./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe7c8437c4e8e4a9eba5347957f7f909106bcd2e8ac9c6d24986782964465428 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:54,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:55,033 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:11:55,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:55,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:55,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:55,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:55,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:55,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:55,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:55,112 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:55,112 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:55,113 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:55,114 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:11:55,114 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:55,115 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:55,115 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:11:55,116 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:11:55,116 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:55,117 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:11:55,117 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:11:55,118 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:11:55,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:55,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:11:55,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:55,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:55,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:11:55,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:55,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:11:55,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:11:55,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:55,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:55,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:55,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:55,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:55,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:55,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:11:55,125 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:11:55,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:11:55,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:11:55,126 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:55,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:55,127 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7c8437c4e8e4a9eba5347957f7f909106bcd2e8ac9c6d24986782964465428 [2023-11-12 00:11:55,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:55,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:55,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:55,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:55,515 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:55,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2023-11-12 00:11:58,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:59,326 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:59,327 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2023-11-12 00:11:59,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/data/bf6b81458/785a0439ede142dabca08d89e1458f7a/FLAGa9bee9a74 [2023-11-12 00:11:59,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/data/bf6b81458/785a0439ede142dabca08d89e1458f7a [2023-11-12 00:11:59,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:59,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:59,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:59,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:59,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:59,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:59" (1/1) ... [2023-11-12 00:11:59,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea2f020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:59, skipping insertion in model container [2023-11-12 00:11:59,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:59" (1/1) ... [2023-11-12 00:11:59,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:59,831 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2023-11-12 00:11:59,840 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_456f92fc-56a4-4f71-ad32-0f482fe86648/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2023-11-12 00:12:00,950 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,951 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,952 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,953 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,955 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,970 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,971 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,974 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,975 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,978 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,979 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,980 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:00,981 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,429 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:12:01,430 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:12:01,432 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:12:01,434 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:12:01,442 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:12:01,443 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:12:01,444 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:12:01,445 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:12:01,446 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:12:01,449 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:12:01,751 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,770 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,902 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,903 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,903 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,904 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,905 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,908 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,909 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,910 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,911 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,911 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,912 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,912 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,913 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,916 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,916 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,917 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,917 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,927 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,930 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,944 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,945 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,946 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:01,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:02,021 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:12:02,048 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_456f92fc-56a4-4f71-ad32-0f482fe86648/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2023-11-12 00:12:02,049 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_456f92fc-56a4-4f71-ad32-0f482fe86648/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2023-11-12 00:12:02,121 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,122 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,123 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,124 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,125 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,135 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,136 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,137 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,137 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,140 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,141 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,141 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,142 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,201 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:12:02,203 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:12:02,204 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:12:02,205 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:12:02,206 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:12:02,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:12:02,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:12:02,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:12:02,209 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:12:02,210 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:12:02,257 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,262 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-11-12 00:12:02,284 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,285 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,321 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,321 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,322 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,322 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,322 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,323 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,323 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,325 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,325 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,328 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,329 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,338 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,339 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,339 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:12:02,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:02,537 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,537 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,537 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,537 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,538 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,538 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,538 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,538 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,538 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,538 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,539 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,539 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,539 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,539 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,539 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:02,547 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:12:02,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02 WrapperNode [2023-11-12 00:12:02,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:02,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:02,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:12:02,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:12:02,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,775 INFO L138 Inliner]: procedures = 696, calls = 1919, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1036 [2023-11-12 00:12:02,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:02,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:12:02,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:12:02,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:12:02,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:12:02,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:12:02,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:12:02,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:12:02,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (1/1) ... [2023-11-12 00:12:02,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:02,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:02,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:12:02,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:12:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-12 00:12:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-12 00:12:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 00:12:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 00:12:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:12:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 00:12:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 00:12:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 00:12:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 00:12:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:12:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:12:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-12 00:12:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-12 00:12:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:12:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:12:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:12:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:12:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:12:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:12:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-12 00:12:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-12 00:12:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:12:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:12:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:12:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-12 00:12:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-12 00:12:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 00:12:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 00:12:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:12:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:12:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:12:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:12:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:12:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:12:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:12:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 00:12:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 00:12:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 00:12:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 00:12:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-12 00:12:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-12 00:12:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:12:03,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:12:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:12:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:12:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 00:12:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 00:12:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-12 00:12:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-12 00:12:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:12:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:12:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:12:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-12 00:12:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-12 00:12:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:12:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:12:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:12:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:12:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:12:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:12:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:12:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:12:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:12:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:12:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:12:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:12:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-12 00:12:03,028 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-12 00:12:03,470 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:12:03,473 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:12:05,773 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:12:06,168 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:12:06,168 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 00:12:06,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:06 BoogieIcfgContainer [2023-11-12 00:12:06,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:12:06,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:12:06,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:12:06,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:12:06,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:59" (1/3) ... [2023-11-12 00:12:06,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fb95ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:06, skipping insertion in model container [2023-11-12 00:12:06,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02" (2/3) ... [2023-11-12 00:12:06,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fb95ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:06, skipping insertion in model container [2023-11-12 00:12:06,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:06" (3/3) ... [2023-11-12 00:12:06,183 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness_negated.i [2023-11-12 00:12:06,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:12:06,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:12:06,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:06,285 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28961583, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:06,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:12:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 196 states have internal predecessors, (233), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-12 00:12:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 00:12:06,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:06,308 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:12:06,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:06,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -126328806, now seen corresponding path program 1 times [2023-11-12 00:12:06,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245505417] [2023-11-12 00:12:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-12 00:12:07,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245505417] [2023-11-12 00:12:07,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245505417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:12:07,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20258473] [2023-11-12 00:12:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:07,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:07,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:07,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:12:07,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:12:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:08,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:12:08,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:12:08,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:12:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20258473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:12:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-12 00:12:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024834402] [2023-11-12 00:12:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:12:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:12:08,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:12:08,702 INFO L87 Difference]: Start difference. First operand has 378 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 196 states have internal predecessors, (233), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 00:12:11,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:12,107 INFO L93 Difference]: Finished difference Result 727 states and 1117 transitions. [2023-11-12 00:12:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:12:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 101 [2023-11-12 00:12:12,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:12,129 INFO L225 Difference]: With dead ends: 727 [2023-11-12 00:12:12,129 INFO L226 Difference]: Without dead ends: 377 [2023-11-12 00:12:12,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:12:12,143 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 41 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:12,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1793 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-12 00:12:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-12 00:12:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-12 00:12:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 192 states have (on average 1.1927083333333333) internal successors, (229), 196 states have internal predecessors, (229), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2023-11-12 00:12:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 552 transitions. [2023-11-12 00:12:12,257 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 552 transitions. Word has length 101 [2023-11-12 00:12:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:12,258 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 552 transitions. [2023-11-12 00:12:12,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 00:12:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 552 transitions. [2023-11-12 00:12:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-12 00:12:12,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:12,266 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 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] [2023-11-12 00:12:12,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:12:12,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:12:12,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:12,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 754841576, now seen corresponding path program 1 times [2023-11-12 00:12:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111449943] [2023-11-12 00:12:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 00:12:13,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:13,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111449943] [2023-11-12 00:12:13,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111449943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:12:13,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927662673] [2023-11-12 00:12:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:13,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:13,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:13,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:12:13,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:12:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:14,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:12:14,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:12:14,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:12:14,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927662673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:14,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:12:14,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-12 00:12:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520894922] [2023-11-12 00:12:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:14,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:12:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:14,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:12:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:12:14,139 INFO L87 Difference]: Start difference. First operand 377 states and 552 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-12 00:12:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:18,012 INFO L93 Difference]: Finished difference Result 737 states and 1111 transitions. [2023-11-12 00:12:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:12:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2023-11-12 00:12:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:18,020 INFO L225 Difference]: With dead ends: 737 [2023-11-12 00:12:18,020 INFO L226 Difference]: Without dead ends: 390 [2023-11-12 00:12:18,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:12:18,026 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 60 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:18,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2585 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 00:12:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-12 00:12:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2023-11-12 00:12:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2023-11-12 00:12:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-12 00:12:18,091 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 109 [2023-11-12 00:12:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:18,092 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-12 00:12:18,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-12 00:12:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-12 00:12:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 00:12:18,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:18,098 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-12 00:12:18,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:12:18,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 00:12:18,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:18,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2015292012, now seen corresponding path program 1 times [2023-11-12 00:12:18,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:18,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994812469] [2023-11-12 00:12:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:18,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:12:18,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361669942] [2023-11-12 00:12:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:18,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:12:18,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:12:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:19,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:12:19,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:12:19,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:12:19,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994812469] [2023-11-12 00:12:19,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:12:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361669942] [2023-11-12 00:12:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361669942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:19,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:19,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:12:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214274712] [2023-11-12 00:12:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:19,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:12:19,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:12:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:12:19,418 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:12:22,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:23,990 INFO L93 Difference]: Finished difference Result 752 states and 1158 transitions. [2023-11-12 00:12:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:12:23,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 118 [2023-11-12 00:12:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:23,996 INFO L225 Difference]: With dead ends: 752 [2023-11-12 00:12:23,997 INFO L226 Difference]: Without dead ends: 394 [2023-11-12 00:12:24,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:12:24,001 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 48 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2226 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-12 00:12:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-12 00:12:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2023-11-12 00:12:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2023-11-12 00:12:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-12 00:12:24,048 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 118 [2023-11-12 00:12:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:24,048 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-12 00:12:24,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-12 00:12:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-12 00:12:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 00:12:24,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:24,052 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 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] [2023-11-12 00:12:24,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:12:24,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:24,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:24,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1598691692, now seen corresponding path program 1 times [2023-11-12 00:12:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43288461] [2023-11-12 00:12:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:24,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:12:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970141189] [2023-11-12 00:12:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:24,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:24,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:24,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:12:24,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:12:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:25,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:12:25,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 00:12:25,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:12:25,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43288461] [2023-11-12 00:12:25,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:12:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970141189] [2023-11-12 00:12:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970141189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:25,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:25,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:12:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588418508] [2023-11-12 00:12:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:25,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:12:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:12:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:12:25,364 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-12 00:12:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:29,913 INFO L93 Difference]: Finished difference Result 754 states and 1150 transitions. [2023-11-12 00:12:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:12:29,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2023-11-12 00:12:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:29,919 INFO L225 Difference]: With dead ends: 754 [2023-11-12 00:12:29,919 INFO L226 Difference]: Without dead ends: 396 [2023-11-12 00:12:29,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:12:29,923 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 71 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:29,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3001 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-12 00:12:29,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-12 00:12:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2023-11-12 00:12:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2023-11-12 00:12:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-12 00:12:29,963 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 126 [2023-11-12 00:12:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:29,964 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-12 00:12:29,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-12 00:12:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-12 00:12:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 00:12:29,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:29,967 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 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] [2023-11-12 00:12:29,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:12:30,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:30,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:30,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash 72540282, now seen corresponding path program 2 times [2023-11-12 00:12:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063056501] [2023-11-12 00:12:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:30,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:12:30,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295858112] [2023-11-12 00:12:30,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:12:30,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:30,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:30,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:12:30,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:12:31,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:12:31,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:12:31,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:12:31,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-12 00:12:31,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:12:31,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063056501] [2023-11-12 00:12:31,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:12:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295858112] [2023-11-12 00:12:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295858112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:31,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:31,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:12:31,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263649087] [2023-11-12 00:12:31,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:12:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:31,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:12:31,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:12:31,242 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-12 00:12:33,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:35,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:12:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:35,939 INFO L93 Difference]: Finished difference Result 396 states and 591 transitions. [2023-11-12 00:12:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:12:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-12 00:12:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:35,944 INFO L225 Difference]: With dead ends: 396 [2023-11-12 00:12:35,945 INFO L226 Difference]: Without dead ends: 394 [2023-11-12 00:12:35,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:12:35,946 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 5 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:35,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2440 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 00:12:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-12 00:12:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2023-11-12 00:12:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 203 states have (on average 1.1921182266009853) internal successors, (242), 207 states have internal predecessors, (242), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (187), 158 states have call predecessors, (187), 157 states have call successors, (187) [2023-11-12 00:12:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 588 transitions. [2023-11-12 00:12:35,979 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 588 transitions. Word has length 135 [2023-11-12 00:12:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:35,980 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 588 transitions. [2023-11-12 00:12:35,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-12 00:12:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 588 transitions. [2023-11-12 00:12:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 00:12:35,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:35,983 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:12:35,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:12:36,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:36,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:12:36,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash -448924618, now seen corresponding path program 3 times [2023-11-12 00:12:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174304412] [2023-11-12 00:12:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:36,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:12:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93314090] [2023-11-12 00:12:36,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:12:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:12:36,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:36,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:12:36,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f92fc-56a4-4f71-ad32-0f482fe86648/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:12:36,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:12:36,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:12:36,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-12 00:12:36,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:12:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 00:12:37,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:12:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-12 00:12:37,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174304412] [2023-11-12 00:12:37,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:12:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93314090] [2023-11-12 00:12:37,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93314090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:12:37,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989582387] [2023-11-12 00:12:37,818 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2023-11-12 00:12:37,819 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:12:37,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:12:37,829 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:12:37,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs