 839 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-06 22:16:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:31,226 INFO L93 Difference]: Finished difference Result 1083 states and 1650 transitions. [2023-11-06 22:16:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:16:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 229 [2023-11-06 22:16:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:31,234 INFO L225 Difference]: With dead ends: 1083 [2023-11-06 22:16:31,234 INFO L226 Difference]: Without dead ends: 570 [2023-11-06 22:16:31,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:16:31,240 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 881 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:31,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 4376 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:16:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-06 22:16:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 568. [2023-11-06 22:16:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 333 states have (on average 1.2402402402402402) internal successors, (413), 336 states have internal predecessors, (413), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2023-11-06 22:16:31,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 859 transitions. [2023-11-06 22:16:31,302 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 859 transitions. Word has length 229 [2023-11-06 22:16:31,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:31,302 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 859 transitions. [2023-11-06 22:16:31,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-06 22:16:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 859 transitions. [2023-11-06 22:16:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-06 22:16:31,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:31,308 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:31,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:31,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:16:31,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:31,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 225011944, now seen corresponding path program 2 times [2023-11-06 22:16:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:31,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333484818] [2023-11-06 22:16:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:31,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046882568] [2023-11-06 22:16:31,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:16:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:31,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:31,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:16:32,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:16:32,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:32,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 3025 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:16:32,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-06 22:16:32,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:32,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:32,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333484818] [2023-11-06 22:16:32,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:32,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046882568] [2023-11-06 22:16:32,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046882568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:32,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:32,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:16:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563510913] [2023-11-06 22:16:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:32,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:16:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:16:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:16:32,557 INFO L87 Difference]: Start difference. First operand 568 states and 859 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-06 22:16:33,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:33,280 INFO L93 Difference]: Finished difference Result 1101 states and 1681 transitions. [2023-11-06 22:16:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:16:33,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 244 [2023-11-06 22:16:33,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:33,288 INFO L225 Difference]: With dead ends: 1101 [2023-11-06 22:16:33,288 INFO L226 Difference]: Without dead ends: 574 [2023-11-06 22:16:33,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:16:33,294 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 858 mSDsluCounter, 3241 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:33,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 3925 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:16:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-06 22:16:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2023-11-06 22:16:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 333 states have (on average 1.2402402402402402) internal successors, (413), 336 states have internal predecessors, (413), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2023-11-06 22:16:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 859 transitions. [2023-11-06 22:16:33,348 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 859 transitions. Word has length 244 [2023-11-06 22:16:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:33,348 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 859 transitions. [2023-11-06 22:16:33,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-06 22:16:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 859 transitions. [2023-11-06 22:16:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-06 22:16:33,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:33,355 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:16:33,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:33,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:33,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:33,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash 965826231, now seen corresponding path program 3 times [2023-11-06 22:16:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:33,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018073981] [2023-11-06 22:16:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:33,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:33,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520098204] [2023-11-06 22:16:33,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:16:33,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:33,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:33,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:33,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:16:34,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:16:34,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:34,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:16:34,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-11-06 22:16:34,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018073981] [2023-11-06 22:16:34,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520098204] [2023-11-06 22:16:34,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520098204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:34,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:34,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:16:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578094647] [2023-11-06 22:16:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:34,377 INFO L87 Difference]: Start difference. First operand 568 states and 859 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-06 22:16:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:34,716 INFO L93 Difference]: Finished difference Result 1078 states and 1644 transitions. [2023-11-06 22:16:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:16:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 275 [2023-11-06 22:16:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:34,725 INFO L225 Difference]: With dead ends: 1078 [2023-11-06 22:16:34,725 INFO L226 Difference]: Without dead ends: 568 [2023-11-06 22:16:34,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:16:34,733 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 2 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:34,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3485 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:16:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-06 22:16:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-06 22:16:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 333 states have (on average 1.2402402402402402) internal successors, (413), 336 states have internal predecessors, (413), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (246), 199 states have call predecessors, (246), 197 states have call successors, (246) [2023-11-06 22:16:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 858 transitions. [2023-11-06 22:16:34,791 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 858 transitions. Word has length 275 [2023-11-06 22:16:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:34,792 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 858 transitions. [2023-11-06 22:16:34,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-06 22:16:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 858 transitions. [2023-11-06 22:16:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-11-06 22:16:34,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:34,825 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:34,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:35,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:35,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:35,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash -293826374, now seen corresponding path program 4 times [2023-11-06 22:16:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:35,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876705301] [2023-11-06 22:16:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:35,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:35,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:35,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508159515] [2023-11-06 22:16:35,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:16:35,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:35,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:35,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:35,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:16:35,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:16:35,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:35,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:16:35,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-06 22:16:35,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:35,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876705301] [2023-11-06 22:16:35,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508159515] [2023-11-06 22:16:35,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508159515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:16:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976078018] [2023-11-06 22:16:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:16:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:16:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:16:35,897 INFO L87 Difference]: Start difference. First operand 568 states and 858 transitions. Second operand has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-06 22:16:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:36,729 INFO L93 Difference]: Finished difference Result 1203 states and 1835 transitions. [2023-11-06 22:16:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:16:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 290 [2023-11-06 22:16:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:36,739 INFO L225 Difference]: With dead ends: 1203 [2023-11-06 22:16:36,739 INFO L226 Difference]: Without dead ends: 688 [2023-11-06 22:16:36,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:16:36,745 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 124 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5235 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:36,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5235 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:16:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-06 22:16:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 665. [2023-11-06 22:16:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 399 states have (on average 1.2656641604010026) internal successors, (505), 404 states have internal predecessors, (505), 228 states have call successors, (228), 33 states have call predecessors, (228), 36 states have return successors, (289), 227 states have call predecessors, (289), 226 states have call successors, (289) [2023-11-06 22:16:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1022 transitions. [2023-11-06 22:16:36,820 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1022 transitions. Word has length 290 [2023-11-06 22:16:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:36,821 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 1022 transitions. [2023-11-06 22:16:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-06 22:16:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1022 transitions. [2023-11-06 22:16:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-11-06 22:16:36,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:36,828 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:16:36,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:37,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:37,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1897424991, now seen corresponding path program 5 times [2023-11-06 22:16:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405117338] [2023-11-06 22:16:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:37,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:37,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208685800] [2023-11-06 22:16:37,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:16:37,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:37,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:37,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:16:37,656 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:16:37,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:37,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:16:37,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-06 22:16:37,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405117338] [2023-11-06 22:16:37,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208685800] [2023-11-06 22:16:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208685800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:37,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:37,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:16:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51029567] [2023-11-06 22:16:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:37,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:37,827 INFO L87 Difference]: Start difference. First operand 665 states and 1022 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:16:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:37,937 INFO L93 Difference]: Finished difference Result 1299 states and 2001 transitions. [2023-11-06 22:16:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:16:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 305 [2023-11-06 22:16:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:37,946 INFO L225 Difference]: With dead ends: 1299 [2023-11-06 22:16:37,946 INFO L226 Difference]: Without dead ends: 672 [2023-11-06 22:16:37,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:37,953 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:37,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3784 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-06 22:16:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 670. [2023-11-06 22:16:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 403 states have (on average 1.2630272952853598) internal successors, (509), 408 states have internal predecessors, (509), 228 states have call successors, (228), 33 states have call predecessors, (228), 37 states have return successors, (291), 228 states have call predecessors, (291), 226 states have call successors, (291) [2023-11-06 22:16:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1028 transitions. [2023-11-06 22:16:38,022 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1028 transitions. Word has length 305 [2023-11-06 22:16:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:38,023 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1028 transitions. [2023-11-06 22:16:38,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:16:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1028 transitions. [2023-11-06 22:16:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-11-06 22:16:38,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:38,027 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:38,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:38,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:16:38,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:38,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1863849176, now seen corresponding path program 1 times [2023-11-06 22:16:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810722892] [2023-11-06 22:16:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:38,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:38,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:38,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893757539] [2023-11-06 22:16:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:38,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:38,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:38,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:38,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:16:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:39,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:39,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-06 22:16:39,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:39,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:39,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810722892] [2023-11-06 22:16:39,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:39,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893757539] [2023-11-06 22:16:39,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893757539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:39,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:39,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:16:39,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195607572] [2023-11-06 22:16:39,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:39,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:16:39,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:16:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:16:39,606 INFO L87 Difference]: Start difference. First operand 670 states and 1028 transitions. Second operand has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 5 states have call predecessors, (33), 6 states have call successors, (33) [2023-11-06 22:16:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:40,906 INFO L93 Difference]: Finished difference Result 1313 states and 2018 transitions. [2023-11-06 22:16:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:16:40,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 5 states have call predecessors, (33), 6 states have call successors, (33) Word has length 290 [2023-11-06 22:16:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:40,915 INFO L225 Difference]: With dead ends: 1313 [2023-11-06 22:16:40,915 INFO L226 Difference]: Without dead ends: 686 [2023-11-06 22:16:40,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:16:40,922 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 908 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 4959 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:40,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 4959 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:16:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-06 22:16:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 654. [2023-11-06 22:16:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 389 states have (on average 1.2596401028277635) internal successors, (490), 394 states have internal predecessors, (490), 227 states have call successors, (227), 33 states have call predecessors, (227), 36 states have return successors, (280), 226 states have call predecessors, (280), 225 states have call successors, (280) [2023-11-06 22:16:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 997 transitions. [2023-11-06 22:16:40,995 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 997 transitions. Word has length 290 [2023-11-06 22:16:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:40,995 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 997 transitions. [2023-11-06 22:16:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 5 states have call predecessors, (33), 6 states have call successors, (33) [2023-11-06 22:16:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 997 transitions. [2023-11-06 22:16:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-06 22:16:40,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:40,999 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:16:41,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:16:41,214 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:41,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1928622034, now seen corresponding path program 1 times [2023-11-06 22:16:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533164962] [2023-11-06 22:16:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:41,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586068762] [2023-11-06 22:16:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:41,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:41,343 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:41,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:16:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:42,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 3567 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:42,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-11-06 22:16:42,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533164962] [2023-11-06 22:16:42,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586068762] [2023-11-06 22:16:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586068762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:42,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:16:42,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254354709] [2023-11-06 22:16:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:42,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:16:42,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:16:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:42,564 INFO L87 Difference]: Start difference. First operand 654 states and 997 transitions. Second operand has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-06 22:16:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:43,496 INFO L93 Difference]: Finished difference Result 1167 states and 1776 transitions. [2023-11-06 22:16:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:16:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 313 [2023-11-06 22:16:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:43,505 INFO L225 Difference]: With dead ends: 1167 [2023-11-06 22:16:43,506 INFO L226 Difference]: Without dead ends: 562 [2023-11-06 22:16:43,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:16:43,513 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 904 mSDsluCounter, 3858 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:43,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 4536 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:16:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-06 22:16:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 560. [2023-11-06 22:16:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 325 states have (on average 1.2307692307692308) internal successors, (400), 329 states have internal predecessors, (400), 198 states have call successors, (198), 32 states have call predecessors, (198), 35 states have return successors, (241), 198 states have call predecessors, (241), 196 states have call successors, (241) [2023-11-06 22:16:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 839 transitions. [2023-11-06 22:16:43,648 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 839 transitions. Word has length 313 [2023-11-06 22:16:43,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:43,651 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 839 transitions. [2023-11-06 22:16:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-06 22:16:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 839 transitions. [2023-11-06 22:16:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-06 22:16:43,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:43,655 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:43,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:43,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:16:43,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:43,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash -949280023, now seen corresponding path program 1 times [2023-11-06 22:16:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730150679] [2023-11-06 22:16:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:43,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:43,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:43,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318774347] [2023-11-06 22:16:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:43,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:43,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:43,992 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:44,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:16:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:45,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 3780 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:45,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2023-11-06 22:16:45,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:45,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:45,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730150679] [2023-11-06 22:16:45,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318774347] [2023-11-06 22:16:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318774347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:45,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:45,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:16:45,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075592969] [2023-11-06 22:16:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:45,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:16:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:16:45,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:45,154 INFO L87 Difference]: Start difference. First operand 560 states and 839 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2023-11-06 22:16:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:45,964 INFO L93 Difference]: Finished difference Result 1065 states and 1595 transitions. [2023-11-06 22:16:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:16:45,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 344 [2023-11-06 22:16:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:45,971 INFO L225 Difference]: With dead ends: 1065 [2023-11-06 22:16:45,971 INFO L226 Difference]: Without dead ends: 560 [2023-11-06 22:16:45,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:16:45,976 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 870 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 4383 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:45,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 4383 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:16:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-06 22:16:46,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2023-11-06 22:16:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 325 states have (on average 1.2307692307692308) internal successors, (400), 329 states have internal predecessors, (400), 198 states have call successors, (198), 32 states have call predecessors, (198), 35 states have return successors, (238), 198 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-06 22:16:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 836 transitions. [2023-11-06 22:16:46,024 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 836 transitions. Word has length 344 [2023-11-06 22:16:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:46,025 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 836 transitions. [2023-11-06 22:16:46,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2023-11-06 22:16:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 836 transitions. [2023-11-06 22:16:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-11-06 22:16:46,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:46,029 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:46,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:46,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:46,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:46,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1769307758, now seen corresponding path program 2 times [2023-11-06 22:16:46,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:46,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313103218] [2023-11-06 22:16:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:46,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:46,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499972768] [2023-11-06 22:16:46,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:16:46,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:46,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:46,423 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:46,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:16:47,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:16:47,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:16:47,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 3921 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:16:47,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2023-11-06 22:16:47,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:47,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:47,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313103218] [2023-11-06 22:16:47,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:47,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499972768] [2023-11-06 22:16:47,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499972768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:47,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:47,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:16:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113621908] [2023-11-06 22:16:47,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:16:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:16:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:16:47,672 INFO L87 Difference]: Start difference. First operand 560 states and 836 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 7 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2023-11-06 22:16:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:48,374 INFO L93 Difference]: Finished difference Result 1071 states and 1601 transitions. [2023-11-06 22:16:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:16:48,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 7 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) Word has length 359 [2023-11-06 22:16:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:48,382 INFO L225 Difference]: With dead ends: 1071 [2023-11-06 22:16:48,382 INFO L226 Difference]: Without dead ends: 572 [2023-11-06 22:16:48,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:16:48,387 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 192 mSDsluCounter, 5301 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 6004 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:48,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 6004 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:16:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-06 22:16:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2023-11-06 22:16:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 331 states have (on average 1.229607250755287) internal successors, (407), 335 states have internal predecessors, (407), 203 states have call successors, (203), 33 states have call predecessors, (203), 36 states have return successors, (243), 203 states have call predecessors, (243), 201 states have call successors, (243) [2023-11-06 22:16:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 853 transitions. [2023-11-06 22:16:48,441 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 853 transitions. Word has length 359 [2023-11-06 22:16:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:48,442 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 853 transitions. [2023-11-06 22:16:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 7 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 7 states have call predecessors, (29), 6 states have call successors, (29) [2023-11-06 22:16:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 853 transitions. [2023-11-06 22:16:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-06 22:16:48,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:48,447 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:48,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:48,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:16:48,661 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:48,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1722234395, now seen corresponding path program 1 times [2023-11-06 22:16:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:48,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830643160] [2023-11-06 22:16:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:48,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:48,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480607597] [2023-11-06 22:16:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:48,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:48,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:48,786 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:48,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:16:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:49,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 4062 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:16:49,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2023-11-06 22:16:50,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:50,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830643160] [2023-11-06 22:16:50,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480607597] [2023-11-06 22:16:50,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480607597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:50,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:50,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:16:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435827555] [2023-11-06 22:16:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:50,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:50,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:50,087 INFO L87 Difference]: Start difference. First operand 572 states and 853 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:16:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:50,639 INFO L93 Difference]: Finished difference Result 1143 states and 1727 transitions. [2023-11-06 22:16:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:16:50,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 374 [2023-11-06 22:16:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:50,647 INFO L225 Difference]: With dead ends: 1143 [2023-11-06 22:16:50,647 INFO L226 Difference]: Without dead ends: 604 [2023-11-06 22:16:50,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:50,652 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 21 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:50,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3585 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:16:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-06 22:16:50,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 580. [2023-11-06 22:16:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 339 states have (on average 1.2300884955752212) internal successors, (417), 343 states have internal predecessors, (417), 203 states have call successors, (203), 33 states have call predecessors, (203), 36 states have return successors, (243), 203 states have call predecessors, (243), 201 states have call successors, (243) [2023-11-06 22:16:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 863 transitions. [2023-11-06 22:16:50,711 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 863 transitions. Word has length 374 [2023-11-06 22:16:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:50,712 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 863 transitions. [2023-11-06 22:16:50,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:16:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 863 transitions. [2023-11-06 22:16:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-06 22:16:50,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:50,716 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:50,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:50,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:16:50,938 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:50,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash -814755877, now seen corresponding path program 1 times [2023-11-06 22:16:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921925358] [2023-11-06 22:16:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:50,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:51,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760756949] [2023-11-06 22:16:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:51,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:51,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:51,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:51,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:16:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:52,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 3771 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:52,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-11-06 22:16:52,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:52,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921925358] [2023-11-06 22:16:52,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760756949] [2023-11-06 22:16:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760756949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:52,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:52,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:52,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696874489] [2023-11-06 22:16:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:52,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:52,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:52,145 INFO L87 Difference]: Start difference. First operand 580 states and 863 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:16:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:52,284 INFO L93 Difference]: Finished difference Result 1135 states and 1713 transitions. [2023-11-06 22:16:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:16:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 344 [2023-11-06 22:16:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:52,292 INFO L225 Difference]: With dead ends: 1135 [2023-11-06 22:16:52,292 INFO L226 Difference]: Without dead ends: 588 [2023-11-06 22:16:52,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:52,297 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 3 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:52,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2267 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-11-06 22:16:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2023-11-06 22:16:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 343 states have (on average 1.227405247813411) internal successors, (421), 347 states have internal predecessors, (421), 203 states have call successors, (203), 33 states have call predecessors, (203), 36 states have return successors, (243), 203 states have call predecessors, (243), 201 states have call successors, (243) [2023-11-06 22:16:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 867 transitions. [2023-11-06 22:16:52,354 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 867 transitions. Word has length 344 [2023-11-06 22:16:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:52,356 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 867 transitions. [2023-11-06 22:16:52,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:16:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 867 transitions. [2023-11-06 22:16:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-06 22:16:52,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:52,360 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:52,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:52,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:16:52,574 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:52,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 341786329, now seen corresponding path program 1 times [2023-11-06 22:16:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465569909] [2023-11-06 22:16:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:52,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:52,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803290257] [2023-11-06 22:16:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:52,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:52,686 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:52,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:16:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:53,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 3756 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:16:53,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 470 proven. 3 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-11-06 22:16:53,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 50 proven. 12 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2023-11-06 22:16:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465569909] [2023-11-06 22:16:54,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803290257] [2023-11-06 22:16:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803290257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:54,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:16:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-06 22:16:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825053014] [2023-11-06 22:16:54,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:16:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:16:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:16:54,399 INFO L87 Difference]: Start difference. First operand 584 states and 867 transitions. Second operand has 16 states, 14 states have (on average 9.642857142857142) internal successors, (135), 16 states have internal predecessors, (135), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-06 22:16:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:56,270 INFO L93 Difference]: Finished difference Result 1144 states and 1704 transitions. [2023-11-06 22:16:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:16:56,271 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.642857142857142) internal successors, (135), 16 states have internal predecessors, (135), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) Word has length 344 [2023-11-06 22:16:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:56,278 INFO L225 Difference]: With dead ends: 1144 [2023-11-06 22:16:56,278 INFO L226 Difference]: Without dead ends: 609 [2023-11-06 22:16:56,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 673 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:16:56,282 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1462 mSDsluCounter, 5541 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 6194 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:56,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 6194 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:16:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-06 22:16:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 603. [2023-11-06 22:16:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 361 states have (on average 1.2326869806094183) internal successors, (445), 364 states have internal predecessors, (445), 204 states have call successors, (204), 33 states have call predecessors, (204), 36 states have return successors, (244), 205 states have call predecessors, (244), 202 states have call successors, (244) [2023-11-06 22:16:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 893 transitions. [2023-11-06 22:16:56,341 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 893 transitions. Word has length 344 [2023-11-06 22:16:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:56,342 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 893 transitions. [2023-11-06 22:16:56,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.642857142857142) internal successors, (135), 16 states have internal predecessors, (135), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-06 22:16:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 893 transitions. [2023-11-06 22:16:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-06 22:16:56,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:56,346 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:56,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:56,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:16:56,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:56,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:56,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1536421015, now seen corresponding path program 1 times [2023-11-06 22:16:56,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:56,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129339809] [2023-11-06 22:16:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:56,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:56,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649412246] [2023-11-06 22:16:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:56,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:56,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:56,686 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:56,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:16:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:57,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:16:57,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2023-11-06 22:16:57,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:57,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129339809] [2023-11-06 22:16:57,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:16:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649412246] [2023-11-06 22:16:57,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649412246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:57,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:16:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045030417] [2023-11-06 22:16:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:57,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:57,918 INFO L87 Difference]: Start difference. First operand 603 states and 893 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-06 22:16:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:58,174 INFO L93 Difference]: Finished difference Result 1226 states and 1830 transitions. [2023-11-06 22:16:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:16:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 374 [2023-11-06 22:16:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:58,184 INFO L225 Difference]: With dead ends: 1226 [2023-11-06 22:16:58,184 INFO L226 Difference]: Without dead ends: 675 [2023-11-06 22:16:58,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:16:58,190 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 99 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:58,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 3851 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:16:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-06 22:16:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 609. [2023-11-06 22:16:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 364 states have (on average 1.2307692307692308) internal successors, (448), 367 states have internal predecessors, (448), 207 states have call successors, (207), 33 states have call predecessors, (207), 36 states have return successors, (248), 208 states have call predecessors, (248), 205 states have call successors, (248) [2023-11-06 22:16:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 903 transitions. [2023-11-06 22:16:58,254 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 903 transitions. Word has length 374 [2023-11-06 22:16:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:58,255 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 903 transitions. [2023-11-06 22:16:58,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-06 22:16:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 903 transitions. [2023-11-06 22:16:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-11-06 22:16:58,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:58,259 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:58,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:58,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:58,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -899296130, now seen corresponding path program 1 times [2023-11-06 22:16:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471442798] [2023-11-06 22:16:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:58,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:58,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:16:58,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195961249] [2023-11-06 22:16:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:58,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:58,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:58,674 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:58,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:16:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:59,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 3894 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:16:59,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-11-06 22:17:00,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471442798] [2023-11-06 22:17:00,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195961249] [2023-11-06 22:17:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195961249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:00,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:17:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724360117] [2023-11-06 22:17:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:00,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:17:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:17:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:17:00,081 INFO L87 Difference]: Start difference. First operand 609 states and 903 transitions. Second operand has 11 states, 10 states have (on average 11.5) internal successors, (115), 11 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-06 22:17:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:01,252 INFO L93 Difference]: Finished difference Result 1166 states and 1728 transitions. [2023-11-06 22:17:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:17:01,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 11 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 359 [2023-11-06 22:17:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:01,259 INFO L225 Difference]: With dead ends: 1166 [2023-11-06 22:17:01,259 INFO L226 Difference]: Without dead ends: 609 [2023-11-06 22:17:01,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:17:01,264 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 954 mSDsluCounter, 4880 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 5525 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:01,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 5525 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:17:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-06 22:17:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 587. [2023-11-06 22:17:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 344 states have (on average 1.2267441860465116) internal successors, (422), 347 states have internal predecessors, (422), 206 states have call successors, (206), 33 states have call predecessors, (206), 35 states have return successors, (238), 206 states have call predecessors, (238), 204 states have call successors, (238) [2023-11-06 22:17:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 866 transitions. [2023-11-06 22:17:01,320 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 866 transitions. Word has length 359 [2023-11-06 22:17:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:01,320 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 866 transitions. [2023-11-06 22:17:01,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 11 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-06 22:17:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 866 transitions. [2023-11-06 22:17:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-06 22:17:01,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:01,325 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:01,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:01,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-06 22:17:01,540 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:01,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1727505383, now seen corresponding path program 1 times [2023-11-06 22:17:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858092355] [2023-11-06 22:17:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:01,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135226730] [2023-11-06 22:17:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:01,678 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:01,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:17:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:02,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 4035 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:17:02,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2023-11-06 22:17:02,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858092355] [2023-11-06 22:17:02,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135226730] [2023-11-06 22:17:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135226730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:17:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843006482] [2023-11-06 22:17:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:02,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:17:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:17:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:17:03,001 INFO L87 Difference]: Start difference. First operand 587 states and 866 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-06 22:17:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:03,205 INFO L93 Difference]: Finished difference Result 1172 states and 1738 transitions. [2023-11-06 22:17:03,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:17:03,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 374 [2023-11-06 22:17:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:03,214 INFO L225 Difference]: With dead ends: 1172 [2023-11-06 22:17:03,214 INFO L226 Difference]: Without dead ends: 649 [2023-11-06 22:17:03,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:17:03,218 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 61 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:03,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 3915 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-11-06 22:17:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 593. [2023-11-06 22:17:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 347 states have (on average 1.2247838616714697) internal successors, (425), 350 states have internal predecessors, (425), 209 states have call successors, (209), 33 states have call predecessors, (209), 35 states have return successors, (241), 209 states have call predecessors, (241), 207 states have call successors, (241) [2023-11-06 22:17:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2023-11-06 22:17:03,276 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 374 [2023-11-06 22:17:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:03,277 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2023-11-06 22:17:03,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-06 22:17:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2023-11-06 22:17:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-06 22:17:03,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:03,281 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:03,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:03,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:17:03,496 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:03,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1835494487, now seen corresponding path program 1 times [2023-11-06 22:17:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412754515] [2023-11-06 22:17:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:03,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:03,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113122665] [2023-11-06 22:17:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:03,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:03,601 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:03,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:17:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:04,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:17:04,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-11-06 22:17:04,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412754515] [2023-11-06 22:17:04,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113122665] [2023-11-06 22:17:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113122665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:04,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:17:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293761456] [2023-11-06 22:17:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:04,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:17:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:17:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:04,953 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-06 22:17:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:05,376 INFO L93 Difference]: Finished difference Result 1149 states and 1697 transitions. [2023-11-06 22:17:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:17:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 374 [2023-11-06 22:17:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:05,383 INFO L225 Difference]: With dead ends: 1149 [2023-11-06 22:17:05,383 INFO L226 Difference]: Without dead ends: 594 [2023-11-06 22:17:05,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:17:05,388 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 10 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4177 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:05,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4177 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:17:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-06 22:17:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 591. [2023-11-06 22:17:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 345 states have (on average 1.2231884057971014) internal successors, (422), 349 states have internal predecessors, (422), 209 states have call successors, (209), 33 states have call predecessors, (209), 35 states have return successors, (240), 208 states have call predecessors, (240), 207 states have call successors, (240) [2023-11-06 22:17:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 871 transitions. [2023-11-06 22:17:05,489 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 871 transitions. Word has length 374 [2023-11-06 22:17:05,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:05,490 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 871 transitions. [2023-11-06 22:17:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-06 22:17:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 871 transitions. [2023-11-06 22:17:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-06 22:17:05,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:05,494 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:05,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:05,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:05,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash -228384921, now seen corresponding path program 1 times [2023-11-06 22:17:05,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:05,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699053705] [2023-11-06 22:17:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:05,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186928583] [2023-11-06 22:17:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:05,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:05,828 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:05,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:17:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:07,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:17:07,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-11-06 22:17:07,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699053705] [2023-11-06 22:17:07,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186928583] [2023-11-06 22:17:07,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186928583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:07,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:07,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:17:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959321180] [2023-11-06 22:17:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:17:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:17:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:17:07,131 INFO L87 Difference]: Start difference. First operand 591 states and 871 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-06 22:17:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:07,364 INFO L93 Difference]: Finished difference Result 1120 states and 1651 transitions. [2023-11-06 22:17:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:17:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) Word has length 385 [2023-11-06 22:17:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:07,371 INFO L225 Difference]: With dead ends: 1120 [2023-11-06 22:17:07,371 INFO L226 Difference]: Without dead ends: 585 [2023-11-06 22:17:07,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:17:07,375 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 109 mSDsluCounter, 5849 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6603 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:07,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 6603 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:17:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-06 22:17:07,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2023-11-06 22:17:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 342 states have (on average 1.2222222222222223) internal successors, (418), 346 states have internal predecessors, (418), 206 states have call successors, (206), 33 states have call predecessors, (206), 35 states have return successors, (237), 205 states have call predecessors, (237), 204 states have call successors, (237) [2023-11-06 22:17:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 861 transitions. [2023-11-06 22:17:07,433 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 861 transitions. Word has length 385 [2023-11-06 22:17:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:07,433 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 861 transitions. [2023-11-06 22:17:07,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-06 22:17:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 861 transitions. [2023-11-06 22:17:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-06 22:17:07,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:07,438 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:07,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:07,652 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:07,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1176051163, now seen corresponding path program 1 times [2023-11-06 22:17:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125688040] [2023-11-06 22:17:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:07,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:07,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302442320] [2023-11-06 22:17:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:07,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:07,767 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:17:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:09,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 4079 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:17:09,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:09,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:17:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2023-11-06 22:17:09,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:09,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125688040] [2023-11-06 22:17:09,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:09,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302442320] [2023-11-06 22:17:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302442320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:09,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:17:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723116522] [2023-11-06 22:17:09,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:09,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:17:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:09,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:17:09,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:17:09,569 INFO L87 Difference]: Start difference. First operand 585 states and 861 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-06 22:17:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:11,115 INFO L93 Difference]: Finished difference Result 1182 states and 1790 transitions. [2023-11-06 22:17:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:17:11,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 385 [2023-11-06 22:17:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:11,122 INFO L225 Difference]: With dead ends: 1182 [2023-11-06 22:17:11,123 INFO L226 Difference]: Without dead ends: 630 [2023-11-06 22:17:11,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:17:11,128 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 146 mSDsluCounter, 5294 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 6005 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:11,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 6005 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:17:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-06 22:17:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 596. [2023-11-06 22:17:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 352 states have (on average 1.2215909090909092) internal successors, (430), 355 states have internal predecessors, (430), 206 states have call successors, (206), 33 states have call predecessors, (206), 36 states have return successors, (272), 207 states have call predecessors, (272), 204 states have call successors, (272) [2023-11-06 22:17:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 908 transitions. [2023-11-06 22:17:11,199 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 908 transitions. Word has length 385 [2023-11-06 22:17:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:11,200 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 908 transitions. [2023-11-06 22:17:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-06 22:17:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 908 transitions. [2023-11-06 22:17:11,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-06 22:17:11,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:11,204 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:11,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:11,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:11,424 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:11,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -273554069, now seen corresponding path program 1 times [2023-11-06 22:17:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:11,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504001584] [2023-11-06 22:17:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:11,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834059382] [2023-11-06 22:17:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:11,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:11,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:11,528 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:11,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:17:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:12,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:17:12,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2023-11-06 22:17:12,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504001584] [2023-11-06 22:17:12,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834059382] [2023-11-06 22:17:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834059382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723305541] [2023-11-06 22:17:12,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:12,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:12,832 INFO L87 Difference]: Start difference. First operand 596 states and 908 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-06 22:17:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:12,928 INFO L93 Difference]: Finished difference Result 1159 states and 1839 transitions. [2023-11-06 22:17:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:12,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 385 [2023-11-06 22:17:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:12,936 INFO L225 Difference]: With dead ends: 1159 [2023-11-06 22:17:12,937 INFO L226 Difference]: Without dead ends: 596 [2023-11-06 22:17:12,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:12,944 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 7 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:12,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2269 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-11-06 22:17:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2023-11-06 22:17:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 352 states have (on average 1.21875) internal successors, (429), 355 states have internal predecessors, (429), 206 states have call successors, (206), 33 states have call predecessors, (206), 36 states have return successors, (272), 207 states have call predecessors, (272), 204 states have call successors, (272) [2023-11-06 22:17:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 907 transitions. [2023-11-06 22:17:13,040 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 907 transitions. Word has length 385 [2023-11-06 22:17:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:13,041 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 907 transitions. [2023-11-06 22:17:13,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-06 22:17:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 907 transitions. [2023-11-06 22:17:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-06 22:17:13,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:13,047 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:13,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-06 22:17:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:13,265 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:13,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1692486455, now seen corresponding path program 1 times [2023-11-06 22:17:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685062289] [2023-11-06 22:17:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:13,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17241164] [2023-11-06 22:17:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:13,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:13,419 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:13,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:17:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:14,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 4082 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:17:14,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-11-06 22:17:14,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685062289] [2023-11-06 22:17:14,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17241164] [2023-11-06 22:17:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17241164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:17:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408494779] [2023-11-06 22:17:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:14,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:14,905 INFO L87 Difference]: Start difference. First operand 596 states and 907 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-06 22:17:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:15,459 INFO L93 Difference]: Finished difference Result 1159 states and 1837 transitions. [2023-11-06 22:17:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:17:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 389 [2023-11-06 22:17:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:15,467 INFO L225 Difference]: With dead ends: 1159 [2023-11-06 22:17:15,467 INFO L226 Difference]: Without dead ends: 596 [2023-11-06 22:17:15,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:15,473 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 10 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:15,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2962 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:17:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-11-06 22:17:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2023-11-06 22:17:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 352 states have (on average 1.2159090909090908) internal successors, (428), 355 states have internal predecessors, (428), 206 states have call successors, (206), 33 states have call predecessors, (206), 36 states have return successors, (272), 207 states have call predecessors, (272), 204 states have call successors, (272) [2023-11-06 22:17:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 906 transitions. [2023-11-06 22:17:15,544 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 906 transitions. Word has length 389 [2023-11-06 22:17:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:15,545 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 906 transitions. [2023-11-06 22:17:15,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-06 22:17:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 906 transitions. [2023-11-06 22:17:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-06 22:17:15,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:15,550 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:15,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:17:15,765 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:15,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 296938731, now seen corresponding path program 1 times [2023-11-06 22:17:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31459079] [2023-11-06 22:17:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:15,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750834367] [2023-11-06 22:17:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:15,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:15,882 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:15,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:17:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:17,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 4088 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:17:17,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2023-11-06 22:17:17,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31459079] [2023-11-06 22:17:17,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750834367] [2023-11-06 22:17:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750834367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:17,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:17:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113823187] [2023-11-06 22:17:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:17,351 INFO L87 Difference]: Start difference. First operand 596 states and 906 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-06 22:17:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:17,446 INFO L93 Difference]: Finished difference Result 1175 states and 1805 transitions. [2023-11-06 22:17:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:17:17,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 385 [2023-11-06 22:17:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:17,451 INFO L225 Difference]: With dead ends: 1175 [2023-11-06 22:17:17,451 INFO L226 Difference]: Without dead ends: 612 [2023-11-06 22:17:17,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:17:17,454 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 6 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:17,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3032 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2023-11-06 22:17:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 604. [2023-11-06 22:17:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 360 states have (on average 1.211111111111111) internal successors, (436), 363 states have internal predecessors, (436), 206 states have call successors, (206), 33 states have call predecessors, (206), 36 states have return successors, (272), 207 states have call predecessors, (272), 204 states have call successors, (272) [2023-11-06 22:17:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 914 transitions. [2023-11-06 22:17:17,516 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 914 transitions. Word has length 385 [2023-11-06 22:17:17,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:17,516 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 914 transitions. [2023-11-06 22:17:17,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-06 22:17:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 914 transitions. [2023-11-06 22:17:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-11-06 22:17:17,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:17,521 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:17,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:17,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:17:17,745 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:17,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1541227465, now seen corresponding path program 1 times [2023-11-06 22:17:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672362026] [2023-11-06 22:17:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:17,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:17,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792697061] [2023-11-06 22:17:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:17,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:17,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:17,862 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:17,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84d987a0-b3a8-4d31-a5ef-1690af9db2cd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:17:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:19,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 4094 conjuncts, 286 conjunts are in the unsatisfiable core [2023-11-06 22:17:19,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:19,839 WARN L861 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-06 22:17:19,947 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:17:19,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2023-11-06 22:17:19,966 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:17:19,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2023-11-06 22:17:19,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:17:19,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:17:33,690 WARN L861 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-06 22:17:33,719 WARN L861 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-06 22:17:33,835 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (exists ((v_DerPreprocessor_1 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| v_DerPreprocessor_1)) (.cse2 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|)))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= 0 (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1)) (= |c_#memory_$Pointer$.offset| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (not (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|)) (= (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)) |c_#memory_$Pointer$.base|)))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store v_DerPreprocessor_1 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_DerPreprocessor_2) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (select (select (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_DerPreprocessor_1) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0))))) is different from true [2023-11-06 22:17:34,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:17:34,674 INFO L322 Elim1Store]: treesize reduction 30, result has 41.2 percent of original size [2023-11-06 22:17:34,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 58 [2023-11-06 22:17:34,715 INFO L322 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2023-11-06 22:17:34,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 35 [2023-11-06 22:17:34,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:17:34,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-11-06 22:17:34,847 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:17:34,849 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:17:35,359 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:17:35,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 22:17:35,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:17:36,780 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:17:36,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-11-06 22:17:36,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-06 22:17:36,815 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:17:36,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-11-06 22:17:36,823 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-06 22:17:37,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:17:37,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:17:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 592 proven. 72 refuted. 0 times theorem prover too weak. 333 trivial. 132 not checked. [2023-11-06 22:17:38,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672362026] [2023-11-06 22:17:40,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792697061] [2023-11-06 22:17:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792697061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:17:40,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:17:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2023-11-06 22:17:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970064492] [2023-11-06 22:17:40,196 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:40,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 22:17:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 22:17:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2747, Unknown=67, NotChecked=436, Total=3422 [2023-11-06 22:17:40,201 INFO L87 Difference]: Start difference. First operand 604 states and 914 transitions. Second operand has 46 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 19 states have call successors, (42), 6 states have call predecessors, (42), 14 states have return successors, (41), 18 states have call predecessors, (41), 19 states have call successors, (41) [2023-11-06 22:17:42,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:17:44,167 WARN L861 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.offset|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)) |c_#memory_$Pointer$.offset|)))) is different from true [2023-11-06 22:18:36,375 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (and (exists ((|v_ULTIMATE.start_aws_priority_queue_push_~queue#1.base_BEFORE_CALL_20| Int)) (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_push_~queue#1.base_BEFORE_CALL_20|) 40) 0)) (or (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| Int)) (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (.cse0 (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)))) (and (not (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) (= (store .cse0 |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) |c_#memory_$Pointer$.base|) (= (store .cse1 |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) |c_#memory_$Pointer$.offset|) (= (select (select .cse1 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_5 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|))) (= (select (select (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| v_DerPreprocessor_5) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= (select (select (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| v_DerPreprocessor_3) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) (= |c_aws_priority_queue_is_valid_#in~queue#1.base| |c_aws_priority_queue_is_valid_~queue#1.base|) (or (exists ((v_DerPreprocessor_1 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (let ((.cse3 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| v_DerPreprocessor_1)) (.cse4 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|)))) (and (= (select (select .cse3 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= 0 (select (select .cse4 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2)) (= |c_#memory_$Pointer$.offset| (store .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (not (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|)) (= (store .cse4 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)) |c_#memory_$Pointer$.base|)))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store v_DerPreprocessor_1 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_DerPreprocessor_2) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (select (select (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_DerPreprocessor_1) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) (= |c_aws_priority_queue_is_valid_#in~queue#1.offset| |c_aws_priority_queue_is_valid_~queue#1.offset|) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short871#1|))) is different from true [2023-11-06 22:18:40,876 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (and (or (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| Int)) (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (.cse0 (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)))) (and (not (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) (= (store .cse0 |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) |c_#memory_$Pointer$.base|) (= (store .cse1 |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) |c_#memory_$Pointer$.offset|) (= (select (select .cse1 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_5 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78|))) (= (select (select (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| v_DerPreprocessor_5) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= (select (select (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_78| v_DerPreprocessor_3) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) (or (exists ((v_DerPreprocessor_1 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| Int)) (let ((.cse3 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| v_DerPreprocessor_1)) (.cse4 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77| (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|)))) (and (= (select (select .cse3 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= 0 (select (select .cse4 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2)) (= |c_#memory_$Pointer$.offset| (store .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (not (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_77|)) (= (store .cse4 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|)) |c_#memory_$Pointer$.base|)))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store v_DerPreprocessor_1 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= (select (select (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_DerPreprocessor_2) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (select (select (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_DerPreprocessor_1) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))))) is different from true [2023-11-06 22:18:43,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:45,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:46,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:51,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:57,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:18:59,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:10,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:15,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:22,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:23,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:32,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:19:42,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]