./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh --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 fafc38909a055846da1b41b1ae706143d92ef6bb742651c374b2236f4f92c5ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:37:52,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:37:52,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:37:52,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:37:52,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:37:52,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:37:52,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:37:52,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:37:52,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:37:52,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:37:52,344 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:37:52,345 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:37:52,346 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:37:52,346 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:37:52,347 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:37:52,347 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:37:52,348 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:37:52,348 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:37:52,349 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:37:52,349 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:37:52,350 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:37:52,352 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:37:52,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:37:52,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:37:52,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:37:52,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:37:52,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:37:52,356 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:37:52,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:37:52,356 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:37:52,357 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:37:52,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:37:52,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:37:52,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:37:52,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:37:52,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:37:52,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:37:52,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:37:52,359 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:37:52,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:37:52,359 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:37:52,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:37:52,360 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:37:52,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:37:52,360 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_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fafc38909a055846da1b41b1ae706143d92ef6bb742651c374b2236f4f92c5ee [2023-12-02 18:37:52,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:37:52,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:37:52,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:37:52,582 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:37:52,582 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:37:52,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i [2023-12-02 18:37:55,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:37:55,738 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:37:55,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i [2023-12-02 18:37:55,772 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/data/db61bbac1/3ec4e77f2e894f478ab9dda82d2bb1ee/FLAGcf76562c8 [2023-12-02 18:37:55,788 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/data/db61bbac1/3ec4e77f2e894f478ab9dda82d2bb1ee [2023-12-02 18:37:55,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:37:55,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:37:55,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:37:55,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:37:55,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:37:55,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:37:55" (1/1) ... [2023-12-02 18:37:55,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcd404b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:55, skipping insertion in model container [2023-12-02 18:37:55,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:37:55" (1/1) ... [2023-12-02 18:37:55,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:37:56,181 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_765b5b7f-23da-4ba4-beb0-003abba48f03/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4499,4512] [2023-12-02 18:37:56,191 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_765b5b7f-23da-4ba4-beb0-003abba48f03/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4559,4572] [2023-12-02 18:37:57,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,217 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,232 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,235 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,236 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:57,825 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:37:57,827 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:37:57,828 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:37:57,830 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:37:57,831 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:37:57,832 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:37:57,833 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:37:57,834 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:37:57,835 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:37:57,836 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:37:58,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,156 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,156 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,156 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,161 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,185 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,185 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,186 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,195 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:37:58,230 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:37:58,244 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_765b5b7f-23da-4ba4-beb0-003abba48f03/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4499,4512] [2023-12-02 18:37:58,245 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_765b5b7f-23da-4ba4-beb0-003abba48f03/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4559,4572] [2023-12-02 18:37:58,284 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,294 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,294 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,299 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,299 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,336 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:37:58,337 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:37:58,338 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:37:58,338 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:37:58,339 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:37:58,340 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:37:58,340 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:37:58,341 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:37:58,341 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:37:58,342 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:37:58,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,384 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,391 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-12-02 18:37:58,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,418 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,420 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,421 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,435 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:37:58,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:37:58,687 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,687 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,688 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,689 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,689 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,689 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,689 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:37:58,696 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:37:58,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58 WrapperNode [2023-12-02 18:37:58,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:37:58,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:37:58,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:37:58,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:37:58,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,865 INFO L138 Inliner]: procedures = 696, calls = 1939, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 1086 [2023-12-02 18:37:58,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:37:58,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:37:58,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:37:58,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:37:58,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:58,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:59,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:37:59,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:37:59,006 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:37:59,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:37:59,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (1/1) ... [2023-12-02 18:37:59,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:37:59,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:37:59,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:37:59,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:37:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-12-02 18:37:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-12-02 18:37:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-12-02 18:37:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-12-02 18:37:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:37:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-12-02 18:37:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-12-02 18:37:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-12-02 18:37:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-12-02 18:37:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 18:37:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 18:37:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-12-02 18:37:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-12-02 18:37:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 18:37:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:37:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 18:37:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 18:37:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:37:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:37:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-12-02 18:37:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-12-02 18:37:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:37:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:37:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:37:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-12-02 18:37:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-12-02 18:37:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-12-02 18:37:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-12-02 18:37:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:37:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:37:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 18:37:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 18:37:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-12-02 18:37:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-12-02 18:37:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-12-02 18:37:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-12-02 18:37:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 18:37:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-12-02 18:37:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-12-02 18:37:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-12-02 18:37:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-12-02 18:37:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-12-02 18:37:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-12-02 18:37:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 18:37:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 18:37:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:37:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:37:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-12-02 18:37:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-12-02 18:37:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-12-02 18:37:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-12-02 18:37:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:37:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:37:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:37:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-12-02 18:37:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-12-02 18:37:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 18:37:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 18:37:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-12-02 18:37:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-12-02 18:37:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:37:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-12-02 18:37:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-12-02 18:37:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-12-02 18:37:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-12-02 18:37:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 18:37:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 18:37:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:37:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-12-02 18:37:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-12-02 18:37:59,423 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:37:59,425 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:38:01,257 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:38:01,671 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:38:01,671 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-02 18:38:01,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:38:01 BoogieIcfgContainer [2023-12-02 18:38:01,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:38:01,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:38:01,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:38:01,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:38:01,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:37:55" (1/3) ... [2023-12-02 18:38:01,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569f1232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:38:01, skipping insertion in model container [2023-12-02 18:38:01,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:37:58" (2/3) ... [2023-12-02 18:38:01,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569f1232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:38:01, skipping insertion in model container [2023-12-02 18:38:01,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:38:01" (3/3) ... [2023-12-02 18:38:01,683 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness_negated.i [2023-12-02 18:38:01,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:38:01,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 18:38:01,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:38:01,792 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;@76097d3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:38:01,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 18:38:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 207 states have (on average 1.21256038647343) internal successors, (251), 212 states have internal predecessors, (251), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-02 18:38:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-02 18:38:01,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:01,825 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 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] [2023-12-02 18:38:01,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:01,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:01,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1144636180, now seen corresponding path program 1 times [2023-12-02 18:38:01,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:01,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821180564] [2023-12-02 18:38:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-02 18:38:03,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:03,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821180564] [2023-12-02 18:38:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821180564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:38:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710115050] [2023-12-02 18:38:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:03,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:03,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:03,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:38:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:03,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:38:03,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-02 18:38:03,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:38:03,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710115050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:03,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:38:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-12-02 18:38:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881924733] [2023-12-02 18:38:03,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:38:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:03,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:38:03,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:38:03,816 INFO L87 Difference]: Start difference. First operand has 404 states, 207 states have (on average 1.21256038647343) internal successors, (251), 212 states have internal predecessors, (251), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 18:38:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:04,924 INFO L93 Difference]: Finished difference Result 725 states and 1105 transitions. [2023-12-02 18:38:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:38:04,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 130 [2023-12-02 18:38:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:04,940 INFO L225 Difference]: With dead ends: 725 [2023-12-02 18:38:04,940 INFO L226 Difference]: Without dead ends: 401 [2023-12-02 18:38:04,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:38:04,951 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:04,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 532 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:38:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-02 18:38:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2023-12-02 18:38:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 206 states have (on average 1.1844660194174756) internal successors, (244), 209 states have internal predecessors, (244), 166 states have call successors, (166), 28 states have call predecessors, (166), 27 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-02 18:38:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 574 transitions. [2023-12-02 18:38:05,037 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 574 transitions. Word has length 130 [2023-12-02 18:38:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:38:05,039 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 574 transitions. [2023-12-02 18:38:05,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 18:38:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 574 transitions. [2023-12-02 18:38:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 18:38:05,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:05,044 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:38:05,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:38:05,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 18:38:05,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:05,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash 364337830, now seen corresponding path program 1 times [2023-12-02 18:38:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:05,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089663184] [2023-12-02 18:38:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-12-02 18:38:05,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089663184] [2023-12-02 18:38:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089663184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:38:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731185618] [2023-12-02 18:38:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:05,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:05,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:05,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:38:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:06,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:38:06,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-02 18:38:06,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:38:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731185618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:06,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:38:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-02 18:38:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892862988] [2023-12-02 18:38:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:38:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:38:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:38:06,755 INFO L87 Difference]: Start difference. First operand 401 states and 574 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-02 18:38:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:08,308 INFO L93 Difference]: Finished difference Result 760 states and 1105 transitions. [2023-12-02 18:38:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:38:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 142 [2023-12-02 18:38:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:08,316 INFO L225 Difference]: With dead ends: 760 [2023-12-02 18:38:08,316 INFO L226 Difference]: Without dead ends: 403 [2023-12-02 18:38:08,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:38:08,321 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 50 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:08,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1887 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 18:38:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-12-02 18:38:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2023-12-02 18:38:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 207 states have (on average 1.183574879227053) internal successors, (245), 211 states have internal predecessors, (245), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (177), 164 states have call predecessors, (177), 164 states have call successors, (177) [2023-12-02 18:38:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2023-12-02 18:38:08,367 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 142 [2023-12-02 18:38:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:38:08,367 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2023-12-02 18:38:08,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-02 18:38:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2023-12-02 18:38:08,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 18:38:08,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:08,371 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:38:08,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:38:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:08,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:08,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 49136358, now seen corresponding path program 1 times [2023-12-02 18:38:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:08,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862570852] [2023-12-02 18:38:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 18:38:09,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862570852] [2023-12-02 18:38:09,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862570852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:38:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132596933] [2023-12-02 18:38:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:09,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:09,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:09,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:09,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:38:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:10,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:38:10,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-02 18:38:10,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:38:10,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132596933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:10,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:38:10,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-02 18:38:10,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649109038] [2023-12-02 18:38:10,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:10,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:38:10,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:38:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-02 18:38:10,149 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2023-12-02 18:38:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:13,460 INFO L93 Difference]: Finished difference Result 775 states and 1164 transitions. [2023-12-02 18:38:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:38:13,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 150 [2023-12-02 18:38:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:13,467 INFO L225 Difference]: With dead ends: 775 [2023-12-02 18:38:13,468 INFO L226 Difference]: Without dead ends: 416 [2023-12-02 18:38:13,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:38:13,472 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 65 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:13,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2758 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 18:38:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-12-02 18:38:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 414. [2023-12-02 18:38:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2023-12-02 18:38:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 619 transitions. [2023-12-02 18:38:13,514 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 619 transitions. Word has length 150 [2023-12-02 18:38:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:38:13,515 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 619 transitions. [2023-12-02 18:38:13,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2023-12-02 18:38:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 619 transitions. [2023-12-02 18:38:13,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-02 18:38:13,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:13,519 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:38:13,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:38:13,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:13,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:13,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:13,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1727992895, now seen corresponding path program 1 times [2023-12-02 18:38:13,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:13,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524023103] [2023-12-02 18:38:13,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:13,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:38:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186060444] [2023-12-02 18:38:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:13,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:13,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:13,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:38:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:14,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:38:14,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-02 18:38:14,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:38:14,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524023103] [2023-12-02 18:38:14,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:38:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186060444] [2023-12-02 18:38:14,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186060444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:14,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:38:14,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:38:14,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579859216] [2023-12-02 18:38:14,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:14,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:38:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:14,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:38:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:38:14,606 INFO L87 Difference]: Start difference. First operand 414 states and 619 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-12-02 18:38:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:17,468 INFO L93 Difference]: Finished difference Result 790 states and 1211 transitions. [2023-12-02 18:38:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:38:17,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 159 [2023-12-02 18:38:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:17,476 INFO L225 Difference]: With dead ends: 790 [2023-12-02 18:38:17,476 INFO L226 Difference]: Without dead ends: 420 [2023-12-02 18:38:17,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:38:17,482 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 57 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:17,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2352 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 18:38:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-02 18:38:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 414. [2023-12-02 18:38:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2023-12-02 18:38:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 619 transitions. [2023-12-02 18:38:17,527 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 619 transitions. Word has length 159 [2023-12-02 18:38:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:38:17,528 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 619 transitions. [2023-12-02 18:38:17,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-12-02 18:38:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 619 transitions. [2023-12-02 18:38:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-02 18:38:17,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:17,532 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:38:17,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:38:17,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:17,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:17,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:17,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1425885511, now seen corresponding path program 1 times [2023-12-02 18:38:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581689485] [2023-12-02 18:38:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:17,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:38:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475077239] [2023-12-02 18:38:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:17,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:17,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:17,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:38:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:38:18,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:38:18,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-02 18:38:18,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:38:18,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:18,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581689485] [2023-12-02 18:38:18,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:38:18,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475077239] [2023-12-02 18:38:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475077239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:18,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:38:18,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:38:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164227818] [2023-12-02 18:38:18,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:18,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:38:18,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:38:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:38:18,889 INFO L87 Difference]: Start difference. First operand 414 states and 619 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2023-12-02 18:38:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:23,188 INFO L93 Difference]: Finished difference Result 792 states and 1203 transitions. [2023-12-02 18:38:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:38:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 167 [2023-12-02 18:38:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:23,194 INFO L225 Difference]: With dead ends: 792 [2023-12-02 18:38:23,194 INFO L226 Difference]: Without dead ends: 422 [2023-12-02 18:38:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:38:23,197 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 80 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:23,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3185 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 18:38:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-02 18:38:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2023-12-02 18:38:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2023-12-02 18:38:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 619 transitions. [2023-12-02 18:38:23,227 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 619 transitions. Word has length 167 [2023-12-02 18:38:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:38:23,228 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 619 transitions. [2023-12-02 18:38:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2023-12-02 18:38:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 619 transitions. [2023-12-02 18:38:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 18:38:23,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:23,231 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:38:23,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:38:23,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:23,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:23,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash -37359354, now seen corresponding path program 2 times [2023-12-02 18:38:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:23,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399630094] [2023-12-02 18:38:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:23,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:23,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:38:23,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723834907] [2023-12-02 18:38:23,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:38:23,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:23,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:23,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:23,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:38:24,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 18:38:24,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:38:24,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:38:24,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 18:38:24,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:38:24,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399630094] [2023-12-02 18:38:24,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:38:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723834907] [2023-12-02 18:38:24,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723834907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:38:24,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:38:24,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:38:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019319898] [2023-12-02 18:38:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:38:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:38:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:38:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:38:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:38:24,251 INFO L87 Difference]: Start difference. First operand 414 states and 619 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-02 18:38:26,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:38:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:38:27,760 INFO L93 Difference]: Finished difference Result 422 states and 627 transitions. [2023-12-02 18:38:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:38:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 176 [2023-12-02 18:38:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:38:27,765 INFO L225 Difference]: With dead ends: 422 [2023-12-02 18:38:27,765 INFO L226 Difference]: Without dead ends: 420 [2023-12-02 18:38:27,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:38:27,766 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 5 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:38:27,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2615 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 18:38:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-02 18:38:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2023-12-02 18:38:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 218 states have (on average 1.18348623853211) internal successors, (258), 222 states have internal predecessors, (258), 169 states have call successors, (169), 29 states have call predecessors, (169), 30 states have return successors, (197), 168 states have call predecessors, (197), 167 states have call successors, (197) [2023-12-02 18:38:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 624 transitions. [2023-12-02 18:38:27,792 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 624 transitions. Word has length 176 [2023-12-02 18:38:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:38:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 624 transitions. [2023-12-02 18:38:27,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2023-12-02 18:38:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 624 transitions. [2023-12-02 18:38:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-02 18:38:27,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:38:27,797 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:38:27,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:38:27,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:27,997 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:38:27,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:38:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1519149673, now seen corresponding path program 3 times [2023-12-02 18:38:27,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:38:27,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399078248] [2023-12-02 18:38:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:38:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:38:28,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:38:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522042633] [2023-12-02 18:38:28,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 18:38:28,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:38:28,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:38:28,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:38:28,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765b5b7f-23da-4ba4-beb0-003abba48f03/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:38:28,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 18:38:28,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:38:28,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 18:38:28,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-02 18:38:28,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:38:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-02 18:38:29,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:38:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399078248] [2023-12-02 18:38:29,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:38:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522042633] [2023-12-02 18:38:29,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522042633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:38:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1088067205] [2023-12-02 18:38:29,323 INFO L159 IcfgInterpreter]: Started Sifa with 103 locations of interest [2023-12-02 18:38:29,323 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:38:29,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:38:29,342 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:38:29,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:47:14,182 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 2303 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 18:47:19,620 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 2303 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 18:47:21,888 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 18:47:21,912 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 18:49:48,762 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_size_t with input of size 38 for LOIs [2023-12-02 18:49:48,767 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2277 for LOIs [2023-12-02 18:50:49,230 INFO L197 IcfgInterpreter]: Interpreting procedure aws_priority_queue_is_valid with input of size 92 for LOIs [2023-12-02 18:50:49,744 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 18:50:49,770 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 18:50:56,373 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 18:50:56,753 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 125 for LOIs [2023-12-02 18:50:57,718 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 175 for LOIs [2023-12-02 18:50:58,955 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 163 for LOIs [2023-12-02 18:50:59,060 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 217 for LOIs [2023-12-02 18:51:01,371 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 38 for LOIs [2023-12-02 18:51:01,377 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 248 for LOIs [2023-12-02 18:51:01,749 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 111 for LOIs [2023-12-02 18:51:02,122 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 112 for LOIs [2023-12-02 18:51:02,179 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:52:33,416 WARN L293 SmtUtils]: Spent 1.50m on a formula simplification. DAG size of input: 2147 DAG size of output: 2145 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)