./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire --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 2270fe5cc07251a3e14220516eaebb03f8e5cd298a28c4582f3a498662459431 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:42,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:42,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:15:42,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:42,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:42,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:42,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:42,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:42,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:42,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:42,995 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:42,998 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:42,998 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:43,001 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:43,002 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:43,003 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:43,003 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:43,004 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:43,004 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:43,005 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:43,005 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:43,006 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:43,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:43,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:43,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:43,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:43,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:43,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:43,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:43,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:43,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:43,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:43,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:43,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:43,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:43,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:43,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:43,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:43,016 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:43,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:43,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:43,018 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:43,018 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:43,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:43,019 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_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2270fe5cc07251a3e14220516eaebb03f8e5cd298a28c4582f3a498662459431 [2023-11-23 21:15:43,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:43,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:43,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:43,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:43,363 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:43,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i [2023-11-23 21:15:47,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:47,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:47,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i [2023-11-23 21:15:47,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/data/d5c57fcc4/889e4da14c3548678b16911080e35a19/FLAG1905457e2 [2023-11-23 21:15:47,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/data/d5c57fcc4/889e4da14c3548678b16911080e35a19 [2023-11-23 21:15:47,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:47,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:47,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:47,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:47,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:47,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:47" (1/1) ... [2023-11-23 21:15:47,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7fb8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:47, skipping insertion in model container [2023-11-23 21:15:47,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:47" (1/1) ... [2023-11-23 21:15:47,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:48,395 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_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i[4497,4510] [2023-11-23 21:15:48,413 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_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i[4557,4570] [2023-11-23 21:15:49,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,725 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,733 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,735 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,736 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:49,737 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:15:50,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:15:50,315 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:15:50,317 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:15:50,319 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:15:50,320 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:15:50,322 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:15:50,323 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:15:50,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:15:50,325 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:15:50,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,758 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,764 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,764 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,765 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,770 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,770 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,771 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:50,864 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:50,884 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_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i[4497,4510] [2023-11-23 21:15:50,885 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_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness_negated.i[4557,4570] [2023-11-23 21:15:50,946 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,947 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,949 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,960 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,964 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:50,966 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,017 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:15:51,018 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:15:51,020 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:15:51,021 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:15:51,022 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:15:51,023 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:15:51,024 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:15:51,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:15:51,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:15:51,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:15:51,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-11-23 21:15:51,182 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,183 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,184 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,184 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,185 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,186 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,189 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,195 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,195 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,196 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:15:51,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:51,648 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,649 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,650 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,651 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,651 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,651 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,651 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,652 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,652 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,653 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,653 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,653 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,653 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,654 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,655 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:51,666 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:51,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51 WrapperNode [2023-11-23 21:15:51,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:51,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:51,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:51,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:51,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:51,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,004 INFO L138 Inliner]: procedures = 696, calls = 1897, calls flagged for inlining = 59, calls inlined = 19, statements flattened = 1188 [2023-11-23 21:15:52,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:52,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:52,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:52,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:52,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:52,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:52,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:52,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:52,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (1/1) ... [2023-11-23 21:15:52,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:52,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:52,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-23 21:15:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-23 21:15:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-11-23 21:15:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-11-23 21:15:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 21:15:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 21:15:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 21:15:52,332 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 21:15:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 21:15:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 21:15:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:15:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:15:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 21:15:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 21:15:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-23 21:15:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-23 21:15:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:15:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:15:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:15:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:15:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:52,337 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-23 21:15:52,337 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-23 21:15:52,337 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 21:15:52,337 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 21:15:52,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:52,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:52,338 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:15:52,338 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:15:52,338 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 21:15:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 21:15:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:15:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:15:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 21:15:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 21:15:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 21:15:52,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 21:15:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 21:15:52,347 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 21:15:52,347 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 21:15:52,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 21:15:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:15:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:15:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 21:15:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 21:15:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-23 21:15:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-23 21:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 21:15:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 21:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 21:15:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 21:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:15:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 21:15:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 21:15:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:15:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:15:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:15:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:15:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 21:15:52,360 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 21:15:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 21:15:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 21:15:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-23 21:15:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-23 21:15:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 21:15:52,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 21:15:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:15:52,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:15:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:52,930 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:52,934 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:55,033 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:55,585 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:55,585 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 21:15:55,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:55 BoogieIcfgContainer [2023-11-23 21:15:55,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:55,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:55,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:55,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:55,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:47" (1/3) ... [2023-11-23 21:15:55,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eff44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:55, skipping insertion in model container [2023-11-23 21:15:55,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:51" (2/3) ... [2023-11-23 21:15:55,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eff44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:55, skipping insertion in model container [2023-11-23 21:15:55,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:55" (3/3) ... [2023-11-23 21:15:55,604 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness_negated.i [2023-11-23 21:15:55,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:55,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:15:55,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:55,746 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;@51cd002a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:55,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:15:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 477 states, 240 states have (on average 1.1958333333333333) internal successors, (287), 243 states have internal predecessors, (287), 202 states have call successors, (202), 33 states have call predecessors, (202), 33 states have return successors, (202), 202 states have call predecessors, (202), 202 states have call successors, (202) [2023-11-23 21:15:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-23 21:15:55,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:55,776 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:55,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:55,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1480164043, now seen corresponding path program 1 times [2023-11-23 21:15:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:55,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316437208] [2023-11-23 21:15:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-23 21:15:57,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:57,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316437208] [2023-11-23 21:15:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316437208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110607235] [2023-11-23 21:15:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:57,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:57,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:57,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:57,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:57,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:57,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 21:15:58,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110607235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:58,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:58,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 21:15:58,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856272319] [2023-11-23 21:15:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:58,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:15:58,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:15:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:15:58,192 INFO L87 Difference]: Start difference. First operand has 477 states, 240 states have (on average 1.1958333333333333) internal successors, (287), 243 states have internal predecessors, (287), 202 states have call successors, (202), 33 states have call predecessors, (202), 33 states have return successors, (202), 202 states have call predecessors, (202), 202 states have call successors, (202) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 21:15:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:59,185 INFO L93 Difference]: Finished difference Result 913 states and 1391 transitions. [2023-11-23 21:15:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:15:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 149 [2023-11-23 21:15:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:59,210 INFO L225 Difference]: With dead ends: 913 [2023-11-23 21:15:59,210 INFO L226 Difference]: Without dead ends: 476 [2023-11-23 21:15:59,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:15:59,226 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 54 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:59,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2338 Invalid, 288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:15:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-23 21:15:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2023-11-23 21:15:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 242 states have internal predecessors, (283), 202 states have call successors, (202), 33 states have call predecessors, (202), 33 states have return successors, (210), 200 states have call predecessors, (210), 200 states have call successors, (210) [2023-11-23 21:15:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 695 transitions. [2023-11-23 21:15:59,360 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 695 transitions. Word has length 149 [2023-11-23 21:15:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:59,361 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 695 transitions. [2023-11-23 21:15:59,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 21:15:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 695 transitions. [2023-11-23 21:15:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-23 21:15:59,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:59,368 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 4, 4, 4, 3, 3, 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] [2023-11-23 21:15:59,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:59,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:15:59,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:59,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1898493626, now seen corresponding path program 1 times [2023-11-23 21:15:59,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:59,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654394286] [2023-11-23 21:15:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-23 21:16:00,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654394286] [2023-11-23 21:16:00,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654394286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230350270] [2023-11-23 21:16:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:00,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:00,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:00,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:00,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:16:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:01,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:16:01,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 21:16:01,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230350270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:01,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:16:01,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 21:16:01,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194224618] [2023-11-23 21:16:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:01,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:01,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:16:01,651 INFO L87 Difference]: Start difference. First operand 476 states and 695 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-23 21:16:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:03,066 INFO L93 Difference]: Finished difference Result 923 states and 1391 transitions. [2023-11-23 21:16:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:16:03,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 157 [2023-11-23 21:16:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:03,075 INFO L225 Difference]: With dead ends: 923 [2023-11-23 21:16:03,075 INFO L226 Difference]: Without dead ends: 489 [2023-11-23 21:16:03,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:16:03,080 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 69 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:03,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 3319 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:16:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-23 21:16:03,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2023-11-23 21:16:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 250 states have internal predecessors, (293), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (244), 203 states have call predecessors, (244), 202 states have call successors, (244) [2023-11-23 21:16:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 741 transitions. [2023-11-23 21:16:03,143 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 741 transitions. Word has length 157 [2023-11-23 21:16:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 741 transitions. [2023-11-23 21:16:03,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-23 21:16:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 741 transitions. [2023-11-23 21:16:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 21:16:03,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:03,148 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:03,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:03,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:16:03,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:03,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2088317841, now seen corresponding path program 1 times [2023-11-23 21:16:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:03,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399849395] [2023-11-23 21:16:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:03,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:03,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:03,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276660100] [2023-11-23 21:16:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:03,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:03,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:03,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:03,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:16:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:04,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:16:04,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 21:16:04,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:04,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399849395] [2023-11-23 21:16:04,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:16:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276660100] [2023-11-23 21:16:04,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276660100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:04,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:04,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:04,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970597730] [2023-11-23 21:16:04,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:04,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:16:04,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:04,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:16:04,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:16:04,532 INFO L87 Difference]: Start difference. First operand 487 states and 741 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-11-23 21:16:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:05,604 INFO L93 Difference]: Finished difference Result 938 states and 1450 transitions. [2023-11-23 21:16:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:16:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 166 [2023-11-23 21:16:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:05,612 INFO L225 Difference]: With dead ends: 938 [2023-11-23 21:16:05,613 INFO L226 Difference]: Without dead ends: 493 [2023-11-23 21:16:05,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:05,618 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 61 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:05,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2918 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:16:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-23 21:16:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 487. [2023-11-23 21:16:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 250 states have internal predecessors, (293), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (244), 203 states have call predecessors, (244), 202 states have call successors, (244) [2023-11-23 21:16:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 741 transitions. [2023-11-23 21:16:05,678 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 741 transitions. Word has length 166 [2023-11-23 21:16:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:05,679 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 741 transitions. [2023-11-23 21:16:05,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-11-23 21:16:05,680 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 741 transitions. [2023-11-23 21:16:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-23 21:16:05,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:05,684 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:05,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:05,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:05,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:05,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:05,914 INFO L85 PathProgramCache]: Analyzing trace with hash -167491889, now seen corresponding path program 1 times [2023-11-23 21:16:05,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:05,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955337560] [2023-11-23 21:16:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:06,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:06,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410205859] [2023-11-23 21:16:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:06,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:06,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:06,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:06,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:16:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:06,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:16:06,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-23 21:16:07,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:07,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955337560] [2023-11-23 21:16:07,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:16:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410205859] [2023-11-23 21:16:07,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410205859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:07,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:07,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:16:07,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238568739] [2023-11-23 21:16:07,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:07,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:16:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:16:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:07,109 INFO L87 Difference]: Start difference. First operand 487 states and 741 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) [2023-11-23 21:16:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:08,776 INFO L93 Difference]: Finished difference Result 940 states and 1445 transitions. [2023-11-23 21:16:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:08,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) Word has length 174 [2023-11-23 21:16:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:08,784 INFO L225 Difference]: With dead ends: 940 [2023-11-23 21:16:08,784 INFO L226 Difference]: Without dead ends: 495 [2023-11-23 21:16:08,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:16:08,790 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 84 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:08,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 3849 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:16:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-23 21:16:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 487. [2023-11-23 21:16:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 250 states have internal predecessors, (293), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (244), 203 states have call predecessors, (244), 202 states have call successors, (244) [2023-11-23 21:16:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 741 transitions. [2023-11-23 21:16:08,846 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 741 transitions. Word has length 174 [2023-11-23 21:16:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:08,847 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 741 transitions. [2023-11-23 21:16:08,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) [2023-11-23 21:16:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 741 transitions. [2023-11-23 21:16:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-23 21:16:08,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:08,852 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:08,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:09,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:09,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 858941104, now seen corresponding path program 2 times [2023-11-23 21:16:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585000915] [2023-11-23 21:16:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:09,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:09,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107901548] [2023-11-23 21:16:09,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:16:09,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:09,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:09,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:09,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:16:10,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:16:10,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:16:10,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:16:10,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-23 21:16:10,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:10,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585000915] [2023-11-23 21:16:10,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:16:10,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107901548] [2023-11-23 21:16:10,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107901548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:10,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247127598] [2023-11-23 21:16:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:10,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:16:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:16:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:16:10,178 INFO L87 Difference]: Start difference. First operand 487 states and 741 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-23 21:16:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:11,187 INFO L93 Difference]: Finished difference Result 495 states and 749 transitions. [2023-11-23 21:16:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:16:11,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) Word has length 183 [2023-11-23 21:16:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:11,199 INFO L225 Difference]: With dead ends: 495 [2023-11-23 21:16:11,200 INFO L226 Difference]: Without dead ends: 493 [2023-11-23 21:16:11,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:11,204 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 5 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:11,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3129 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:16:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-23 21:16:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 492. [2023-11-23 21:16:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 250 states have (on average 1.184) internal successors, (296), 253 states have internal predecessors, (296), 205 states have call successors, (205), 34 states have call predecessors, (205), 35 states have return successors, (245), 204 states have call predecessors, (245), 203 states have call successors, (245) [2023-11-23 21:16:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 746 transitions. [2023-11-23 21:16:11,277 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 746 transitions. Word has length 183 [2023-11-23 21:16:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:11,281 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 746 transitions. [2023-11-23 21:16:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-23 21:16:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 746 transitions. [2023-11-23 21:16:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-23 21:16:11,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:11,287 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:11,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:11,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:11,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:11,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:11,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1691662083, now seen corresponding path program 3 times [2023-11-23 21:16:11,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:11,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365148867] [2023-11-23 21:16:11,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:11,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:11,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187665794] [2023-11-23 21:16:11,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 21:16:11,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:11,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:11,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:11,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c2f1bc-75d5-47f5-abbd-776ba4bb46b6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:16:12,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 21:16:12,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:16:12,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:16:12,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-23 21:16:12,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 21:16:12,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365148867] [2023-11-23 21:16:12,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:16:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187665794] [2023-11-23 21:16:12,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187665794] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2099529735] [2023-11-23 21:16:12,836 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2023-11-23 21:16:12,837 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:16:12,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:16:12,847 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:16:12,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs