./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:54:49,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:54:49,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:54:49,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:54:49,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:54:49,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:54:49,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:54:49,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:54:49,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:54:49,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:54:49,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:54:49,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:54:49,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:54:49,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:54:49,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:54:49,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:54:49,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:54:49,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:54:49,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:54:49,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:54:49,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:54:49,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:54:49,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:54:49,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:54:49,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:54:49,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:54:49,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:54:49,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:54:49,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:54:49,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:54:49,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:54:49,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:54:49,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:54:49,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:54:49,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:54:49,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:54:49,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:54:49,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:54:49,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:54:49,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:54:49,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:54:49,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:54:49,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:54:49,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:54:49,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:54:49,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:54:49,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:54:49,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:54:49,302 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:54:49,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:54:49,302 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:54:49,302 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:54:49,302 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:54:49,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:54:49,303 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:54:49,303 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:54:49,303 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:54:49,303 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:54:49,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:54:49,303 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:54:49,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:54:49,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:54:49,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:54:49,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:54:49,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:54:49,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:54:49,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:54:49,305 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:54:49,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:54:49,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:54:49,306 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:54:49,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:54:49,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:54:49,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:54:49,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2022-12-14 04:54:49,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:54:49,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:54:49,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:54:49,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:54:49,522 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:54:49,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2022-12-14 04:54:52,173 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:54:52,491 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:54:52,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2022-12-14 04:54:52,507 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/data/356568731/7041cdf166784a169688b527ce3d6504/FLAG399f1a519 [2022-12-14 04:54:52,518 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/data/356568731/7041cdf166784a169688b527ce3d6504 [2022-12-14 04:54:52,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:54:52,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:54:52,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:54:52,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:54:52,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:54:52,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:54:52" (1/1) ... [2022-12-14 04:54:52,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55faadbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:52, skipping insertion in model container [2022-12-14 04:54:52,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:54:52" (1/1) ... [2022-12-14 04:54:52,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:54:52,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:54:52,804 WARN L237 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_b1710a24-7277-4085-857c-30caac169c41/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2022-12-14 04:54:52,810 WARN L237 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_b1710a24-7277-4085-857c-30caac169c41/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2022-12-14 04:54:53,370 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:54:53,442 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,443 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,443 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,444 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,445 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,458 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,458 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,460 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,461 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,462 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,463 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,464 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,465 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,543 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:54:53,543 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:54:53,544 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:54:53,547 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:54:53,548 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:54:53,548 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:54:53,753 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:54:53,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:54:53,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:54:53,755 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:54:53,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:54:53,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:54:53,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:54:53,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:54:53,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:54:53,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:54:53,759 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:54:53,875 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,879 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,915 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:54:53,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:54:53,956 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:54:53,968 WARN L237 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_b1710a24-7277-4085-857c-30caac169c41/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2022-12-14 04:54:53,968 WARN L237 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_b1710a24-7277-4085-857c-30caac169c41/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2022-12-14 04:54:53,989 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:54:53,999 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:53,999 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,000 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,000 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,000 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,005 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,005 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,006 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,006 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,007 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,007 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,012 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:54:54,012 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:54:54,013 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:54:54,015 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:54:54,016 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:54:54,016 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:54:54,029 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:54:54,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:54:54,031 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:54:54,031 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:54:54,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:54:54,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:54:54,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:54:54,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:54:54,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:54:54,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:54:54,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:54:54,051 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,055 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:54:54,068 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:54:54,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:54:54,217 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:54:54,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54 WrapperNode [2022-12-14 04:54:54,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:54:54,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:54:54,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:54:54,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:54:54,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,329 INFO L138 Inliner]: procedures = 690, calls = 1714, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 680 [2022-12-14 04:54:54,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:54:54,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:54:54,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:54:54,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:54:54,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:54:54,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:54:54,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:54:54,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:54:54,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (1/1) ... [2022-12-14 04:54:54,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:54:54,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:54:54,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:54:54,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:54:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:54:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-12-14 04:54:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-12-14 04:54:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-14 04:54:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-14 04:54:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 04:54:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 04:54:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:54:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-14 04:54:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:54:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 04:54:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 04:54:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 04:54:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-14 04:54:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 04:54:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 04:54:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-14 04:54:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-12-14 04:54:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-12-14 04:54:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-12-14 04:54:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-12-14 04:54:54,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:54:54,680 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:54:54,682 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:54:55,834 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:54:55,907 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:54:55,907 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 04:54:55,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:54:55 BoogieIcfgContainer [2022-12-14 04:54:55,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:54:55,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:54:55,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:54:55,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:54:55,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:54:52" (1/3) ... [2022-12-14 04:54:55,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d67d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:54:55, skipping insertion in model container [2022-12-14 04:54:55,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:54:54" (2/3) ... [2022-12-14 04:54:55,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d67d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:54:55, skipping insertion in model container [2022-12-14 04:54:55,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:54:55" (3/3) ... [2022-12-14 04:54:55,916 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2022-12-14 04:54:55,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:54:55,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:54:55,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:54:55,972 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38800de9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:54:55,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:54:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 04:54:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 04:54:55,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:55,985 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 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] [2022-12-14 04:54:55,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:54:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1497047894, now seen corresponding path program 1 times [2022-12-14 04:54:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:55,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437940615] [2022-12-14 04:54:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-12-14 04:54:56,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:54:56,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437940615] [2022-12-14 04:54:56,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437940615] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:54:56,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515727802] [2022-12-14 04:54:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:56,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:56,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:54:56,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:54:56,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:54:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:57,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:54:57,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:54:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-12-14 04:54:57,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:54:57,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515727802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:54:57,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:54:57,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 04:54:57,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467030256] [2022-12-14 04:54:57,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:54:57,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:54:57,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:54:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:54:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:54:57,266 INFO L87 Difference]: Start difference. First operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:54:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:54:57,886 INFO L93 Difference]: Finished difference Result 270 states and 378 transitions. [2022-12-14 04:54:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:54:57,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 133 [2022-12-14 04:54:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:54:57,895 INFO L225 Difference]: With dead ends: 270 [2022-12-14 04:54:57,896 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 04:54:57,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 04:54:57,901 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 24 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:54:57,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 539 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:54:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 04:54:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-12-14 04:54:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-12-14 04:54:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2022-12-14 04:54:57,943 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 133 [2022-12-14 04:54:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:54:57,944 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2022-12-14 04:54:57,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:54:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2022-12-14 04:54:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-14 04:54:57,946 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:57,947 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 4, 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] [2022-12-14 04:54:57,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:54:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 04:54:58,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:54:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2128915979, now seen corresponding path program 1 times [2022-12-14 04:54:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:58,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301186794] [2022-12-14 04:54:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:58,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:54:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400724609] [2022-12-14 04:54:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:58,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:54:58,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:54:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:54:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:54:58,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:54:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-12-14 04:54:58,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:54:58,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:54:58,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301186794] [2022-12-14 04:54:58,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:54:58,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400724609] [2022-12-14 04:54:58,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400724609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:54:58,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:54:58,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 04:54:58,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496545793] [2022-12-14 04:54:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:54:58,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:54:58,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:54:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:54:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:54:58,715 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:54:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:54:59,079 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2022-12-14 04:54:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:54:59,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 142 [2022-12-14 04:54:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:54:59,081 INFO L225 Difference]: With dead ends: 236 [2022-12-14 04:54:59,081 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 04:54:59,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:54:59,082 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:54:59,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 536 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:54:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 04:54:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-12-14 04:54:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2022-12-14 04:54:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2022-12-14 04:54:59,094 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 142 [2022-12-14 04:54:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:54:59,094 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2022-12-14 04:54:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:54:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2022-12-14 04:54:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-14 04:54:59,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:59,096 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:54:59,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:54:59,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:59,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:54:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash 818529330, now seen corresponding path program 2 times [2022-12-14 04:54:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:59,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60039323] [2022-12-14 04:54:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:59,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:54:59,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361631398] [2022-12-14 04:54:59,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:54:59,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:59,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:54:59,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:54:59,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:55:01,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 04:55:01,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:55:01,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 04:55:01,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:55:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-12-14 04:55:01,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:55:01,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:55:01,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60039323] [2022-12-14 04:55:01,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:55:01,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361631398] [2022-12-14 04:55:01,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361631398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:55:01,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:55:01,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 04:55:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756004227] [2022-12-14 04:55:01,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:55:01,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 04:55:01,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:55:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 04:55:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:55:01,939 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:55:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:55:03,138 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2022-12-14 04:55:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:55:03,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 151 [2022-12-14 04:55:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:55:03,140 INFO L225 Difference]: With dead ends: 201 [2022-12-14 04:55:03,141 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 04:55:03,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:55:03,142 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:55:03,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 569 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 04:55:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 04:55:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-12-14 04:55:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (54), 51 states have call predecessors, (54), 51 states have call successors, (54) [2022-12-14 04:55:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2022-12-14 04:55:03,158 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 151 [2022-12-14 04:55:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:55:03,159 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2022-12-14 04:55:03,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 04:55:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2022-12-14 04:55:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 04:55:03,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:55:03,162 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:55:03,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:55:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:55:03,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:55:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:55:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1786252477, now seen corresponding path program 3 times [2022-12-14 04:55:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:55:03,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207630967] [2022-12-14 04:55:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:55:03,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:55:03,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:55:03,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135371652] [2022-12-14 04:55:03,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:55:03,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:55:03,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:55:03,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:55:03,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:55:03,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:55:03,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:55:03,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 04:55:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:55:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-12-14 04:55:03,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:55:03,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:55:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207630967] [2022-12-14 04:55:03,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:55:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135371652] [2022-12-14 04:55:03,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135371652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:55:03,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:55:03,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:55:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525043042] [2022-12-14 04:55:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:55:03,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 04:55:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:55:03,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 04:55:03,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 04:55:03,945 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-14 04:55:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:55:06,461 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2022-12-14 04:55:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:55:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 160 [2022-12-14 04:55:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:55:06,464 INFO L225 Difference]: With dead ends: 206 [2022-12-14 04:55:06,464 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 04:55:06,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:55:06,466 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 21 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:55:06,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 647 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 04:55:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 04:55:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-12-14 04:55:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-12-14 04:55:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2022-12-14 04:55:06,475 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 160 [2022-12-14 04:55:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:55:06,475 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2022-12-14 04:55:06,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-14 04:55:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2022-12-14 04:55:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-14 04:55:06,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:55:06,477 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-12-14 04:55:06,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:55:06,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:55:06,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:55:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:55:06,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1175613105, now seen corresponding path program 1 times [2022-12-14 04:55:06,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:55:06,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027263518] [2022-12-14 04:55:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:55:06,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:55:06,767 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:55:06,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616920138] [2022-12-14 04:55:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:55:06,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:55:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:55:06,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:55:06,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1710a24-7277-4085-857c-30caac169c41/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:55:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:55:42,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 566 conjunts are in the unsatisfiable core [2022-12-14 04:55:42,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:55:42,552 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 04:55:42,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 04:55:42,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 04:55:43,098 INFO L321 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2022-12-14 04:55:43,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 53 [2022-12-14 04:55:43,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 04:55:43,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 04:55:43,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 04:55:43,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 04:55:46,854 INFO L321 Elim1Store]: treesize reduction 304, result has 30.8 percent of original size [2022-12-14 04:55:46,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 203 treesize of output 350 [2022-12-14 04:55:46,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:46,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:46,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 190 [2022-12-14 04:55:46,989 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 04:55:46,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 132 treesize of output 165 [2022-12-14 04:55:47,105 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 04:55:47,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 159 [2022-12-14 04:55:56,156 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:55:56,340 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:55:56,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:55:56,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-14 04:55:56,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-14 04:55:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:57,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-14 04:55:57,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-14 04:55:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,036 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-12-14 04:55:58,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 80 [2022-12-14 04:55:58,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-12-14 04:55:58,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 04:55:58,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-12-14 04:55:58,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-14 04:55:58,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,592 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-12-14 04:55:58,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 80 [2022-12-14 04:55:58,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-12-14 04:55:58,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:58,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 04:55:59,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:59,223 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-14 04:55:59,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-14 04:55:59,245 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:55:59,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:59,588 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-14 04:55:59,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-14 04:55:59,614 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:55:59,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:59,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:59,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-14 04:56:00,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:00,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-14 04:56:00,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:00,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:56:00,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-14 04:56:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:01,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:01,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-14 04:56:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:01,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-14 04:56:02,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:02,137 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-14 04:56:02,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-14 04:56:02,156 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:56:02,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:02,407 INFO L321 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2022-12-14 04:56:02,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2022-12-14 04:56:02,416 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:56:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:02,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:56:02,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-12-14 04:56:15,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:15,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 04:56:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:15,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 04:56:16,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:16,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:16,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 04:56:19,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 04:56:24,507 INFO L321 Elim1Store]: treesize reduction 263, result has 28.3 percent of original size [2022-12-14 04:56:24,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 277 treesize of output 389 [2022-12-14 04:56:30,240 INFO L321 Elim1Store]: treesize reduction 261, result has 11.5 percent of original size [2022-12-14 04:56:30,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 75 treesize of output 55 [2022-12-14 04:56:30,823 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-12-14 04:56:30,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 24 [2022-12-14 04:56:31,550 INFO L321 Elim1Store]: treesize reduction 139, result has 3.5 percent of original size [2022-12-14 04:56:31,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 24 [2022-12-14 04:56:31,761 INFO L321 Elim1Store]: treesize reduction 139, result has 3.5 percent of original size [2022-12-14 04:56:31,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 24 [2022-12-14 04:56:32,050 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 04:56:32,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 7 [2022-12-14 04:56:34,574 INFO L321 Elim1Store]: treesize reduction 101, result has 24.1 percent of original size [2022-12-14 04:56:34,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 259 treesize of output 303 [2022-12-14 04:56:35,108 INFO L321 Elim1Store]: treesize reduction 47, result has 2.1 percent of original size [2022-12-14 04:56:35,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 11 [2022-12-14 04:56:36,117 INFO L321 Elim1Store]: treesize reduction 101, result has 24.1 percent of original size [2022-12-14 04:56:36,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 261 treesize of output 305 [2022-12-14 04:56:37,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:37,178 INFO L321 Elim1Store]: treesize reduction 86, result has 5.5 percent of original size [2022-12-14 04:56:37,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 23 [2022-12-14 04:56:39,882 INFO L321 Elim1Store]: treesize reduction 611, result has 25.6 percent of original size [2022-12-14 04:56:39,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 321 treesize of output 535