./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5 --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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:57:19,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:57:20,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:57:20,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:57:20,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:57:20,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:57:20,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:57:20,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:57:20,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:57:20,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:57:20,133 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:57:20,135 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:57:20,135 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:57:20,137 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:57:20,138 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:57:20,138 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:57:20,138 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:57:20,139 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:57:20,140 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:57:20,140 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:57:20,140 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:57:20,141 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:57:20,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:57:20,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:57:20,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:57:20,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:57:20,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:57:20,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:57:20,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:57:20,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:57:20,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:57:20,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:57:20,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:57:20,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:57:20,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:20,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:57:20,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:57:20,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:57:20,150 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:57:20,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:57:20,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:57:20,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:57:20,151 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:57:20,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:57:20,152 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_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2023-11-21 19:57:20,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:57:20,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:57:20,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:57:20,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:57:20,503 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:57:20,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-21 19:57:23,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:57:24,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:57:24,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-21 19:57:24,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/data/d5289c8f4/3f05bc3f91d44d8db69a2d3b04338918/FLAGd669bcef8 [2023-11-21 19:57:24,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/data/d5289c8f4/3f05bc3f91d44d8db69a2d3b04338918 [2023-11-21 19:57:24,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:57:24,578 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:57:24,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:24,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:57:24,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:57:24,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:24" (1/1) ... [2023-11-21 19:57:24,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dba4aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:24, skipping insertion in model container [2023-11-21 19:57:24,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:24" (1/1) ... [2023-11-21 19:57:24,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:57:25,081 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_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2023-11-21 19:57:25,090 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_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2023-11-21 19:57:26,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,079 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,096 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,097 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,099 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,102 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,537 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:57:26,539 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:57:26,540 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:57:26,542 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:57:26,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:57:26,544 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:57:26,545 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:57:26,546 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:57:26,547 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:57:26,547 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:57:26,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,860 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,871 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,871 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,876 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,887 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,888 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,888 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,910 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,910 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,911 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:26,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:26,976 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:57:27,006 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_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2023-11-21 19:57:27,010 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_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2023-11-21 19:57:27,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,079 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,084 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,147 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:57:27,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:57:27,153 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:57:27,154 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:57:27,155 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:57:27,156 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:57:27,157 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:57:27,158 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:57:27,159 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:57:27,159 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:57:27,234 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,252 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-21 19:57:27,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,299 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,304 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,308 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,322 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,325 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,423 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,423 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:57:27,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:27,613 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,613 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,613 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,613 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,613 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,614 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,614 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,614 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,614 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,614 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,649 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,655 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,655 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,655 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,656 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:27,662 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:57:27,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27 WrapperNode [2023-11-21 19:57:27,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:27,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:57:27,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:57:27,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:57:27,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:27,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:27,924 INFO L138 Inliner]: procedures = 696, calls = 1922, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1063 [2023-11-21 19:57:27,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:57:27,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:57:27,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:57:27,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:57:27,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:27,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:27,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:27,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:28,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:28,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:28,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:28,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:28,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:57:28,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:57:28,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:57:28,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:57:28,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (1/1) ... [2023-11-21 19:57:28,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:28,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:57:28,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:57:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-21 19:57:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-21 19:57:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-21 19:57:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-21 19:57:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:57:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-21 19:57:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-21 19:57:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-21 19:57:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-21 19:57:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 19:57:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 19:57:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-21 19:57:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-21 19:57:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:57:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:57:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 19:57:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 19:57:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:57:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:57:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-21 19:57:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-21 19:57:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:57:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:57:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:57:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-21 19:57:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-21 19:57:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-21 19:57:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-21 19:57:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:57:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:57:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 19:57:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 19:57:28,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 19:57:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 19:57:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:57:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 19:57:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 19:57:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-21 19:57:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-21 19:57:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-21 19:57:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-21 19:57:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 19:57:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 19:57:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:57:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:57:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-21 19:57:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-21 19:57:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-21 19:57:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-21 19:57:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:57:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:57:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:57:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-21 19:57:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-21 19:57:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 19:57:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 19:57:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 19:57:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 19:57:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:57:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-21 19:57:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-21 19:57:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-21 19:57:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-21 19:57:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:57:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:57:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:57:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-21 19:57:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-21 19:57:28,639 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:57:28,642 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:57:31,546 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:57:31,982 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:57:31,982 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 19:57:31,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:57:31 BoogieIcfgContainer [2023-11-21 19:57:31,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:57:31,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:57:31,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:57:31,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:57:31,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:57:24" (1/3) ... [2023-11-21 19:57:31,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7412e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:57:31, skipping insertion in model container [2023-11-21 19:57:31,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:27" (2/3) ... [2023-11-21 19:57:31,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7412e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:57:31, skipping insertion in model container [2023-11-21 19:57:31,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:57:31" (3/3) ... [2023-11-21 19:57:31,997 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2023-11-21 19:57:32,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:57:32,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 19:57:32,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:57:32,114 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;@3abaebc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:57:32,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 19:57:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 200 states have (on average 1.22) internal successors, (244), 205 states have internal predecessors, (244), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-21 19:57:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-21 19:57:32,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:32,153 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 19:57:32,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:32,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:32,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1565301479, now seen corresponding path program 1 times [2023-11-21 19:57:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053475663] [2023-11-21 19:57:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-21 19:57:33,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:33,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053475663] [2023-11-21 19:57:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053475663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:57:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155800372] [2023-11-21 19:57:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:33,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:33,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:33,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:33,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:57:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:34,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 19:57:34,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-21 19:57:34,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155800372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:34,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:57:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-21 19:57:34,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917981781] [2023-11-21 19:57:34,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:34,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:57:34,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:57:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:57:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:57:34,575 INFO L87 Difference]: Start difference. First operand has 390 states, 200 states have (on average 1.22) internal successors, (244), 205 states have internal predecessors, (244), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-21 19:57:35,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:57:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:36,021 INFO L93 Difference]: Finished difference Result 711 states and 1086 transitions. [2023-11-21 19:57:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:57:36,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2023-11-21 19:57:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:36,047 INFO L225 Difference]: With dead ends: 711 [2023-11-21 19:57:36,047 INFO L226 Difference]: Without dead ends: 387 [2023-11-21 19:57:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:57:36,068 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:36,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 514 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 19:57:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-21 19:57:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-11-21 19:57:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1909547738693467) internal successors, (237), 202 states have internal predecessors, (237), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-11-21 19:57:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 555 transitions. [2023-11-21 19:57:36,174 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 555 transitions. Word has length 106 [2023-11-21 19:57:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:36,176 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 555 transitions. [2023-11-21 19:57:36,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-21 19:57:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 555 transitions. [2023-11-21 19:57:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-21 19:57:36,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:36,181 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-21 19:57:36,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:36,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:36,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1141934124, now seen corresponding path program 1 times [2023-11-21 19:57:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:36,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967192940] [2023-11-21 19:57:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:36,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-21 19:57:37,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:37,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967192940] [2023-11-21 19:57:37,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967192940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:57:37,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505819659] [2023-11-21 19:57:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:37,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:37,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:37,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:57:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:37,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:57:37,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-21 19:57:38,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505819659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:38,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:57:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-21 19:57:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879763553] [2023-11-21 19:57:38,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:38,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:57:38,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:57:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:57:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:57:38,042 INFO L87 Difference]: Start difference. First operand 387 states and 555 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-21 19:57:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:39,181 INFO L93 Difference]: Finished difference Result 746 states and 1086 transitions. [2023-11-21 19:57:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:57:39,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 118 [2023-11-21 19:57:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:39,188 INFO L225 Difference]: With dead ends: 746 [2023-11-21 19:57:39,189 INFO L226 Difference]: Without dead ends: 389 [2023-11-21 19:57:39,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:57:39,192 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 50 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:39,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1845 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 19:57:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-21 19:57:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-11-21 19:57:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 200 states have (on average 1.19) internal successors, (238), 204 states have internal predecessors, (238), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2023-11-21 19:57:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 569 transitions. [2023-11-21 19:57:39,255 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 569 transitions. Word has length 118 [2023-11-21 19:57:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:39,256 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 569 transitions. [2023-11-21 19:57:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-21 19:57:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 569 transitions. [2023-11-21 19:57:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-21 19:57:39,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:39,276 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:57:39,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:39,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-21 19:57:39,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:39,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2121326928, now seen corresponding path program 1 times [2023-11-21 19:57:39,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784390788] [2023-11-21 19:57:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:39,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 19:57:40,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784390788] [2023-11-21 19:57:40,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784390788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:57:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321069105] [2023-11-21 19:57:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:40,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:40,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:40,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:40,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:57:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:41,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:57:41,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-21 19:57:41,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321069105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:41,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:57:41,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-21 19:57:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349312055] [2023-11-21 19:57:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:41,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:57:41,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:57:41,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:57:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:57:41,210 INFO L87 Difference]: Start difference. First operand 389 states and 569 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-21 19:57:43,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:43,164 INFO L93 Difference]: Finished difference Result 761 states and 1145 transitions. [2023-11-21 19:57:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:57:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 126 [2023-11-21 19:57:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:43,171 INFO L225 Difference]: With dead ends: 761 [2023-11-21 19:57:43,171 INFO L226 Difference]: Without dead ends: 402 [2023-11-21 19:57:43,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-21 19:57:43,175 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 65 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:43,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2692 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 19:57:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-21 19:57:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2023-11-21 19:57:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-21 19:57:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-21 19:57:43,221 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 126 [2023-11-21 19:57:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:43,222 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-21 19:57:43,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-21 19:57:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-21 19:57:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-21 19:57:43,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:43,225 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:57:43,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:43,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:43,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:43,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:43,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1326062887, now seen corresponding path program 1 times [2023-11-21 19:57:43,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:43,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285993339] [2023-11-21 19:57:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:43,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:57:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651031127] [2023-11-21 19:57:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:43,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:43,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:43,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:43,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:57:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:44,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:57:44,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-21 19:57:44,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:44,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285993339] [2023-11-21 19:57:44,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:57:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651031127] [2023-11-21 19:57:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651031127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:57:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539438216] [2023-11-21 19:57:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:57:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:57:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:57:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:57:44,459 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-21 19:57:46,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:57:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:47,300 INFO L93 Difference]: Finished difference Result 776 states and 1192 transitions. [2023-11-21 19:57:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:57:47,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 135 [2023-11-21 19:57:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:47,306 INFO L225 Difference]: With dead ends: 776 [2023-11-21 19:57:47,307 INFO L226 Difference]: Without dead ends: 406 [2023-11-21 19:57:47,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:57:47,311 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 57 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:47,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2298 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-21 19:57:47,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-21 19:57:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2023-11-21 19:57:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-21 19:57:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-21 19:57:47,350 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 135 [2023-11-21 19:57:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:47,351 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-21 19:57:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-21 19:57:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-21 19:57:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-21 19:57:47,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:47,354 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:57:47,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:47,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:47,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2012445960, now seen corresponding path program 1 times [2023-11-21 19:57:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670713044] [2023-11-21 19:57:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:47,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:57:47,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655664336] [2023-11-21 19:57:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:47,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:47,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:47,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:47,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:57:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:48,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 19:57:48,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-21 19:57:48,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:48,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:48,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670713044] [2023-11-21 19:57:48,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:57:48,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655664336] [2023-11-21 19:57:48,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655664336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:48,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 19:57:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574662636] [2023-11-21 19:57:48,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:48,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 19:57:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:57:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 19:57:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:57:48,662 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-21 19:57:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:50,962 INFO L93 Difference]: Finished difference Result 778 states and 1184 transitions. [2023-11-21 19:57:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:57:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 143 [2023-11-21 19:57:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:50,967 INFO L225 Difference]: With dead ends: 778 [2023-11-21 19:57:50,967 INFO L226 Difference]: Without dead ends: 408 [2023-11-21 19:57:50,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:57:50,972 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 80 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:50,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3107 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-21 19:57:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-21 19:57:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 400. [2023-11-21 19:57:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-21 19:57:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-21 19:57:51,015 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 143 [2023-11-21 19:57:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:51,015 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-21 19:57:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-21 19:57:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-21 19:57:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-21 19:57:51,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:51,023 INFO L195 NwaCegarLoop]: trace histogram [11, 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, 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] [2023-11-21 19:57:51,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:51,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:51,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1280011673, now seen corresponding path program 2 times [2023-11-21 19:57:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396383303] [2023-11-21 19:57:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:51,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:57:51,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367675817] [2023-11-21 19:57:51,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:57:51,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:51,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:51,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:51,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:57:52,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 19:57:52,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:57:52,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 19:57:52,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-21 19:57:52,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:52,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:52,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396383303] [2023-11-21 19:57:52,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:57:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367675817] [2023-11-21 19:57:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367675817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:52,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:52,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:57:52,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499011227] [2023-11-21 19:57:52,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:57:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:57:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:57:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:57:52,276 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-21 19:57:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:53,910 INFO L93 Difference]: Finished difference Result 731 states and 1128 transitions. [2023-11-21 19:57:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:57:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 152 [2023-11-21 19:57:53,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:53,916 INFO L225 Difference]: With dead ends: 731 [2023-11-21 19:57:53,916 INFO L226 Difference]: Without dead ends: 400 [2023-11-21 19:57:53,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:57:53,921 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 0 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:53,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1860 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 19:57:53,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-21 19:57:53,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2023-11-21 19:57:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (189), 161 states have call predecessors, (189), 160 states have call successors, (189) [2023-11-21 19:57:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 599 transitions. [2023-11-21 19:57:53,951 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 599 transitions. Word has length 152 [2023-11-21 19:57:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:53,952 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 599 transitions. [2023-11-21 19:57:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-21 19:57:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 599 transitions. [2023-11-21 19:57:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-21 19:57:53,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:53,955 INFO L195 NwaCegarLoop]: trace histogram [11, 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, 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] [2023-11-21 19:57:53,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:54,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 19:57:54,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:57:54,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1452579312, now seen corresponding path program 3 times [2023-11-21 19:57:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:57:54,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400376622] [2023-11-21 19:57:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:57:54,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:57:54,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040716819] [2023-11-21 19:57:54,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 19:57:54,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:57:54,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:54,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:57:54,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27680eb3-ed9e-47ec-aec0-a8a9b4facfc8/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:57:54,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 19:57:54,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:57:54,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-21 19:57:54,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-21 19:57:55,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:57:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-21 19:57:55,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:57:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400376622] [2023-11-21 19:57:55,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:57:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040716819] [2023-11-21 19:57:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040716819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:57:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798110678] [2023-11-21 19:57:55,611 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-11-21 19:57:55,612 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:57:55,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:57:55,621 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:57:55,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs